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(SiBE12

1. Precautions for Laying Refrigerant Piping Te ee Wal l place a cap e Cautions on pipe handling Rain TARET 1 Protect the open end of the pipe against dust and moisture O A AEA 2 All pipe bends should be as gentle as possible Use a pipe bender for with tape to keep bending dirt or water out e Selection of copper and heat insulation materials Finishing tape inter nitwiing When using commercial copper pipes and fittings observe the following Gas pipe Drain hose 1 Insulation material Polyethylene foam Heat transfer rate 0 041 to 0 052W mK 0 035 to 0 045kcal mh C Refrigerant gas pipe s surface temperature reaches 110 C max panni a Choose heat insulation materials that will withstand this temperature 2 Be sure to insulate both the gas and liquid piping and to provide insulation Humidifying dimensions as below Liquid pipe insulation Liquid pipe hose Gas side Gas pipe thermal insulation iquid pi Liquid side PR Liquid pipe 40 or 50class 50 class 40 class 50 class thermal insulation O D 9 5mm O D 12 7mm O D 6 4mm I D 12 15mm I D 8 10mm Minimum bend radius Thickness 13mm Min ThicKngSs 10mm Min 30mm or more 40mm or more 30mm or more Thickness 0 8mm C1220T O 3 Use separate thermal insulation pipes for gas and liquid refrigerant pipes e Flaring the pipe end 1 Cut the pipe end with a pipe cutter E Mi 2 Remove burrs with the cut surface facing right angles Remove burrs downward so that
2. Is the damper fault repeated OK Check intake air and humidification unit for direct sucking of moisture Is the wire connection YES of limit switch LS loosen gt Reconnect wires Is there any foreign material in the damper unit Remove the foreign material gt Replace the damper unit replacement of the limit switch only is impossible or replace the outdoor unit PCB R9444 Service Diagnosis 135 Troubleshooting SiBE12 908 2 25 Position Sensor Abnormality Remote Controller Display Outdoor Unit LED Display ve a Ad 5 Method of Startup failure of the compressor is identified by rom information of the compressor and by Malfunction electric component position detector Detection Malfunction m When the compressor does not run for 15 sec after receiving operation start command Decision m The machine shuts down if the fault occurs 16 times Conditions m Clear condition The compressor continuously runs for 10 min without fault Supposed m Detection error due to disconnection of compressor harness Causes m Startup failure due to defective compressor m Startup failure due to defective outdoor unit PCB m Startup failure due to closed stop valve m Input voltage fault 136 Service Diagnosis SiBE12 908 Troubleshooting Troubleshooting A Caution Check No 16 Refer to P 168 Check No 29 Refer to P 171 Check
3. When running in one room 5 During cooling operation frost may form on the gas stop valve or other parts This is normal 6 Operate the indoor units in accordance with the included operation manual Check that they operate normally 2 Items to check Check item Check Are the indoor units installed securely Has an inspection been made to check for gas leakage Consequences of trouble Falling vibration noise No cooling no heating Has complete thermal insulation been done gas pipes liquid pipes indoor portions of the drain hose extension Water leakage Is the drainage secure Water leakage Are the ground wire connections secure Danger in the event of a ground fault Are the electric wires connected correctly No cooling no heating Is the wiring in accordance with the specifications Operation failure burning Are the inlets outlets of the indoor and outdoor units free of any obstructions Are the stop valves open No cooling no heating Do the marks match room A room B on the wiring and piping for each indoor unit No cooling no heating Has the overall length of the humidifying hoses been set correctly Note 1 No humidification or loud operating sound Are the connections of the humidifying hoses correct Note 2 No humidification or unusual sound in the other room Note 1 Set the overall length of the humidifying
4. 56 Installation Operation Manual SiBE12 908 Installation Manual Trial Operation and Testing 1 Trial operation and testing 1 1 Measure the supply voltage and make sure that it falls in the specified range 1 2 Trial operation should be carried out in either cooling or heating mode e In cooling mode select the lowest programmable temperature in heating mode select the highest programmable temperature 1 Trial operation may be disabled in either mode depending on the room temperature Use the remote controller for trial operation as described below 2 After trial operation is complete set the temperature to a normal level 26 C to 28 C in cooling mode 20 C to 24 C in heating mode 3 For protection the system disables restart operation for 3 minutes after it is turned off 1 3 To perform a test run for HUMID HEAT operation activate test run mode from the remote controller following the instructions below and select the HUMID HEAT operation 1 4 Carry out the test operation in accordance with the operation manual to ensure that all functions and parts such as louver movement are working properly e The air conditioner requires a small amount of power in its standby mode If the system is not to be used for some time after installation shut off the circuit breaker to eliminate unnecessary power consumption e If the circuit breaker trips to shut off the power to the air conditioner the system wil
5. Human motion Human detection ON f i i l i signal OFF e M asi m This sensor detects human motion by receiving infrared rays and displays the pulse wave output m A microcomputer in an indoor unit carries out a sampling every 20 msec and if it detects 10 cycles of the wave in one second in total corresponding to 20msec x 10 200msec and when the ON signal continues 3 sec it judges human is in the room as the motion signal is ON m INTELLIGENT EYE sensor is divided into 2 areas and detects humans in each area E Image of 2 AREA INTELLIGENT EYE Wall oe Indoor unit Top view oa XN N N N N N 7 7 red 7 7 7 z re v AreaB it N ka Area A S N A microcomputer judges human existence in area A and B by the sensor signal from each R3854 16 Function and Control SiBE12 908 Main Functions 2 The motions in energy saving operation for example in cooling within 20 minutes 20 min f f 20 min a _ lt lt gt Human detection ON i 9 C ork L Pia signal OFF From area A or B RESET Cooling Set temp 2 C Heating Set temp 2 C PO Set temp 1 L INTELLIGENT EYE ON sj LED OFF Remote controller INTELLIGENT EYE on Lo button Ore _ l ON f Operation p OFF Fan speed 1 3 Set speed Set speed i Set speed 60 rpm i OFF R8350
6. s sessseesssssneesenrressrrrnserrrerrsrernsne 37 3 13 MalfyunctONS aii iiare itai aa ats iaai a 41 3 14 Forced Operation Mod cieswind ake khe ne saeeecdanwaaee aes 42 3 15 Additional Function 422 Asn esse eo e ead tenes hea ne ee cep apancdee ek aeeea cee aed as 43 Function and Control 1 Main Functions SiBE12 908 1 Main Functions 1 1 Frequency Principle Main Control Parameters Additional Control Parameters Inverter Principle The compressor is frequency controlled during normal operation The target frequency is set by the following 2 parameters coming from the operating indoor unit m The load condition of the operating indoor unit m The difference between the room temperature and the set temperature The target frequency is adapted by additional parameters in the following cases m Frequency restrictions m Initial settings m Forced cooling operation To regulate the capacity a frequency control is needed The inverter makes it possible to vary the rotation speed of the compressor The following table explains the conversion principle Phase Description 1 The supplied AC power source is converted into the DC power source for the present 2 The DC power source is reconverted into the three phase AC power source with variable frequency E When the frequency increases the rotation speed of the compressor increases resulting in an increased refrigerant circulation This leads to a hig
7. Continued from the previous page Check No 08 Refer to P 164 Does LED A turn off Check grounding NO Grounded Carry out grounding work The cause seems to be an Check No 08 YES a external factor other than failure of the outdoor unit Power supply waveform check PCB Investigate source of noise and take measures YES Disturbance Investigate the cause of disturbance and take remedial action Turn off the power supply Disconnect No 3 terminal and turn on the power supply again Does LED A flashing more than 10 times NO gt Replace outdoor unit PCB Check relay wire between indoor Check wrong wiring insulation unit and outdoor unit among wiring insulation to ground NO gt Reconnect relay wire YES gt Replace indoor unit PCB R9453 152 Service Diagnosis SiBE12 908 Troubleshooting 2 34 Signal Transmission Error on Outdoor Unit PCB Remote Controller Display Outdoor Unit LED Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes wn po Ad 5 Communication error between microcomputer mounted on the main body and inverter m When the data sent from the microcomputer of the inverter can not be received successively for 9 sec the machine shuts down m Fault counter is reset when the data from the microcomputer of the inverter can
8. Remove the fan motors or the four way valve coil and check a a Check No 29 Short circuit check NO YES gt Secure the required space Replace the wire to the specified one Replace the outdoor unit PCB gt Replace the fan motor or the four way valve coil A gt Conduct vacuum drying fill the refrigerant of specified volume R9432 108 Service Diagnosis SiBE12 908 Troubleshooting 2 5 Air conditioner makes big noise and vibration Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Piping length is too short Mounting wall is too thin Deformation of the unit Improper quantity of refrigerant Insufficient vibration prevention measures AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Installation YES Does the wall vibrate or Modify installation chatter Does the installation YES conditions reinforce the wall install outdoor rubber cushion Change installation place plate vibrate or chatter NO Put cushion material on the installation plate Is the piping secured and fixed Unit YES Does the fan contact gt Secure it by using saddles and inserting a cushion material Correct them with other parts Does the piping YES con
9. Malfunction Decision Conditions Supposed m Outdoor unit PCB is not power supplied Causes m Power supply failure due to noise Troubleshooting AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred NO Is correct power supplied 5 gt Turn on power supply For the machine with stand by Turn on breaker power save function first set the ON timer using remote Do not work on or touch controller to release the stand components other than by power save function specified part Doing so NO may cause a short circuit I Is LED A turned off Is LED 5 turned off Remove noises Is voltage of 5 V applied between 5V and GND Is voltage of 5 V applied between 5V and GND Replace outdoor unit PCB gt Replace outdoor unit PCB Restart Restart NO Dose the LED A blink Dose the LED 5 blink Replace outdoor unit PCB gt Remove noises from the power supply gt Replace outdoor unit PCB gt Remove noises from the power supply R9458 160 Service Diagnosis SiBE12 908 Check 3 Check 3 1 Fan Motor Connector Output Check Check No 01 1 Check connector connection 2 Check motor power supply voltage output pins 4 7 3 4 5 Check motor control voltag
10. Service Fela Le rel Inverter Multi System with Humidifying G Series Cautions on product corrosion 1 Air conditioners should not be installed in areas where corrosive gases such as acid gas or alkaline gas are produced 2 If the outdoor unit is to be installed close to the sea shore direct exposure to the sea breeze should be avoided If you need to install the outdoor unit close to the sea shore contact your local distributor S 5 BulApipiwny YUM Weayshs HINN 49 49AU enue 2211S About ISO 9001 sGANZATIoy About ISO 14001 ISO 9001 is a plant certification system N ISO d ISO 14001 is the standard defined by the defined by the International Organization for S 14001 A International Organization for Standardization Standardization ISO relating to quality a 3 ISO relating to environmental management assurance ISO 9001 certification covers 3 J amp Co 5 systems Our group has been acknowledged by an quality assurance aspects related to the G y S internationally accredited compliance organisation W design development manufacture be as having an appropriate programme of ISO 9001 ISO 9001 installation and supplementary service of Mayn sso environmental protection procedures and products manufactured at the plant EC99J2044 activities to meet the requirements of ISO 14001 JMI 0107 JQA 1452 Dealer DAIKIN INDUSTRIES LTD Head Office Umeda Center Bldg 2 4
11. r Use the provided joint to connect the humidifying hoses N Insert the joint into the humidifying hoses so that there will be no clearance between the hoses on the joint and secure the position of 10mm from the end of each hose with a binding band Binding a8 E Connecting KPMH996A15S 15m set e Use the KPMH996A15S 15m set only if the overall length of the humidifying hoses exceeds 10m 1 Be sure to connect one of the 2m hoses provided with a cuff each to the indoor unit and the other one to the outdoor unit Connect the 7 5m hose and 3 5m hose midway to adjust the overall length Reducing joint 2m 7 5m 3 5m 2m SF Wo TLYJ Indoor unit Reducing joint Outdoor unit i Connect the 2 2m hoses provided with a cuff each and the 7 5m H hose all together through the reducing joint if the overall length of o the humidifying hoses is 11 5m or less e Cut the 7 5m hose to adjust the overall length of the humidifying hoses sa dll 66 Installation Operation Manual SiBE12 908 Installation Manual 2 Connecting to outdoor unit There are 2 ways to connect humidifying hoses to the outdoor unit Connecting through the path under the humidifying hoses cover 1 Connect the humidifying hose 2m to the humidifying duct on the back of the outdoor un
12. Blank e 4 and R are disappears from the LCD NOTE m Note on POWERFUL operation e POWERFUL operation cannot be used together with ECONO QUIET or COMFORT operation Priority is given to the function of whichever button is pressed last e POWERFUL operation can only be set when the unit is running Pressing the operation stop button causes the settings to be canceled and the disappears from the LCD e POWERFUL operation will not increase the capacity of the air conditioner if the air conditioner is already in operation with its maximum capacity demonstrated e In COOL and HEAT mode To maximize the cooling heating effect the capacity of outdoor unit must be increased and the airflow rate be fixed to the maximum setting The temperature and airflow settings are not variable e In DRY mode The temperature setting is lowered by 2 5 C and the airflow rate is slightly increased e In AUTO mode The temperature can be changed only in powerful auto operation e In FAN mode The airflow rate is fixed to the maximum setting In HUMID HEAT mode The operation mode changes to HEAT mode m Note on OUTDOOR UNIT QUIET operation e This function is available in COOL HEAT and AUTO modes This is not available in FAN and DRY mode e POWERFUL operation and OUTDOOR UNIT QUIET operation cannot be used at the same time Priority is given to the function of whichever button is pressed last e OUTDOOR UNIT QUIET opera
13. L Warning Daikin Industries Ltd s products are manufactured for export to numerous countries throughout the DAIKIN world Daikin Industries Ltd does not have control over which products are exported to and used ina particular country Prior to purchase please therefore confirm with your local authorised importer distributor and or retailer whether this product conforms to the applicable standards and is suitable for use in the region where the product will be used This statement does not purport to exclude restrict or modify the application of any local legislation SiBE12 908 Preliminary Ask a qualified installer or contractor to install this product Do not try to install the product yourself Improper installation can result in water or refrigerant leakage electrical shock fire or explosion Use only those parts and accessories supplied or specified by Daikin Ask a qualified installer or contractor to install those parts and accessories Use of unauthorised parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage electrical shock fire or explosion Read the User s Manual carefully before using this product The User s Manual provides important safety instructions and warnings Be sure to follow these instructions and warnings If you have any enquiries please contact your local importer distributor and or retailer
14. Service Diagnosis 111 Troubleshooting SiBE12 908 Continued from the previous page Is the set temperature by remote controller too high High Explain to the user Is the outdoor temperature or humidity extremely low Not low Low Explain to the user gt Set the air outlet at the height of 1 8 m Confirm the humidification performance R9434 il Note Refer to P 28 for the priority room setting 112 Service Diagnosis SiBE12 908 Troubleshooting 2 7 Indoor Unit PCB Abnormality Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting il Note at gt lt Evaluation of zero cross detection of power supply by indoor unit When there is no zero cross detection in approximately 10 continuous seconds m Faulty indoor unit PCB m Faulty connector connection A Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred note Connector connection check YES gt Correct connections Connector Nos vary depending on models Model Type Connector No Wall Mounted Type Terminal strip Control PCB gt Replace PCBs R7130 Service Diagnosis 113 Troubleshooting SiBE12 908 2 8 Freeze up Protection Control or Hig
15. The rise in the room temperature from 15 C to 25 C will result in the fall in humidity from 40 RH to about 22 RH As humidifying operation starts concurrently with heating humidity rises gradually as shown in the figure below Some room conditions floor space ventilation frequency number of residents etc and temperature settings mostly higher settings may result in unsatisfactory humidity settings Humidity Fluctuation on HUMID HEAT Operation Humidity 100 90 lt HUMID HEAT start 80 When room temperature rises 70 a relative humidity is lowered even if the moisture 60 content is same Setting temp 50 17 20 40 23 NJ Humidity rises 30 gradually Heating 20 without humidifying setting temp 23 10 0 fl 1 fi 1 1 20 40 60 80 100 Time min Measurement Conditions Outdoor temp 7 HUMID HEAT operation setting Temp each setting as below Humidity CONT Continuous Airflow rate setting H tap Area of the room 26 4 m Humidifying hose length 4 0 m Ventilation 0 75 times hour 0 5 times of natural ventilation 0 25 times of humidity absorption by a carpet a curtain etc R9411 Function and Control Main Functions SiBE12 908 Time chart for humidifying operation control Approx 1min after HUMID HEAT operation start up it repeats humidifying and drying alternately to protect condensation for inside the
16. m Alternative repetition of vertical and horizontal swing motions enables uniform air conditioning of the entire room This function is effective for starting the air conditioner m When the horizontal swing and vertical swing are both set to auto mode the airflow become 3 D airflow and the horizontal swing and vertical swing motions are alternated The order of swing motion is such that it turns counterclockwise starting from the right upper point as viewed to the front side of the indoor unit i 7 do R1024 The vertical swing flap is controlled not to blow the air directly on the person in the room Heating Cooling ie 0 e pe o 80 R8413 R4302 Function and Control Main Functions SiBE12 908 1 6 Fan Speed Control for Indoor Units Control Mode Phase Steps il Note Automatic Airflow Control for Heating Automatic Airflow Control for Cooling il Note COMFORT AIRFLOW Mode The airflow rate can be automatically controlled depending on the difference between the set temperature and the room temperature This is done through phase control and Hall IC control For more information about Hall IC refer to the troubleshooting for fan motor on page 116 Phase control and fan speed control contains 9 steps LLL LL SL L ML M MH H and HH In automatic fan speed operation the step SL is not available Step Cooling Heating LLL L
17. 1 Use the flare nut fixed to the main unit To prevent cracking of the flare nut by aged deterioration 2 To prevent gas leakage apply refrigeration oil only to the inner surface of the flare Use refrigeration oil for R410A 3 Use torque wrenches when tightening the flare nuts to prevent damage to the flare nuts and gas leakage Align the centres of both flares and tighten the flare nuts 3 or 4 turns by hand Then tighten them fully with the torque wrenches Apply oil Apply refrigeration oil to Do not apply refrigeration oil to the outer surface the inner surface of the flare Flare nut Do not apply refrigeration oil to the flare nut avoid tightening with over torque Tighten Torque wrench Spanner Piping union Flare nut Flare nut tightening torque Valve cap tightening torque 14 2 17 2Nem Gas side Liquid side FI tfi A are nut Torg 144 175kgf cm 3 8 inch 1 2 inch 1 4 inch FI t for 69 5 32 7 39 9N m 21 6 27 4N m 48 1 59 7N m 21 6 27 4N m are nutara 333 407kgf cm 220 280kgf cm 490 610kgf cm 220 280kgf cm Flare nut for 12 7 49 5 60 9N sm Service port cap 10 8 14 7N m 505 61 5kgf cm tightening torque 110 150kgf cm Installation Operation Manual 61 Installation Manual SiBE12 908 Refrigerant Piping Work 4 Purging air and checking gas leakage A WARNING 1 Do not mix any substance
18. 128 x target discharge temperature 20 C If a gas shortage error takes place 4 times straight the system will be shut down The error counter will reset itself if this or any other error does not occur during the following 60 minute compressor running time total time Refrigerant shortage refrigerant leakage Refrigerant heat exchanger drift Poor compression performance of compressor Closed stop valve Defective electronic expansion valve Service Diagnosis 147 Troubleshooting SiBE12 908 Troubleshooting Check No 02 Refer to P 162 Check No 17 Refer to P 169 AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Is the stop valve opened YES NO gt Open the stop valve Check gas leakage connections Oil oozing at internal piping Check No 17 valve YES Does refrigerant heat exchange drift occur NO Oil oozing at relay pipe Check electronic expansion YES gt Repair flared portion of piping or replace square union YES Check the power transistor YES harness for looseness Correct it as required Replace cracked pipe if any NO Check the piping for improper contact Correct as required Replace cracked pipe if any Compressor vibrates too much Replace the electronic expansion valve YES gt Replace the heat
19. C or warmer Operation will start Connecting the Humidifying Hose Either one of the following sets optional accessories is required when connecting humidifying hoses Prepare the 10 or 15m set according to the conditions of the site lt Optional accessories gt KPMH996A10S 10m set Joint 625 Binding band Pumidifying hose Installation manual 8m With cuff 2m With cuff I D 25mm I D 25mm i O D 35mm O D 35mm l 1 2 1 1 1 KPMH996A15S 15m set Joint Reducing Binding band Humidifying hose Installation 930 joint 2m With cuff manual 030 425 I D 25mm mo om a0 35mm C 1 2 6 2 1 10 Installation Operation Manual 65 Installation Manual SiBE12 908 Connecting the Humidifying Hose Le Connecting to indoor unit Keep the following items in mind in order to prevent the degrading of humidification performance when connecting the humidifying hose to the indoor unit 1 Cut the excessive portions of the humidifying hoses Determine the overall length of the humidifying hoses according to the installation manual for the indoor unit 2 Be sure to avoid traps as much as possible when installing the humidifying hoses 3 Be careful not to crush the humidifying hoses in the case of bending the hoses at the time of installation Furthermore make sure th
20. Detail Conditions for Start Controlling Judge the controlling start with the indoor heat exchanger temperature after 2 min from operation start and A sec from changing number of operation room Control in Each Zone The maximum value of heat exchange intermediate temperature of each indoor unit controls the following excluding stopped rooms A When increase 30 When decrease 2 Reference Stop zone 65 C 55 C 54 C 52 C Drooping zone Keep zone Up zone Reset zone Heat exchanger thermistor temperature R9851 34 Function and Control SiBE12 908 Control Specification 3 9 Fan Control Outline Detail 3 10 Liquid Outline Detail Fan control is carried out according to the following conditions 1 Fan ON control for electric component cooling fan 2 Fan control when defrosting 3 Fan OFF delay when stopped 4 ON OFF control when cooling operation 5 Fan control when the number of heating rooms decreases 6 Fan control when forced operation 7 Fan control in indoor outdoor unit quiet operation 8 Fan control during heating operation 9 Fan control in the POWERFUL mode 10 Fan control for pressure difference upkeep Fan OFF Conirol when Stopped m Fan OFF delay for 60 seconds must be made when the compressor is stopped Tap Control in Indoor Outdoor Unit Quiet Operation 1 When Cooling Operation When the outdoor air temperature is higher than 3
21. E To start operation 1 Press COMFORT SENSOR button and select an operation mode e Choose the desired operation mode out of the following sequence Each time the COMFORT SENSOR button is pressed a different setting option is displayed on the LCD o y D gt gt gt When the flaps horizontal blades are swinging the operating as above will stop the movement of them E To cancel operation 2 Press COMFORT SENSOR button e Press the button to select Blank Display Operation mode Explanation zx The flaps will adjust the airflow direction upward while G COMFORT AIRFLOW cooling and adjust the airflow direction downward while lt heating page 16 The sensors will detect the movement of people in the sensing areas and the louvers will adjust the airflow INTELLIGENT EYE direction to an area where people are not present When E there are no people in the sensing areas the air conditioner will go into energy saving mode page 16 BP COMFORT AIRFLOW and operation combined with INTELLIGENT EYE operation INTELLIGENT EYE p p page 16 Blank No function m Notes on COMFORT AIRFLOW operation e The flap position will change preventing air from blowing directly on the occupants of the room e POWERFUL operation and COMFORT AIRFLOW operation cannot be used at the same time e The volume of air will be
22. e It cannot be used for the WEEKLY TIMER operation 18 CLOCK button 72 Installation Operation Manual SiBE12 908 Operation Manual 3 2 AUTO DRY COOL HEAT FAN Operation AUTO DRY COOL HEAT FAN Operation 1 MonE wm CE J DAIKIN POWERFUL COMFORT SWING Vita ae eE QUIET SENSOR WEEKLY _ J COPY BACK 4 NEXT SELECT OFF v ON CANCEL EDY FAN w OOO E HUM TEMP C ZA v 4 2 3 The air conditioner operates with the operation mode of your choice From the next time on the air conditioner will operate with the same operation mode E To start operation 1 Press MODE selector button and select a operation mode e Each pressing of the button advances the mode setting in sequence fA tA AUTO DRY HEAT 2 Press ON OFF button K is displayed on the LCD The OPERATION lamp lights up MULTI Operation mode Multi monitor lamp ENUAN AUTO Blue Red TTVANT DRY Green D0 COOL Blue or HEAT Red FAN White HUMID HEAT Orange Yellow page 12 Lit white for 2 seconds After that return to the color of selected operation mode or change to yellow ina standby state page 14 FRESH AIR SUPPLY VENTILATION E To st
23. exchanger Replace with the specified quantity of refrigerant Is insufficient gas fault repeated YES Check No 02 Thermistor check Replace the defective thermistor room temperature outdoor air indoor or outdoor heat exchanger thermistor Replace the outdoor unit PCB Is insufficient gas fault repeated Replace the compressor gt Procedure complete Procedure complete R9450 148 Service Diagnosis SiBE12 908 Troubleshooting 2 32 Over Voltage Protection Low Voltage Protection Remote Controller Display Outdoor Unit LED Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting I U Ax 59 Detect an abnormal increase or drop of voltage by the detection circuit or DC voltage detection circuit When an overcurrent signal is sent to the microcomputer from the overcurrent detection circuit or the voltage detected by DC voltage detection circuit is less than 150 V and that voltage continues for about 0 1 sec The machine shuts down if the fault conditions occurs 255 times Fault counter is reset when the machine continuously runs for 60 min without fault Abnormal supply voltage momentary power failure Defective overcurrent detector or defective DC voltage detection circuit Failure in PAM controlled parts Short circuit inside the fan motor windin
24. kept in the mounting plate pocket R d pi Y Removed pipe port cover z a Mounting plate 2 Boring a wall hole and installing wall embedded pipe e For walls containing metal frame or metal board be sure to use a wall embedded pipe and wall cover in the feed through hole to prevent possible heat electrical shock or fire alemaade pipe lt Outside e Be sure to caulk the gaps around the pipes with caulking material to prevent field supply f Siaey water leakage H A 1 Bore a feed through hole of 70mm in the wall so it has a down slope toward T N all hole cover ees j the outside field supply ea 670 eee 2 Insert a wall pipe into the hole 3 Insert a wall cover into wall pipe 4 After completing refrigerant piping wiring and drain piping caulk pipe hole gap with putty YW Wall embedded pipe field supply y Installation Operation Manual 51 Installation Manual SiBE12 908 Indoor Unit Installation 3 Inter unit wiring 1 Open the front panel then remove the service lid 2 Pass the inter unit wiring from the outdoor unit through the Hang indoor unit s hook hare feed through wall hole and then through the back of the indoor ZT unit Pull them through the front side Bend the ends of tie aa f wires upward for easier work in advance If the inter unit wiring ends are to be stripped first bundle wire ends with ae n When stripping the adhesiv
25. power supply again after turning it off If there are EVs which do not sound clatter disconnect the connectors of these EVs and check them for conductivity Harness 6 wires 6 pin connector 123456 5 2 Check 574 6 1 6 3 R6028 If there is no clatter latching sound on all of the EVs in step 2 the outdoor PCB is defective For EVs for which conductivity is established in step 3 connect the coil which sounded clatter to the EV main body which did not sound and make sure the latching sound be heard again If latching sound is heard outdoor unit PCB is defective If there is no latching sound the EV main body is defective il Note Latching sound varies by each valve Service Diagnosis 169 Check SiBE12 908 3 12 Rotating Pulse Input on Outdoor Unit PCB Check Check No 23 lt For propeller fan motor or humidification fan gt Make sure voltage of 270 30 V is applied Set power ON and operation OFF Remove connector S70 or S72 Check that the voltage between No 4 pin and No 7 pin is 270 VDC Check that the control voltage between No 3 pin and No 4 pin is 15 VDC Check that the RPM command voltage between No 2 pin and No 4 pin is 5 VDC Set power OFF and operation OFF Connect connector S70 or S72 Check whether two pulses 0 15 V are input at No 1 pin and No 4 pin when the fan motor is rotated 1 turn by hand OakhwWNnN gt Fuses are commonly used as follows Refer
26. 12 Nakazaki Nishi Kita ku Osaka 530 8323 Japan Tokyo Office Applied Models JR Shinagawa East Bldg 2 18 1 Konan r Minato ku Tokyo 108 0075 Japan Inverter Multi Heat Pump http www daikin com global_ac All rights reserved Ds ot e Specifications designs and other content appearing in this brochure are current as of January 2009 but subject to change without notice SiBE12 908 Printed in Japan 01 2009 B AK 806 clLAa sS SiBE12 908 Inverter Multi System with Humidifying G Series Heat Pump Indoor Unit CTXU25G2V1B CTXU35G2V1B CTXU42G2V1B CTXU50G2V1B Outdoor Unit 2MXU40GV1B 2MXU50GV1B Table of Contents SiBE12 908 Table of Contents SiBE12 908 Part 4 Function and Control Te Main WCU OLS o ren aaaea eae nE screen yeasuseeumamaenes 2 Ll Frequency Principles oiei eiieeii e 2 1 2 Thermostat Control sssssssseeneeeeneeesenrrssrrrrerrnntettrnrssttrnseetnnn teagdageol ahege 4 1 3 Automatic Operation eenean EEE E 5 1 4 Programme Dry Function sie oieeticcetec a caitedele oes eget 6 1 5 Airflow Direction COntOl ss sic8 sacicee ie ek tebs este sates ccenee ss edigeauevie ersten adeaie 7 1 6 Fan Speed Control for Indoor Units cccceeeeeeeeeeeeeeeeeeeenneeeeeeeeeeeeeee 8 1 7 HUMID HEAT OperanOitcwacicsicsc cic atecane ence ain vereetseatancttciel taawaenie 9 1 8 Fresh Air Supply Ventilation siccccs este tice 14 19 2 AREAINT
27. 24 C or more X 2 5 C Y 0 5 C zone B Room temperature at continues for 10 min 23 5 C startup X 0 5 C or 2 X 2 0 C Y 0 5 C zone B 18 C continues for 10 min o a PA l X 0 5 oe 17 5 C 18 C X 2 0 C Y 0 5 C zone B Zone C Thermostat ON Zone A Thermostat OFF 0 5 C continues for 10 min R6841 Function and Control SiBE12 908 Main Functions 1 5 Airflow Direction Control Power Airflow Dual Flaps Wide Angle Louvres Auto Swing 3 D Airflow COMFORT AIRFLOW The large flaps send a large volume of air downwards to the floor The flap provides an optimum control area in cooling heating and dry mode Heating Mode During heating mode the large flap enables direct warm air straight downwards The flap presses the warm air above the floor to reach the entire room Cooling Dry Mode During cooling or dry mode the flap retracts into the indoor unit Then cool air can be blown far and pervaded all over the room The louvres made of elastic synthetic resin provide a wide range of airflow that guarantees a comfortable air distribution The following table explains the auto swing process for heating cooling dry and fan Vertical Swing up and down Horizontal Swing A right and left Cooling Dry Heating Fan automatic p J 5 15 fy 30 I A A Z i E ar 50 55 65 R8315 9 R8317 R8318
28. Breakage of harness between PCBs AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Power on again NO Dose the LED A gt Replace the outdoor unit blink PCB Check to see that the machine is grounded NO Grounded Carry out grounding work YES Is harness in good order Zero cross signal is fault Replace the outdoor unit PCB gt Replace harness R9437 Service Diagnosis 125 Troubleshooting SiBE12 908 2 17 OL Activation Compressor Overload Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Check No 02 Refer to P 162 Check No 12 Refer to P 165 Check No 17 Refer to P 169 Check No 31 Refer to P 172 A compressor overload is detected through compressor OL m f the compressor OL is activated twice the system will be shut down m The error counter will reset itself if this or any other error does not occur during the following 60 minute compressor running time total time The operating temperature condition is not specified Refrigerant shortage Four way valve malfunctioning Outdoor unit PCB defective Water mixed in the local piping Electronic expansion valve defective Stop valve defective AN Be sure to turn off power switch before connect or disconnect connec
29. Breakage of relay harness or loose connector m Detection fault of fan speed due to defective outdoor unit PCB Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred A Caution Is humidification NO fan harness S72 connected gt Reconnect properly YES Rotate fan by hand after removing it l Does it rotate smoothly NO gt Replace hymidifying fan assembly YES lt Humidification fan gt Is fuse for power supply of fan FU2 blown After assembling run the fan YES Replace outdoor fan humidification fan outdoor unit PCB Does it rotate NO gt Replace outdoor unit PCB YES Y Stop lt Others gt gt Procedure complete lt Humidification fan gt Run the humidifying operation y Check No 23 Check for the rotation pulse input of outdoor unit PCB R9455 Service Diagnosis 155 Troubleshooting SiBE12 908 2 36 Heater Wire Abnormality Remote Controller Display Outdoor Unit LED Display md ma Ad 5 Method of A fault is identified when the outlet temperature of humidification fan does not reach a certain Malfunction temperature within a given time after the heater turned on Detection Malfunction When the temperature detected by the thermistor is lower than the outdoor temperature at Decision heat
30. HEAT operation of the indoor unit in the first selected room stops the ventilation of the second selected room will start e Even though the humidity of first selected room reaches a target level the ventilation of the second selected room will not start unless the HUMID HEAT operation of the indoor unit in the first selected room stops 3 When the indoor unit in the first selected room is in FRESH AIR SUPPLY VENTILATION and the indoor unit in the second selected room is in HUMID HEAT operation 1 When the ventilation of the first selected room stops the humidifying operation of the second selected room will start e The humidifying operation of the second selected room will not start unless the ventilation of the first selected room stops 4 When the indoor units in both 2 rooms are set to FRESH AIR SUPPLY VENTILATION 1 Priority will be given to the indoor unit in the first selected room and the indoor unit in the second selected room will be in a ventilation standby state At that time no automatic switching explained in 1 will be possible The ventilation of the second selected room will start after the ventilation of the first selected room stops 3P232703 1 Installation Operation Manual 91 Operation Manual SiBE12 908 92 Installation Operation Manual SiBE12 908 Part 6 Service Diagnosis 1 Service Check Function as esses saa ae acs sonbee ee ce aa ah cca ts de oe 95 1 1 Failure Diagnosis
31. It is easily activated from the wireless remote controller by pushing the ECONO button m When this function is ON the maximum capacity is also down Approx 20 m This function can only be set when the unit is running Pressing the operation stop button causes the settings to be canceled m This function and POWERFUL operation cannot be used at the same time The latest command has the priority Power consumption and current Econo Mode Time R4300 Details m ECONO mode can be activated while the unit is running The remote controller can send the ECONO command when the unit is in COOL HEAT DRY or AUTO operation m When the ECONO command is valid the input current is under reducing control Refer to Input current control on page 33 Function and Control 19 Main Functions SiBE12 908 1 12 NIGHT SET Mode When the OFF timer is set the NIGHT SET circuit automatically activates The NIGHT SET circuit maintains the airflow setting made by users The NIGHT SET The NIGHT SET circuit continues heating or cooling the room at the set temperature for the first Circuit one hour then automatically raises the temperature setting slightly in the case of cooling or lowers it slightly in the case of heating for economical operations This prevents excessive heating in winter and excessive cooling in summer to ensure comfortable sleeping conditions and also conserves electricity Cooling Operation s
32. Manual SiBE12 908 Operation Manual WEEKLY TIMER Operation J DAIKIN N jo he fal ei TUE FAN e ON OFF a a F 506 HUM TEMP C o A y MODE ECONO a POWERFUL COMFORT SWING i ale as QUIET SENSOR 1 WEEKLY 5 COPY BACK Pa NEXT 3 5 7 SELECT OFF Y ON 2 4 6 CANCEL EDY E To use WEEKLY TIMER operation e Make sure the day of the week and time are set If not set the day of the week and time page 7 Programi Program2 Program 3 Program 4 ON OFF ON OFF Monday E gt 27 C amp 00 830 17 30 22 00 Setting Displays MON gt Day and number settings ON OFF settings Time settings Temperature settings 1 Press PROGRAM button e The day of the week and the reservation number of the current day will be displayed e Programs 1 4 settings can be made per day 2 Press SELECT button to select the desired day of the week and reservation number e Pressing the SELECT button changes the reservation number and the day of the week 3 Press NEXT button e The day of the week and reservation number will be set CEW and ON blink 4 Press SELECT button to select the desired mode e Pressing the SELECT button changes ON or OFF setting in sequence k gt r gt ON T
33. No 14 Refer to P 166 Check the power supply Check No 16 Discharge pressure check i Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Replace stop valve NO Judge YES Check No 29 Short circuit check NO YES Check the voltage of electrolytic capacitor NO gt Replace Outdoor unit PCB Outdoor fan Humidification fan Four way valve coil Replace the outdoor unit YES Is the harness of NO PCB electric component or compressor connected properly Turn off the power supply and disconnect U V and W harnesses Check No 14 Check the inverter by the inverter checker Is there any LED YES gt Connect properly Inverter checker Part No 1225477 turned off gt Rectify the power supply or replace the outdoor unit PCB gt Replace the compressor R9445 Service Diagnosis 137 Troubleshooting SiBE12 908 2 26 DC Voltage DC Current Sensor Abnormality Remote i j Controller Display Outdoor UnitLED Ax 5 Display Method of DC voltage or DC current sensor system abnormality is identified based on the compressor Malfunction operation frequency and the input current detected by the product of DC current and DC Detection voltage Malfunction When the compressor operation frequenc
34. PCB abnormality or communication circuit abnormality 150 uo syslen Signal transmission error on outdoor unit PCB 153 ue Incompatible power supply between indoor unit and outdoor unit 122 Indoor Incomplete setting for hose length 123 100 Service Diagnosis SiBE12 908 Troubleshooting Code Unit Description Reference page vice ean Freeze up protection in other rooms Unspecified voltage between 124 ma System indoor and outdoor units Lights out of microcomputer status lamp 160 Service Diagnosis 101 Troubleshooting SiBE12 908 2 2 Air conditioner does not run Method of Malfunction Detection Malfunction Decision Conditions Supposed m Power supply is OFF Causes E Improper power supply voltage m Improper connection of wire m Incorrect combination of indoor unit and outdoor unit m Battery shortage of remote controller m Invalid address setting m Protection device works dirty air filter insufficient gas over filling mixed air etc m Transmission error between indoor unit and outdoor unit Defective PCB on outdoor unit 102 Service Diagnosis SiBE12 908 Troubleshooting Troubleshooting AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Is the power supply plug inserted into the NO outlet or the breaker for gt Insert the power supply the power supply plug into the outlet Turn on
35. The result is shown in the illustration on the right MULT MONITOR e The unit in Room B is in HEAT operation besides ventilation 78 Installation Operation Manual SiBE12 908 Operation Manual 3 5 FRESH AIR SUPPLY VENTILATION FRESH AIR SUPPLY VENTILATION This function takes in outdoor air to refresh indoor air E To start FRESH AIR SUPPLY VENTILATION 1 Press HUMIDIFY VENTILATE button and select a J DAIKIN NOTE FRESH AIR SUPPLY VENTILATION mode Mode Cyclic of humidity settings Multi monitor lamp a Lit white for 2 seconds o 0 CONT Hi OSsTD a OFF z Low a After that return to the color of selected HEAT A operation mode or a Select change to yellow in a standby state AUTO COOL DRY a gt OFF i FAN e is displayed on the LCD e disappears from the LCD m Notes on FRESH AIR SUPPLY VENTILATION An example of FRESH AIR SUPPLY VENTILATION page 26 Initial state of operation COOL SUPPLY VENTILATION MULT MONITOR e The unit not in operation in Room B will go into ventilation while the unit in Room A is in COOL operation besides ventilation The result is shown in the illustration on the right First selected priority E To cancel FRESH AIR SUPPLY VENTILATION 2 Press HUMIDIFY VENTILATE
36. WEEKLY TIMER settings is shown below Example The same timer settings are made for the week from Monday through Friday while different timer settings are made for the weekend Monday Make timer settings up to programs 1 4 page 22 Program 1 Program 2 Program 3 Program 4 ON OFF ON OFF eo 1N z HOH 6 00 is Tuesday Use the copy mode to make settings for Tuesday to Friday because these settings are the same to as those for Monday page 24 Friday Program 1 Program 2 Program 3 Program 4 ON OFF ON OFF 1N HOH 6 00 8 30 17 30 22 00 Saturday No timer settings Sunday Make timer settings up to programs 1 4 page 22 Program 1 Program 2 Program 3 Program 4 ON OFF OFF ON T T T T ire 8 00 00 21 00 Up to 4 reservations per day and 28 reservations per week can be set in the WEEKLY TIMER The effective use of the copy mode ensures ease of making reservations The use of ON ON ON ON settings for example makes it possible to schedule operating mode and set temperature changes Furthermore by using OFF OFF OFF OFF settings only the turn OFF time of each day can be set This will turn OFF the air conditioner automatically if the user forgets to turn it OFF 86 Installation Operation
37. be successfully received m Defective outdoor unit PCB m Disconnection or breakage of harness between PCBs Service Diagnosis 153 Troubleshooting SiBE12 908 Troubleshooting A Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check flashing interval of LED 5 Is it 0 5 sec YES 0 5 sec interval same as LED A NO 0 2 sec interval Check voltage between 5V and GND Replace outdoor unit PCB YES Power on again YES Is the fault repeated Replace outdoor unit PCB NO The cause seems to be an external factor other than failure of the outdoor unit PCB Monitor in long term R9454 154 Service Diagnosis SiBE12 908 Troubleshooting 2 35 Fan Motor System Abnormality Fan Lock Remote Controller Display Outdoor Unit LED Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Check No 23 Refer to P 170 Pat ro Ad 5 During humidification fan motor running fan motor system abnormality is identified based on the fan speed rpm detected by Hall IC lt Humidification fan gt When fan speed does not reach 100 rpm within 12 sec after fan motor start up lt Humidification fan gt m Defective motor Hall IC for humidification fan m
38. controls the electronic expansion valve opening to reach the target sub cooling E Liquid Pipe Thermistor When only one indoor unit is heating the indoor liquid pipe thermistor is used for a sub cooling control The system calculates the actual sub cooling with the liquid pipe temperature and the maximum heat exchanger temperature between rooms and controls the opening of the electronic expansion valve to reach the target sub cooling When all indoor units are heating the liquid pipe thermistor is used for liquid pipes isothermal control The system controls electronic expansion valves to make liquid pipe temperatures the average of present temperature of each room 26 Function and Control SiBE12 908 Control Specification 3 Control Specification 3 1 Mode Hierarchy Outline There are two modes the mode selected in user s place normal air conditioning mode and forced operation mode for installation and providing service Detail 1 For heat pump model There are following modes stop cooling includes drying heating include defrosting Air conditioner control mode Forced operating mode Forced cooling for Pump Down Operation Normal operating mode Cooling L Heating Defrosting L_ Stop mode except for cooling heating modes by indoor command Preheat operation t During C capacitor is discharging Stop R2829 i
39. e OFF and setting time are displayed on the LCD e The TIMER lamp lights up MULTI MONITOR m ls lee Pee a a ea Oe om xe ZRD m E To cancel the OFF TIMER operation 4 Press CANCEL button e OFF and setting time disappears from LCD e and day of the week are displayed on the LCD The TIMER lamp goes off NOTE e When TIMER is set the present time is not displayed e Once you set ON OFF TIMER the time setting is kept in the memory The memory is canceled when remote controller batteries are replaced e When operating the unit via the ON OFF TIMER the actual length of operation may vary from the time entered by the user Maximum approx 10 minutes m NIGHT SET MODE When the OFF TIMER is set the air conditioner automatically adjusts the temperature setting 0 5 C up in COOL 2 0 C down in HEAT to prevent excessive cooling heating for your pleasant sleep 84 Installation Operation Manual SiBE12 908 Operation Manual TIMER Operation FAN e ON OFF HUM 2A J DAIKIN 4 TEMP C POWERFUL COMFORT QUIET _ SENSOR Ca SWING E3 COPY BACK A SELECT OFF v nN 1 3 4 CANCEL ATTENTION E To use ON TIMER operation e Check that the clock is correct If not set the clock to the present time page 7 1 Press ON TI
40. error code displayed on the remote controller Does it operate on test operation mode YES YES YES Diagnose by an error code gt Go to troubleshooting Diagnose the indoor unit and the outdoor unit by LED gt Replace the outdoor unit PCB Go to LED diagnosis investigate the symptoms R9421 104 Service Diagnosis SiBE12 908 Troubleshooting 2 3 Air conditioner runs but does not get cooling heating Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Incorrect temperature setting Incorrect combination of indoor unit and outdoor unit Blocked air filter Insufficient power Refrigerant piping is too long Improper setting of piping length Defective field piping squeezed etc Service Diagnosis 105 Troubleshooting SiBE12 908 Troubleshooting Check No 02 Refer to P 162 AN Warning A Caution or parts damage may be occurred Be sure to turn off power switch before connect or disconnect connector Is the set temperature correct Thermostat off E Set the temperature properly Is there required NO installation space Isn t it short circuited gt Secure required space Is the indoor unit compatible for connecting with the outdoor unit Check the compatibility Arrange for a correct combination YES I
41. has already passed after heating operation startup See Note 4 Heating operation does not work to its full capacity Meanwhile the continuous humidification is selected humidifying operation has the priority 5 Room humidity is under 70 RH il Note m Exclude the case when it is recovered from thermostat off or when the defrosting operation finished Function and Control SiBE12 908 Main Functions Howto Checkthe You can check whether the humidifying unit is in good working order If you set HUMID HEAT Motion of test operation refer to the installation manual for details you can check even beyond the range Humidifying of the conditions for humidifying operation Operation 1 Hygroscopic fan s s s Air is exhaled from the front exhaust outlet of outdoor unit 2 Humidifying fan heater damper Warm air is blown from the duct of outdoor unit 3 Humidification rotor ee The rotor is rotating with top panel off As for the performance estimate from psychrometric chart with the measured temperature and humidity of the outdoor air and of the humidified air in front of the indoor outlet using thermal hygrometer Airflow rate m min 0 38 Humidity At HUMID HEAT operation as room temperature rises relative humidity is temporarily lowered Fluctuation by This is because as room temperature rises relative humidity is lowered even if the moisture Temperature content is the same Settings e g
42. heat exchanger thermistor or outdoor air thermistor Defective outdoor unit PCB Water mixed in the field piping Defective electronic expansion valve Defective stop valve AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check No 02 Malfunctioning Check the 7 gt Replace the defective thermistors Discharge pipe thermistor thermistor Outdoor unit heat exchanger thermistor Outdoor temperature thermistor Functioning Check No 17 Check the electronic expansion valve Malfunctioning Replace the valve itself or the coil Functioning Check No 12 Check the Malfunctioning gt Refer to the refrigerant line Se i Nerigerant shortage check procedure Four way valve malfunctioning Functioning Water mixed Stop valve defective gt Replace the outdoor unit PCB R9442 Service Diagnosis 131 Troubleshooting SiBE12 908 2 22 High Pressure Control in Cooling Remote Controller Display Outdoor Unit LED Display ta Ad 5 Method of During cooling high pressure control stop frequency attenuation etc is executed according Malfunction to the temperature detected by the heat exchanger thermistor Detection Malfunction m Activated when the temperature being sensed by the heat exchanger thermistor rises above Decision 65 C Conditions m De
43. in outdoor unit PCB m Out of control of microcomputer caused by external factors Noise Momentary voltage drop Momentary power loss m Defective outdoor unit PCB m Defective thermal fuse in outdoor terminal board 150 Service Diagnosis SiBE12 908 Troubleshooting Troubleshooting AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check indoor unit also because a comunication circuit fault may be caused by the problem related to the indoor unit Check supply voltage NO Rated voltage gt Rectify the power supply Check varistor on the outdoor unit PCB YES Is it damaged Replace varistor Check fuse on the outdoor unit PCB Does it have conductivity Replace fuse Check thermal fuse on the terminal board NO Check terminal board connecting wire for proper connection l Does it have conductivity Check 5V and GND on the outdoor unit PCB Firmly connected Replace thermal fuse on the terminal board Y NO gt Reconnect properly Replace terminal board Replace thermal fuse on the terminal board Power on again Wait more than 10 sec gt Replace outdoor unit PCB 1 Continued to the next page R9452 Service Diagnosis 151 Troubleshooting SiBE12 908
44. m When a microcomputer doesn t have a signal from the sensor in 20 minutes it judges that nobody is in the room and operates the unit in temperature shifted 2 C from the set temperature Cooling Dry 2 C higher Heating 2 C lower and AUTO according to the operation mode at that time 1 Incase of FAN mode the fan speed reduces by 60 rpm 3 Airflow direction in 2 AREA INTELLIGENT EYE operation m Detection method The opposite area of detected area is set as the target direction WL Indoor unit Top view ES Left wf Se Right r N ow 7 i Sy oe Human i NS Pa 8 l NS Area B Area A R3853 Detection signal ON in both area A and B Shift the airflow direction to area B left side Detection signal ON in area A Shift the airflow direction to area B left side Detection signal ON in area B Shift the airflow direction to area A right side Detection signal OFF in both area A and B No change Fons When the detection signal OFF in both area A and B the unit starts energy saving operation Others m The dry operation can not command the setting temperature with a remote controller but internally the set temperature is shifted by 1 C Function and Control Main Functions SiBE12 908 1 10 Inverter POWERFUL Operation Outline In order to explo it the cooling and heating capacity to full extent operate the air conditioner by increasing the indoor fan rotating speed and t
45. nuts repeat steps 2 gt 3 gt 4 ea 5 Remove the valve caps on the liquid and gas stop valves at the pipes for rooms A and B es 6 Open the valve rods on the liquid stop valves for rooms A and B by turning them 90 counterclockwise using a hex wrench Close them 5 seconds later and check for gas leaks After checking for gas leaks check the areas around flares on the indoor unit and the areas around flares and valve rods on the outdoor unit by applying soapy water Wipe down thoroughly after the check is complete Ye 7 Remove the charge hose from the gas stop valve service ports at the pipes for rooms A and B and completely open the liquid and gas stop valves at the pipes for rooms A and B Stop the valve rods as far as they go and do not attempt to turn them any further DOA 8 Use a torque wrench to tighten the valve caps and service port caps on the liquid and gas stop valves at the pipes for rooms A and B to the designated torque E Compound gauge a Valve cap Gauge manifold Room A liquid stop valve Low pressure valve Room A gas stop valve Room B liquid stop valve High pressure valve be D Room B gas stop valve Charge hose Vacuum pump adapter Vacuum pump Service port 62 Installation Operation Manual SiBE12 908 Installation Manual 5 Refilling the refrigerant Check the type of
46. on In this case set the units that are turned on later to the same operation mode 1 as the first unit Otherwise they will enter the Standby Mode and the operation lamp will flash this does not indicate malfunction 1 COOL DRY and FAN mode may be used at the same time e AUTO mode automatically selects COOL mode or HEAT mode based on the room temperature Therefore AUTO mode is available when selecting the same operation mode as that of the room with the first unit to be turned on CAUTION Normally the operation mode in the room where the unit is first run is given priority but the following situations are exceptions so please keep this in mind If the operation mode of the first room is FAN Mode then using HEAT Mode in any room after this will give priority to HEAT In this situation the air conditioner running in FAN Mode will go on standby and the operation lamp will flash m HUMID HEAT operation FRESH AIR SUPPLY VENTILATION When the indoor units in both 2 rooms are set to HUMID HEAT operation FRESH AIR SUPPLY VENTILATION the indoor unit in either 1 of the room operate HUMID HEAT operation FRESH AIR SUPPLY VENTILATION The indoor units in both 2 rooms do not simultaneously go into HUMID HEAT operation FRESH AIR SUPPLY VENTILATION Priority is given to the indoor unit in either one of the rooms with the mode selected earlier The indoor unit in the other room with mode selected later will change its state accor
47. on the outdoor temperature and humidity Water supply is not necessary because moisture from the outdoor air is taken into the room Installation Operation Manual 77 Operation Manual SiBE12 908 NOTE m Notes on HUMID HEAT operation at multi system e When the indoor units in both 2 rooms are set to HUMID HEAT operation FRESH AIR SUPPLY VENTILATION the indoor unit in either 1 of the room operate HUMID HEAT operation FRESH AIR SUPPLY VENTILATION The indoor units in both 2 rooms do not simultaneously go into HUMID HEAT operation FRESH AIR SUPPLY VENTILATION Priority is given to the indoor unit in either one of the rooms already in operation When the humidity of the room to which priority is given reaches a target level the humidification of the room will stop and the humidification of the other room will start automatically page 26 m Refer to the following application examples Example 1 The indoor units in both 2 rooms are in HUMID HEAT operation Initial state of operation First selected priority Automatic switchover between 2 rooms e The unit in Room B in HEAT operation will be changed into HUMID HEAT operation while the unit in Room A is in HUMID HEAT operation The result is shown in the illustration on the right e While the unit in Room A is in CONT HUMID HEAT operation the unit in Room B will not go into HUMID HEAT operation automatically as right example
48. other rooms Decision m Operation halt due to unspecified voltage between indoor and outdoor units Conditions Supposed m Operation halt due to the freeze up protection in other rooms Causes m Wrong connections at the indoor unit m PCB wrongly connected Troubleshooting AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Error displaying air NO conditioner running gt The freeze up protection is activated in other rooms Refer to 45 li YES Supply voltage as NO specified gt Correct li YES Check the model number NO Normal Reconnect li YES Check the combination of all the models being connected R7151 124 Service Diagnosis SiBE12 908 Troubleshooting 2 16 Outdoor Unit PCB Abnormality Remote Coniroller Display Outdoor Unit LED Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Ad 5 A 5 zero cross abnormality m Detect within the programme of the microcomputer that the programme is in good running order m Detect input of zero cross signal m When the programme of the microcomputer is in bad running order m Zero cross signal can not be detected m Out of control of microcomputer caused by external factors Noise Momentary fall of voltage Momentary power loss m Defective outdoor unit PCB m
49. secure wire retainer so that 4 wires sustain no external stress Indoor 2 RA Wire retainer unit 3 Use the specified DT a wire type Firmly fix the wires with the terminal screws HOSRN WARNING 1 Do not use tapped wires strand wires extensioncords or starburst connections as they may cause overheating electrical shock or fire 2 Do not use locally purchased electrical parts inside the product Do not branch the power for the drain pump etc from the terminal block Doing so may cause electric shock or fire The drain hose should be inclined downward T Drain piping 1 Connect the drain hose as described right No trap is permitted Do not put the end of the hose in water 2 Remove the air filters and pour some water into the drain pan to check the water flows smoothly 3 When drain hose requires extension obtain an extension hose commercially iidoiar ublk available drain hose Be sure to thermally insulate the indoor section of the extension hose TTT p Heat insulation tube field supply 4 When connecting a rigid polyvinyl chloride pipe nominal diameter 13mm directly to the drain 1 hose attached to the indoor unit as with my Q__ c_ embedded piping work use any commercially Drain hose supplied with Commercially available drain Commercially available rigid available drain socket nominal diameter 13mm the indoor unit Socket y polyvinyl chlor
50. set to AUTO If the upward and downward airflow direction is selected the COMFORT AIRFLOW function will be canceled e Priority is given to the function of whichever button is pressed last e The COMFORT AIRFLOW function makes the following airflow direction adjustments The flaps will move upward while cooling so that the airflow will be directed upward The flaps will move downward while heating so that the airflow will be directed downward e COMFORT AIRFLOW operation cannot be selected while FAN operation Cooling operation O l Heating operation 80 Installation Operation Manual SiBE12 908 Operation Manual COMFORT AIRFLOW and INTELLIGENT EYE Operation INTELLIGENT EYE is useful for Energy Saving m Energy saving operation e Change the temperature 2 C in heating 2 C in cooling 2 C in dry mode from set temperature e Decrease the airflow rate slightly in FAN mode only If no presence detected in the room during 20 minutes NOTE m Notes on INTELLIGENT EYE operation e The INTELLIGENT EYE sensor according to the following situations Vertical angle 90 Side View Area 1 A person is detected in area 1 A person is detected in area 2 faa Horizontal angle 110 Top View Area 1 Area 2 The air conditioner will go into energy saving mode after 20 minutes People are detected in both areas No p
51. switch before connect or disconnect connector Caution or parts damage may be occurred Output overcurrent may caused by improper wiring inside the machine If the machine stops due to output overcurrent after connecting or disconnecting wires to replace part check wiring for proper connection Is the stop valve NO fully opened gt Open the stop valve fully Check that the fault condition appears whenever turning on the power supply again after turning it off Monitor the supply voltage discharge and suction pressures and other factors for a long term Repeated Possible causes O Momentary supply voltage drop Keep on using as it is Compressor motor overloaded monitoring Short circuit gt Check connectors and Turn off the power supply and other fittings of electric disconnect U V and W components harnesses Check No 14 Inverter checker Check the inverter by the Part No 1225477 inverter checker Is there any LED YES turned off gt Rectify the power supply or replace the outdoor unit PCB Check No 15 Check the power transistor NO gt Replace the outdoor unit PCB YES Turn off the power supply replace the harnesses and restart the compressor after turning on the power supply again Y Check the supply voltage y NO Rated voltage gt Rectify the power supply
52. tester shows good conductivity when pins are replaced Set the tester to the resistance measuring range o x x If the pointer swings If the pointer does not and returns the swing or does not return electrolytic capacitor the electrolytic capacitor is is OK out of order R3466 164 Service Diagnosis SiBE12 908 Check 3 7 Refrigerant System Check Check No 12 Refrigerant system check Models with discharge pipe thermistor blockage gas leakage insufficient gas are to be checked s the discharge pipe YES thermistor disconnected from the holder Rectify Is the temperature of suction pipe of four way valve extremely high YES Four way valve operation fault replace it Gas leakage check Refer to the insufficient gas detection Replace the gas R9461 Service Diagnosis 165 Check SiBE12 908 3 8 Inverter Checker Check Check No 14 1 Characteristics If abnormal stop occurs due to compressor startup failure or overcurrent output when using inverter unit it is difficult to judge it results from the compressor failure or other failure control PCB power transistor etc The inverter analyzer makes it possible to judge the cause of trouble easily and securely Connect this analyzer as a quasi compressor instead of compressor and check the output of inverter 2 Operation Method 1 Be sure to turn the po
53. the chips do not enter the pipe Flaring 3 Put the flare nut on the pipe Set exactly at the position shown below 4 Flare the pipe yA Flare tool for R410A Conventional flare tool 5 Check that the flaring is properly made Zh EE Clutch type Clutch type Rigid type Wing nut type Imperial type Die A 0 0 5mm 1 0 1 5mm 1 5 2 0mm Check Flare s inner The pipe end must surface must be evenly flared in be flaw free a perfect circle Make sure that the flare nut is fitted A WARNING 1 Do not use mineral oil on flared part 2 Prevent mineral oil from getting into the system as this would reduce the lifetime of the units 3 Never use piping which has been used for previous installations Only use parts which are delivered with the unit 4 Do never install a drier to this R410A unit in order to guarantee its lifetime 5 The drying material may dissolve and damage the system 6 Incomplete flaring may cause refrigerant gas leakage 64 Installation Operation Manual SiBE12 908 Installation Manual Pump Down Operation In order to protect the environment be sure to pump down when relocating or disposing of the unit 1 Remove the valve caps on the liquid and the gas stop valves at the pipes for rooms A and B Liquid Hexagonal 2 Run the unit on forced cooling Refer to the below SEVAN ye 3 After 5 to 10 minutes close the liquid stop valves at the pipes for rooms A and B using a hex wrench 4 After 2 to 3 mi
54. the front panel with the grooves and push all the way in Then close slowly Push the center of the lower surface of the panel firmly to engage the tabs Push the rotating shaft of the front panel into the groove 2 Removing and installing front grille Upper hook eee e Removal method 1 Remove front panel to remove the air filter 2 Remove 2 screws from the front grille fall oe 3 In front of the OOO mark of the front grille there are 3 upper hooks Lightly pull the front grille toward you with one hand and push down on the Lightly pull the front Upper hook hooks with the fingers of your other hand grille toward you with one hand and push down on the hooks with the fingers of your other hand 3 locations Upper hook When there is no work space because the unit is close to ceiling A CAUTION Be sure to wear protection gloves Place both hands under the center of the front grille and while pushing up pull it toward you 1 Push up e Installation method 1 Install the front grille and firmly engage the upper hooks 3 locations 2 Install 2screws of the front grille 3 Install the air filter and then mount the front panel Installation Operation Manual 47 Installation Manual SiBE12 908 Preparation before Installation 3 How to set the different addresses When 2 indoor units are installed in 1 room
55. the individual power transistor Refer to check No 15 When the power transistor and control PCB are integrated Replace the control PCB When the power transistor can be checked individually J Check the resistance value Refer to check No 15 If NG gt The power transistor may have a failure Replace the power transistor If the power transistor is normal check if there is any solder cracking on the filter PCB If any solder cracking is found Replace the filter PCB or repair the soldered section If the filter PCB is normal Replace the control PCB Caution When the output frequency is low the LED flashes slowly As the frequency increases the LED flashes quickly It looks like the LED is lit If the operation is carried out with no load the condition of the compressor is disconnected some of units may stop operation with CT system error due to no electric current or startup failure because the compressor does not turn In this case check if the LED is flashing during operation to malfunction stop Refer to the service manual of each air conditioner for checking whether the alarm LEDs for CT system startup failure etc are provided or not On completion of diagnose by this checker be sure to re crimp the faston terminal for resetting the system Otherwise the terminal may be burned due to loosening This size is shortened PEE _by crimp Fasto
56. the system shall be down as the system abnormality 3 14 Forced Operation Mode Outline Detail Forced operating mode includes only forced cooling Forced Cooling Item Forced Cooling Forced operation allowing 1 The indoor unit is not abnormal but the indoor unit which is not in conditions the freezing prohibiting zone is present in more than 1 room 2 The outdoor unit is not abnormal and not in the 3 minute standby mode The forced operation is allowed when the above and conditions are met Starting adjustment When the indoor unit on off button is pressed for continuous 5 second as the above conditions are met 1 Determine operating room All rooms must operate 2 Command frequency 70Hz 40 class 47Hz 50 class 3 Electronic expansion It depends on the capacity of the operating indoor unit valve opening 4 Outdoor unit adjustment Compressor is in operation 5 Indoor unit adjustment The command of forced cooling operation is transmitted to all indoor units End 1 When the indoor units on off button of the unit which sent the command is pressed again 2 The operation is to end automatically after 15 min Others The protect functions are prior to all others in the forced operation 42 Function and Control SiBE12 908 Control Specification 3 15 Additional Function 3 15 1 POWERFUL Operation Mode Compressor operating frequency an
57. the temperature difference is in the zone B Cooling Dry 10 minutes Heating 10 seconds Cooling Dry ON Room temperature set point Cooling 0 5 C c Dry 0 5 C B Cooling 2 0 C A Dry 2 5 2 0 C OFF R4668 Heating OFF Room temperature set point A 2 0 C B Cc 0 5 C ON R9424 Function and Control SiBE12 908 Main Functions 1 3 Automatic Operation Detailed Explanation of the Function Automatic Cooling Heating Function When the AUTO mode is selected with the remote controller the microcomputer automatically determines the operation mode from cooling and heating according to the room temperature and setting temperature at the time of the operation startup and automatically operates in that mode The unit automatically switches the operation mode to cooling or heating to maintain the room temperature at the main unit setting temperature 1 Remote controller setting temperature is set as automatic cooling heating setting temperature 18 to 30 C 2 Main unit setting temperature equals remote controller setting temperature 3 Mode switching point are as follows Heating Cooling switching point Room temperature gt Main unit setting temperature 3 0 deg 2 Cooling Heating switching point Room temperature lt Main unit setting temperature 2 5 deg 3 Thermostat ON OFF point is the same as the ON OFF point of cooling or heating operation 4 Dur
58. to the corresponding circuit diagram SW power supply FU1 Four way valve Hygroscopic fan Outdoor fan Fue Humidification fan When FU2 is melted check outdoor fan for proper function If NG in step 2 Defective PCB Replace the PCB If NG in step 4 Defective Hall IC Replace the DC fan motor If OK in both steps 2 and 4 Replace the PCB PCB S70 or S72 RPM command pulse input 0 15V 15V DC270V R3477 m Propeller fan motor S70 Humidification fan motor S72 lt For Hygroscopic fan gt Check that the connectors HK1 HK2 HK3 for proper connection 1 Check that the supply voltage between HK1 and HK3 is 5VDC Check when the machine is not in suspend mode 2 If NG in step 1 Defective PCB Replace the PCB SW power supply FU1 Four way valve Hygroscopic fan Outdoor fan Rug Humidification fan Therefore when the FU2 is melted check rotor motor for proper function 170 Service Diagnosis SiBE12 908 Check 3 13 Main Circuit Short Check Check No 29 m Measure the resistance between pins at both ends of DB1 m Ifthe resistance is or less than 1 KQ the main circuit short terminal of the tester in case of digital terminal terminal of the tester in case of digital terminal i several kQ several kQ Resistance in OK severa
59. with Multi Colored Indicator Lamp eeeeeeee 95 1 2 Failure Diagnosis by LED Indication c cc cceeeeeeeeeeeeeeeeeeeeeeeeeeneaaes 96 1 3 Failure Diagnosis by Remote Conttroller cc cccecceeeeeeeeeeeeeeeeeeneeees 97 2 SAOUDISSMOOUING ste setet naaa a i aaa aaa 100 2 1 Error Code Indication by Remote Controller s sssssseseeeseeenesrrrrsserrneee 100 2 2 Air conditioner does not run 22 ccccceeeeeeeeeeceeeeeeeeeeeeeeeeeeeeeneeeeesceeees 102 2 3 Air conditioner runs but does not get cooling heating eee 105 2 4 When operation starts safety breaker WOrkS sssssrrsserrrreererrrrsrrrrssee 107 2 5 Air conditioner makes big noise and vibration c ccceeeeeeeeeeeeentees 109 2 6 Air does not humidified enough ssseeeeeeeerreeeeeerrrrrssssrerrrrrrrssssrrrrnnnna 110 2 7 Indoor Unit PCB Abnormality s ccctccieccceseeig aetna detiiea aie nae 113 2 8 Freeze up Protection Control or High Pressure Control 00ce 114 2 9 Fan Motor DC Motor or Related Abnormallity cccceeseeeeeeeeees 116 2 10 Thermistor or Related Abnormality Indoor Unit 0 cece 118 2 11 Humidity Sensor Abnormality 0 00 0 ceeecceeeeeeseeeeeeesaeeetesseeeeeeeeneaeees 119 2 12 Signal Transmission Error Indoor Unit Outdoor Unit 0 ee 120 2 13 Incompatible Power Supply between Indoor Unit and Outdoor Unit 122 2 14 Incomplete Setting for Hose Length eceeceec
60. 08 Troubleshooting Check No 02 Refer to P 162 Check No 03 Refer to P 163 Check No 05 Refer to P 163 il Note A Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Turn off the power supply and turn it on again to get the system started Does the fault appear again N WARNING To cool down the electricals the outdoor unit fan gets started when the radiation fin temperature rises above 75 C even when the air conditioning is not operated and stops itself when it drops below 70 C YES Has PCB been replaced Check if the silicon grease applied properly on the radiation fin If not apply it Silicon grease Part No 1172698 Check No 02 Thermistor resistance check Fin thermistor Check the radiation fin temperature Does the thermistor meet the specification chart of thermistor NO Replace the fin thermistor Does the temperature exceed the temperature to stop operation Check the power transistor and fin for looseness If they are found to be fit tightly replace the PCB or the power transistor Check No 05 NO Outdoor fan system check gt Replace the fan motor Rectify the connector and the fan motor lead wire Replace the outdoor unit PCB Too dirty Radiation fin dirty Slightly dirty Che
61. 3 iS 15 ne 27 my 4 bas 16 nS 28 L3 5 He 17 cy 29 i4 6 wo 18 cy 30 ny 7 AS 19 rs 31 ue 8 ES 20 uit 32 ER 9 uo 21 JS 33 AH 10 E3 22 E5 34 FR 11 AS 23 Ai 35 Hi 12 Fi 24 Ei 36 Pg il Note 1 A short beep and two consecutive beeps indicate non corresponding codes 2 To cancel the code display hold the timer cancel button down for 5 seconds The code display also cancels itself if the button is not pressed for 1 minute Service Diagnosis 97 Service Check Function SiBE12 908 Check Method 2 1 Press the 3 buttons TEMPA TEMPY MODE simultaneously Oy BY IMODE R8381 SC is displayed on the LCD J DAIKIN R9420 2 Select Si with TEMPA or WY button 3 Press the MODE button to enter the service check mode The figure of the ten s place blinks x Try again from the start when the figure does not blink J DAIKIN R9430 4 Press TEMPA or button and change the figure until you hear the sound of beep or pi pi 5 Diagnose by the sound pi The figure of the ten s place does not accord with the error code pi pi The figure of the ten s place accords with the error code but the one s not beep The both figures of the ten s and one s place accord with the error code See 7 6 Press the MODE button The figure of the one s p
62. 7 C the fan tap must be set to H When the outdoor air temperature is 18 37 C the fan tap must be set to M When the outdoor air temperature is lower than 18 C the fan tap must be set to L 2 When Heating Operation When the outdoor air temperature is lower than 4 C the fan tap must be set to H When the outdoor air temperature is 4 12 C the fan tap must be set to M When the outdoor air temperature is higher than 12 C the fan tap must be set to L Compression Protection Function 2 In order to obtain the dependability of the compressor the compressor must be stopped according to the conditions of the temperature of the outdoor air and outdoor heat exchanger m Operation stops depending on the outdoor air temperature Compressor operation turns OFF under the conditions that the system is in cooling operation and outdoor air temperature is below 10 C Function and Control 35 Control Specification SiBE12 908 3 11 Defrost Control Outline Defrosting is carried out by the cooling cycle reverse cycle The defrosting time or outdoor heat exchanger temperature must be more than its fixed value when finishing Detail Conditions for Starting Defrost The starting conditions must be made with the outdoor air temperature and heat exchanger temperature Under the conditions that the system is in heating operation 6 minutes after the compressor is started and more than 30 minutes of accumulated fine pass since the st
63. 75 Operation Manual SiBE12 908 Adjusting the 3 D airflow direction E To start 3 D airflow 1 3 Press the SWING C3 button and the SWING 2 button the C8 and 4m display will light up and the flap and louvers will move in turn E To cancel 3 D airflow 2 4 Press either the SWING CS button or the SWING 7m button COMFORT AIRFLOW operation e Check COMFORT AIRFLOW operation in the section of COMFORT AIRFLOW Operation and INTELLIGENT EYE Operation page 15 NOTE m Notes on flaps and louvers angles In DRY mode or e When SWING button is selected the flaps swinging range depends on the operation COOL mode mode See the figure a A S 3 Dimensional 3 D airflow e Using 3 dimensional airflow circulates cold air which tends to collected at the bottom of the room and hot air which tends to collect near the ceiling throughout the room preventing areas of cold and hot developing In HEAT mode m ATTENTION Stop operation e Always use a remote controller to adjust the angles of the flaps and louvers If you attempt to move it forcibly with hand when it is swinging the mechanism may be broken e Always use a remote controller to adjust the louvers angles In side the air outlet a fan is rotating at a high speed Lower limit Stop operation In FAN mode Upper limit eS z oy 807 W Lower limit Stop operation 76 Installation Operation Manual SiBE12 908 Oper
64. EELIGENT EY Easter MiGente ees 16 1 10 Inverter POWERFUL Operation c cccccecceeeeeeneeeeeeeeeeeeeeeeneeeeeennaaeeees 18 TTS ECON MOC siisti oie ow cree tea el on ean eae Aen ta atten Saas 19 112 NIGER SEF MOG orrara p e eea erena E toi nngdenieueleiezelrateineests 20 TAS Other FUNCIONS iiti a raa aaa 21 1 14 Table for Special Modes 00 0 cccceeeeeccceeeeeeceeeeenaeeeeeeeaeeeeseeseeeeeeeesaaaeees 23 2 FUNCHON ot THELMISIOF ispiti aaa aE aaa 25 2h Heat PUMP M del edanaren ate ae a 25 3 Control Specification sesh eectecacaaceaveiaaswstia dca anadvslas scdenaeciauneutenuseee 27 3 1 MOG GRA RCINY aeree etre taco eet deecdi irine Ei a ait skaai 27 3 2 Automatic switching for HUMID HEAT operation room 28 3 3 Frequency Control enrere omcatomtruda hereon EE E eaten 29 3 4 Controls at Mode Changing Start up sssesssssseeessneressrrrnnererenrsrerrnnee 31 3 5 Discharge Pipe Temperature Control 0 cccccceceeeeeeeeeeeenteeeeeeeeeeeeeee 33 3 6 Input Current COMO specs seii i e E A a ied 33 3 7 Freeze up Protection Control ccccesscceeeeseeeeeeeeeeeeeeeessaeeeeeeesaeeeenees 34 3 8 Heating Peak cut Control cccccceeeeesseeeeeeeeeeeeeeeeseeeeeeeaaeeeeeesaeeennenaes 34 9 9 Fan Controlan e cate e eres a aee 35 3 10 Liquid Compression Protection Function 2 s sssesssssersssrrrrsrrrrerssrerrssee 35 3 11 Defrost Control cise ee a E a ETE 36 3 12 Electronic Expansion Valve Control
65. F button causes the setting to be canceled and the x disappears from the LCD ECONO operation is a function which enables efficient operation by limiting the power consumption of the outdoor unit operating frequency ECONO operation functions in AUTO COOL DRY and HEAT modes e In case ECONO operation is selected in QUIET operation QUIET operation will be canceled e POWERFUL and ECONO operation cannot be used at the same time Priority is given to the function of whichever button is pressed last e Power consumption may not drop even if ECONO operation is used of the level of power consumption is already low Installation Operation Manual 83 Operation Manual SiBE12 908 3 9 TIMER Operation TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning You can also use OFF TIMER and ON TIMER in combination VF paKin E To use OFF TIMER operation e Check that the clock is correct If not set the clock to the present time page 7 1 Press OFF TIMER button Q00 is displayed e OFF blinks e and day of the week disappears from LCD y pp 2 Press SELECT button until the time setting reaches the point you like e Every pressing of either button increases or decreases the time setting by 10 minutes Holding down either button changes the setting rapidly 3 Press OFF TIMER button again
66. IMER OFF TIMER blank e In case the reservation has already been set selecting blank deletes the reservation Go to STEP 9 if blank is selected 5 Press NEXT button The ON OFF TIMER mode will be set EW and the time blink 6 Press SELECT button to select the desired time e The time can be set between 0 00 and 23 50 in 10 minute intervals e To return to the ON OFF TIMER mode setting press BACK button Go to STEP 9 when setting the OFF TIMER 7 Press NEXT button e The time will be set QW and the temperature blink Installation Operation Manual 87 Operation Manual SiBE12 908 FAN ON OFF J DAIKIN 4 TEMP ia POWERFUL COMFORT Ca NOTE 8 10 m Notes on WEEKLY TIMER operation e Do not forget to set the time on the remote controller first e The day of the week ON OFF TIMER mode time and set temperature only for ON TIMER mode can be set with WEEKLY TIMER Other settings for ON TIMER are based on the settings just before the operation e Both WEEKLY TIMER and ON OFF TIMER operation cannot be used at the same time The ON OFF TIMER operation has priority if it is set while WEEKLY TIMER is still active WEEKLY TIMER is activated after the reserved ON OFF TIMER operation is completed e Only the time and set temperature set with the weekly timer are sent with the PR
67. J 110 B 103 Reset f 102 zone D C 101 Return zone R2836 Management within the Zones Zone Control contents Stop zone When the temperature reaches the stop zone stop the compressor and correct abnormality Drooping zone Start the timer and the frequency will be drooping Keep zone Keep the upper limit of frequency Return Reset zone Cancel the upper limit of frequency 3 6 Input Current Control Outline Detail Detect an input current by the CT during the compressor is running and set the frequency upper limit from such input current In case of heat pump model this control is the upper limit control function of the frequency which takes priority of the lower limit of four way valve activating compensation The frequency control will be made within the following zones 2 Hz drooping 1 0 second after After 2 5 seconds rushing in the gt drooping zone gt I Compressor stops Stop zone nput current 1 2 droopin Drooping zone 13 Reset zone R1378 When a stop current continues for 2 5 seconds after rushing on the stop zone the compressor operation stops If a drooping current is continues for 1 0 second after rushing on the drooping zone the frequency will be 2 Hz drooping Repeating the above drooping continues until the current rushes on the drooping zone without change In the keep zone the frequency limit will remain In the return reset zone the frequ
68. L L ML M MH H HH POWERFUL R6833 R6834 cC The airflow rate is automatically controlled within this range when the FAN setting button is set to automatic 1 During POWERFUL operation fan operates H tap 50 rpm 2 Fan stops during defrost operation 3 In time of thermostat OFF the fan rotates at the following speed Cooling The fan keeps rotating at the set tap Heating The fan stops Dry The fan will stop after keeps rotating for a few minutes at LL tap On heating mode the indoor fan speed will be regulated according to the indoor heat exchanger temperature and the difference between the room temperature and the required set point The following drawing explains the principle of fan speed control for cooling MH M ML L fan speed 2 5 C 1 5 C 0 5 C Thermostat setting temperature Phase control Difference between room and set temperature R8301 In automatic fan speed operation upper limit is at M tap in 30 minutes from the operation start m The airflow rate is controlled automatically within the following steps Cooling L tap MH tap same as AUTOMATIC Heating ML tap MH tap m The latest command has the priority between POWERFUL and COMFORT AIRFLOW Function and Control SiBE12 908 Main Functions 1 7 HUMID HEAT Operation Operation FAN 1 Select HEAT mode e OON OFF a 2 Set hu
69. Left for 60 sec TEMP amp i MODE MODE z F 5 sec TEMY 1 ZE Service check mode Diagnosis see a e Left for 60 sec MODE e Operation OFF 2 i Trial operation mode Trial operation ON a ce o S e Leftfor30 min 8 le T 3 E T MODE 5 f Pipe set mode eee Hose length setting E Z MODE 2 sec MODE MODE 5 sec PI Pipe check mode l 2 Hose length check MODE S see e Left for 60 sec f MODE Hose Dry e MODE 5 sec Drying mode operation ON e Left for 30 min O ja OF a A e j u Humiditying airflow MODE Airflow rate IMODE S s66 rate setting mode setting e Left for 60 sec MODE Monitor brightness MODE 5 sec Monitor brightness setting mode setting e Left for 60 sec R9416 A Forced operation mode The buzzer beeps and the timer and multi colored indicator lamp illuminate Refer to page 42 for detail B Easy diagnosis mode You can identify the error code in a quite simple way but some of the error codes do not appear on the LCD Refer to the Check Method 1 on page 97 for detail 1 Service check mode You can identify the error code for diagnosis Refer to the Check Method 2 on page 98 for detail Function and Control 23 Main Functions SiBE12 908 2 Tr
70. MER button e 6 09 is displayed e ON blinks e and day of the week disappears from LCD 2 Press SELECT button until the time setting reaches the point you like e Every pressing of either button increases or decreases the time setting by 10 minutes Holding down either button changes the setting rapidly 3 Press ON TIMER button again e ON and setting time are displayed on the LCD The TIMER lamp lights up MULTI MONTOR ls leet 2D os E To cancel ON TIMER operation 4 Press CANCEL button e ON and setting time disappears from LCD e and day of the week are displayed on the LCD e The TIMER lamp goes off E To combine ON TIMER and OFF TIMER e A sample setting for combining the two timers is shown below Example Present time 23 00 The unit operating OFF TIMER at 0 00 ON TIMER at 14 00 adel OFF GPL bad ov 400 Combined E In the following cases set the timer again e After a breaker has turned OFF e After a power failure e After replacing batteries in the remote controller Installation Operation Manual 85 Operation Manual SiBE12 908 3 10 WEEKLY TIMER Operation WEEKLY TIMER Operation Up to 4 timer settings can be saved for each day of the week It is convenient if the WEEKLY TIMER is set according to the family s life style E Using in these cases of WEEKLY TIMER An example of
71. Minimum bend radius Thickness 10mm Min 30mm or more 40mm or more 30mm or more Thickness 0 8mm C1220T O 3 Use separate thermal insulation pipes for gas and liquid refrigerant pipes 50 Installation Operation Manual SiBE12 908 Installation Manual Indoor Unit Installation 1 Installing the mounting plate e The mounting plate should be installed on a wall which can support the weight of the indoor unit 1 Temporarily secure the mounting plate to the wall make sure that the panel is completely level and mark the boring points on the wall 2 Secure the mounting plate to the wall with screws Recommended mounting plate retention spots and dimensions Place a leveler on raised tab 4 Recommended mounting 450 103 plate retention spots 5 spots in all 400 gt Bilt size M10 200 415 wo amp Bilt size M10 bee S 8 kok g a a a 1 i WO Emas 5 io AA B E E Lota Nja 1 Use tape measure wo i oy be U isp G D 1 3 as shown EY Qag I sl Position the end g le 1 Se 77 of a tape measure H 5 p KONE KAP g at y ig e ss J a 3 fe eee Ko J Liquid pipe end Through the wall 61 175 5 60 5 hole 670mm Keep here the piece cut out Drain hose position 800 from the unit for piping unit mm The removed pipe port cover can be
72. OGRAM button Set the weekly timer only after setting the operation mode the fan strength and the fan direction ahead of time e Shutting the breaker off power failure and other similar events will render operation of the indoor unit s internal clock inaccurate Reset the clock page 7 e The BACK button can be used only for the ON OFF TIMER mode and time settings It cannot be used to go back to the reservation number Press SELECT button to select the desired temperature e The temperature can be set between 10 C and 32 C Cooling The unit operates at 18 C even if it is set at 10 to 17 C Heating The unit operates at 30 C even if it is set at 31 to 32 C e To return to the time setting press BACK button e The set temperature is only displayed when setting the ON TIMER Press NEXT button e The temperature will be set and go to the next reservation setting e To continue further settings repeat the procedure from STEP 4 Press PROGRAM button to complete the setting e Be sure to direct the remote controller toward the indoor unit and check for a receiving tone and flashing the operation lamp W is displayed on the LCD and WEEKLY TIMER operation is activated e The TIMER lamp lights up MULTI MONITOR m wl eat RD oF e A reservation made once can be easily copied and the same settings used for another day of the week Refer to RIEN page 24 88 Installati
73. Pipe set mode When the unit receive signal the sound emitted Be sure to check the sound If the sound is not heard press MODE button again 4 Pressing TEMP aw button changes the humidifying hose length You may set the hose length to 6 levels E r ae Be BF Be 38 498 60 88 iB 5 Hold MODE button for more than 2 seconds The display changes to PL Pipe check mode Pipe check mode Hose length check 6 Press MODE button again to activate the pipe check mode 7 Press TEMP aw button and select the hose length Beep sound indicate that the setting of the remote controller accords or disaccord with the unit e accord a long beep e disaccord a short beep If you set the wrong humidifying hose length press CANCEL button The display returns to step 4 Reset the hose length 8 Hold MODE button for more than 5 seconds The humidifying hose length setting is complete and the display returns to normal 2 When the unit cannot be powered on When setting the humidifying hose length without powering on the unit the indoor unit does not receive the information at step 3 and 5 shown above However the remote controller stores the humidifying hose length information When the customer uses the unit the humidifying hose length information is send to the indoor unit to be set 13 LCD Set point Cancel Set point long beep
74. The multi monitor lamp is yellow in a standby state e The unit in first selected priority operation in Room A will take precedence and the unit in Room B will go into a standby state Yellow When the humidity of Room A satisfies the preset condition HUMID HEAT operation in Room A will be switched to the unit in Room B automatically The result is shown in the illustration on the right e The humidification of Room A is finished and the unit in a standby state in Room B will go into HUMID HEAT operation When the humidity of Room A drops the unit in Room A will be switched HUMID HEAT operation and the unit in Room B will be switched HEAT operation automatically Because the unit in Room Ais first selected priority The result is shown in the illustration on the left EAE The indoor units in the rooms are in HUMID HEAT operation and FRESH AIR SUPPLY VENTILATION respectively Initial state of operation First selected priority e The unit in Room B in HEAT operation will be added ventilation while the unit in Room A is in HUMID HEAT operation The result is shown in the illustration on the right e The unit in first selected priority operation in Room A will take precedence The unit in Room B keeps HEAT operation and will go into a standby state for ventilation Yellow In case you will start ventilation the unit in Room B the HUMID HEAT operation of Room A have to be stopped
75. YES Short circuit or breakage between compressor s coil phases YES gt Replace the compressor Check No 16 Discharge pressure check Check No 03 Installation condition check R9449 146 Service Diagnosis SiBE12 908 Troubleshooting 2 31 Insufficient Gas Remote Controller Display Outdoor Unit LED Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes or a Ad 5 Gas shortage detection l Gas shortage is detected by checking the input current value and the compressor running frequency If the gas is short the input current is smaller than the normal value Gas shortage detection II Gas shortage is detected by checking the discharge temperature and the opening of the electronic expansion valve If the gas is short the discharge temperature tends to rise Gas shortage detection l 40 class The following conditions continue for 7 minutes Input current x input voltage lt 2111 256 x output frequency 361 W Output frequency gt 51 Hz 50 class The following conditions continue for 7 minutes Input current x input voltage lt 4628 256 x output frequency 608 W Output frequency gt 48 Hz Gas shortage detection II The following conditions continue for 80 seconds Target opening of the electronic expansion valve gt 450 pulse Discharge temperature gt 128
76. activated when the temperature drops below 53 C Supposed m Insufficient installation space Causes m Defective outdoor fan m Defective electronic expansion valve m Defective heat exchanger thermistor m Defective outdoor unit PCB m Defective stop valve 132 Service Diagnosis SiBE12 908 Troubleshooting Troubleshooting AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check No 02 Refer to P 162 Check No 03 Refer to P 163 Check installation space Check No 03 Installation condition check NG sis gt Change the position of air discharge grille Change installation position Clean the heat exchanger Check No 05 Outdoor fan system check NG Replace the fan motor Rectify connector and fan motor Check No 05 lead wire Refer to P 163 Check No 16 Discharge pressure check Check No 16 NG Refer to P 168 Replace the stop valve Z Check No 17 Check No 17 Electronic expansion valve check Refer to P 169 NG gt Replace the main body or coil of the electronic expansion valve OK Replace the outdoor unit PCB Check No 02 Heat exchanger thermistor check NG Replace the outdoor heat exchanger thermistor Replace the outdoor unit PCB R9852 Service Diagnosis 133 Troubleshooting SiBE12 908 2 23 Compressor Sensor System Abnormality nn
77. anges according to indoor unit location the speed of passersby temperature range etc e The sensor also mistakenly detects pets sunlight fluttering curtains and light reflected off of mirrors as passersby e NIGHT SET MODE page 19 will not go on during use of INTELLIGENT EYE operation NOTE m To combine COMFORT AIRFLOW operation and INTELLIGENT EYE operation e The air conditioner can go into operation with the COMFORT AIRFLOW and INTELLIGENT EYE functions combined The flaps adjust the airflow direction upward while in cooling operation and downward while in heating operation during which the sensor of the INTELLIGENT EYE is working to detect the movement of people When the sensor detects people the louvers will direct the airflow in such way that it will not be blown directly on them If there are no people the air conditioner will go into energy saving operation after 20 minutes A CAUTION Do not place large objects near the sensor Also keep heating units or humidifiers outside the sensor s detection area This sensor can detect undesirable objects e Do not hit or violently push the INTELLIGENT EYE sensor This can lead to damage and malfunction Installation Operation Manual 81 Operation Manual SiBE12 908 3 7 POWERFUL and OUTDOOR UNIT QUIET Operation POWERFUL and OUTDOOR UNIT QUIET Operation POWERFUL operation quickly maximizes the cooling heating effect in any operation mode You can ge
78. any operating vibration or noise after installed e In accordance with the foundation drawing in fix the unit securely by means of the foundation bolts Prepare four sets of M8 or M10 foundation bolts nuts and washers each which are available on the market e It is best to screw in the foundation bolts until their length are 20mm from the foundation surface Y p N ry Us Installation Operation Manual 59 Installation Manual SiBE12 908 Outdoor Unit Installation Guideline e Where a wall or other obstacle is in the path of outdoor unit s intake or exhaust airflow follow the installation guidelines below e For any of the below installation patterns the wall height on the exhaust side should be 1200mm or less Wall facing one side More than 50 More than 100 1200 or less Side view Walls facing two sides j More than 150 gt More than 100 f More than 50 More than 50 Top view Walls facing three sides Y More than 150 More than 50 tL More than 300 ddd Top view unit mm Selecting a Location for Installation of the Indoor Units e The maximum allowable length of refrigerant piping and the maximum allowable height difference between the outdoor and indoor units are listed below The shorter the refrigerant piping the better the performance Connect so that the piping is as short as possibl
79. art of the operation or ending the defrosting Conditions for Canceling Defrost The judgment must be made with heat exchanger temperature 40 class 4 C 12 C 50 class A C 15 C Frequenc PI control J 0 Hz 60 sec 120 sec 530 sec 30 sec gt gt ON Compressor OFF ON Four way valve OFF 5 sec 5 sec ON Fan OFF 120 sec Operating room 450 pulse 40 class 350 pulse 350 pulse 450 pulse electronic expansion 50 class 300 pulse Initial opening valve opening Operation stopped room electronic expansion valve opening 140 pulse 40 class 160 pulse 50 class 200 pulse Initial opening 0 pulse R7163 36 Function and Control SiBE12 908 Control Specification 3 12 Electronic Expansion Valve Control Outline The following items are included in the electronic expansion valve control Electronic expansion valve is fully closed 1 Electronic expansion valve is fully closed when turning on the power 2 Pressure equalizing control Room Distribution Control 1 2 Gas pipe isothermal control Liquid pipe temperature control with all ports connected and all rooms being air conditioned SC control Open Control NOoaR WN Electronic expansion valve control when starting operation Control when frequency changed Control for defrosting Oil recover control Control when a discharge pipe temperature is abnormally high Control when the discharge pipe thermi
80. at room When the gas pipe temperature lt the average gas pipe temperature close the electronic expansion valve in that room 3 12 5 SC Control Outline Detect the temperature of liquid pipe and heat exchanger of the rooms and compensate the electronic expansion valve opening so that the SC of each room becomes the target SC When the actual SC is gt target SC open the electronic expansion valve of the room When the actual SC is lt target SC close the electronic expansion valve of the room Detail Start Functioning Conditions After finishing the open control 630 seconds after the beginning of the operation control all the electronic expansion valve in the operating room Determine Electronic Expansion Valve Opening Adjust the electronic expansion valve so that the temperature difference between the maximum heat exchanger temperature of connected room and the temperature of liquid pipe thermistor becomes constant 3 12 6 Starting Operation Changing Operating Room Control Control the electronic expansion valve opening when the system is starting or the operating room is changed and prevent the system to be super heated or moistened 3 12 7 Disconnection of the Discharge Pipe Thermistor Outline Detect a disconnected discharge pipe thermistor by comparing the discharge pipe temperature with the condensation temperature If any is disconnected open the electronic expansion valve according to the outdoor air temperat
81. at the maximum bending radius will not exceed 90 4 Check that the overall length of the humidifying hoses is definitely 3m or more 5 Attach a cover to the end of each humidifying hose so that no moisture or foreign substance will go into the hose when leaving the hose without being connected to the outdoor and Outdoor J indoor units Z CAUTION e Make sure that the number of bending times will not exceed the following limits at the time of installation 3m 8m 3 times 8 1m 10m_ 4 times 10 1m 15m 5 times e Use the KPMH996A15S 15m set only if the overall length of the humidifying hoses exceeds 10m Humidifying hose lt Indoor unit gt Connect the hose according to the instructions on page 12 of this manual a lt Outdoor unit gt LL E Connecting KPMH996A10S 10m set 1 Be sure to connect the 8m hose to the indoor unit and the 2m hose to the outdoor unit respectively and join the 2 hoses with the joint Q Joint Indoor unit Outdoor unit Co MI Sey 2m 38m e Cut the 8m hose to adjust the overall length of the humidifying hoses 11 SS Connect the humidifying hose according to the installation manual for the indoor unit Mark the cuff on the indoor unit side so that the overall length of the hoses after adjustment will be clearly known
82. ation Manual 3 4 HUMID HEAT Operation HUMID HEAT Operation This function enables the humidification of a room where the air conditioner is in HEAT operation thus providing appropriate humidity to the room if the function is used in wintertime during which the air is dry pain When the humidity of the room is high the user will feel warm enough even if the set temperature is dropped E To start HUMID HEAT operation 1 Press MODE selector button and select a Heat mode Select HUM TEMP gt mal 2 CI 2 3 9 7 AUTO DRY COOL HEAT FAN 1 mE Kiem CE POWERFUL COMFORT SWING FAN e ONOFF 4 ite ale 2s e 3 is displayed on the LCD lt a al e The multi monitor lamp will be red BACK a NEXT 2 Press HUMIDIFY VENTILATE button and select a o Con Humidity settings CANCEL The multi monitor lamp will be orange EY e Each press of the button advances the humidity settings in sequence Remote controller J LCD Humidity settings Multi monitor lamp a ea 6 CONT Continuous Ww 6 Hi High y Orange 1Yellow OsTD Standard ae ae 6 Low Low HUMID HEAT operation OFF OFF gt Refer to FRESH AIR SUPPLY Red 1Yellow a VENTILATION page 14 Ww a FRESH AIR SUPPLY Rei o VENTILATION OFF 1 When the unit canno
83. branch the power for the drain pump etc from the terminal block Doing so may cause electric shock or fire 3 Be sure to install an earth leakage breaker One that can handle higher harmonics This unit uses an inverter which means that it must be used an earth leakage breaker capable handling harmonics in order to prevent malfunctioning of the earth leakage breaker itself 4 Use an all pole disconnection type breaker with at least 3mm between the contact point gaps e Do not turn ON the safety breaker until all work is completed 1 Strip the insulation from the wire 20mm 2 Connect the connection wires between the indoor and outdoor units so that the terminal numbers match Tighten the terminal screws securely We recommend a flathead screwdriver be used to tighten the screws The screws are packed with the terminal board A CAUTION 1 In case using stranded wires is unavoidable for some reason make sure to install the round crimp style terminals on the tip Place the round crimp style terminals on the wires up covered part and secure in place 2 When connecting the connection wires to the terminal board using a single core wire be sure to perform curling Problems with the work may cause heat and fires Room Room A B Indoor unit Lo as 2 2 1 Outdoor unit Use 2 0mm diameter wires Be sure to use the dedicated circuits Safet
84. breaker ON the breaker for the power supply Do the other electric YES appliances work Power failure Wait till the power failure restored Is the supply voltage appropriate Connect properly to the power supply check varistor and fuse Is the supply voltage within the rated voltage 10 gt Ask electric power company YES Does the fuse or the temperature fuse blow gt Replace the fuse or the temperature fuse Within 3 minutes after YES operation stopped gt Standby for 3 min Operation will start 3 min after Is the wire connection and the wire size correct NO gt Reconnect wires properly Is the indoor unit NO compatible with the gt Arrange for a correct outdoor unit combination x Infrared ray checker t YES Part No 999146T Make sure that the infrared ray is radiated from remote controller infrared ray checker gt Check the batteries in the remote controller Is there a sound indicating that a signal from the remote controller is received Does the address of the remote controller match with that of the indoor unit NO Match the address YES 1 Continued to the next page R9681 Service Diagnosis 103 Troubleshooting SiBE12 908 Continued from the previous page Operation lamp flashes _ Is an
85. button and select a OFF e The unit in first selected priority operation in Room A will take precedence and the unit in Room B will go into a standby state Yellow In case you will start ventilation the unit in Room B the ventilation of Room A have to be stopped The result is shown in the illustration on the right e Fresh air is taken from outdoor through the outdoor unit e The outdoor noise and odor may be captured because the outdoor air is taken into the room The operation noise is slightly louder e When the outdoor temperature is higher than room temperature the airflow rate of FRESH AIR SUPPLY VENTILATION will be low e After the ventilation of Room A is stopped the unit in Room B will go into ventilation operation Installation Operation Manual 79 Operation Manual SiBE12 908 3 6 COMFORT AIRFLOW and INTELLIGENT EYE Operation COMFORT AIRFLOW and INTELLIGENT EYE Operation J DAIKIN FAN e ON OFF 4 HUM TEMP SECON RIE SENSOR CS cory n SELECT v 9 NOTE 1 2 The INTELLIGENT EYE incorporates infrared sensors to detect the presence of people in the conditioned room When these sensors detect people the louvers will adjust the airflow direction to an area where people are not present When there are no people in the sensing areas the air conditioner will go into energy saving mode
86. ck No 03 Installation condition check gt Clean up the radiation fin R9448 Refer to 1 3 Application of Silicon grease to a power transistor and a diode bridge on P xxx 144 Service Diagnosis SiBE12 908 Troubleshooting 2 30 Output Overcurrent Remote Controller Display Outdoor Unit LED Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Ad 5 An output overcurrent is detected by checking the current that flows in the inverter DC section A position signal error occurs while the compressor is running A speed error occurs while the compressor is running The machine shuts down when the signal of output overcurrent is sent 8 times from the output overcurrent detection circuit to the microcomputer Clear condition The machine continuously runs for about 11 min without fault Overcurrent due to defective power transistor Overcurrent due to wrong internal wiring Overcurrent due to abnormal supply voltage Overcurrent due to defective PCB Detection error due to defective PCB Overcurrent due to closed stop valve Overcurrent due to defective compressor Overcurrent due to poor installation condition Service Diagnosis 145 Troubleshooting SiBE12 908 Troubleshooting Check No 03 Refer to P 163 Check No 14 Refer to P 166 Check No 15 Refer to P 167 Check No 16 Refer to P 168 AN Be sure to turn off power
87. control Calculate a total of the AD value in each sampling time 20 seconds and adjust the frequency according to its difference from the frequency previously calculated 2 control If the operating frequency is not change more than a certain fixed time adjust the frequency up and down according to the ZAD value obtaining the fixed XAD value When the ZAD value is small lower the frequency When the XAD value is large increase the frequency 3 Limit of frequency variation width When the difference between input current and input current drooping value is less than 1 A the frequency increase width must be limited 4 Frequency management when other controls are functioning When each frequency is drooping Frequency management is carried out only when the frequency droops For limiting lower limit Frequency management is carried out only when the frequency rises 5 Upper and lower limit of frequency by PI control The frequency upper and lower limits are set depending on the total of S values of operating room When low noise commands come from the indoor unit more than one room or when outdoor unit low noise or quiet commands come from all the rooms the upper limit frequency must be lowered than the usual setting 30 Function and Control SiBE12 908 Control Specification 3 4 Controls at Mode Changing Start up 3 4 1 Preheating Operation Outline Operate the inverter in the open phase operation with the cond
88. ction of harness connector between fan motor and PCB m The fan does not rotate because it gets caught in foreign matter Troubleshooting AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check No 23 Is the connector of YES Refer to P 170 the fan motor gt Turn off the power supply disconnected then insert the connector Is there any foreign YES matter around the fan gt Remove them Try to operate Check No 23 Check the outdoor unit PCB for rpm command pulse input Is the pulse input Wo gt Replace the outdoor fan motor gt Replace the outdoor unit PCB R9440 128 Service Diagnosis SiBE12 908 Troubleshooting 2 20 Input Overcurrent Detection Remote Coniroller Display Outdoor Unit LED Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes rm a A Ad 5 Detect an input overcurrent by checking the inverter power consumption or the input current detected by CT with the compressor running m When A or more of CT input continues for 2 5 sec m The compressor stops if the error occurs and restarts automatically after 3 minutes standby A 40 class 11 0A 50 class 12 5A Overcurrent due to defective compressor Overcurrent due to defective power transistor Overcurrent due to de
89. d must surface must be evenly flared in be flaw free a perfect circle Make sure that the flare nut is fitted WARNING 1 Do not use mineral oil on flared part 2 Prevent mineral oil from getting into the system as this would reduce the lifetime of the units 3 Never use piping which has been used for previous installations Only use parts which are delivered with the unit 4 Do never install a drier to this R410A unit in order to guarantee its lifetime 5 The drying material may dissolve and damage the system 6 Incomplete flaring may cause refrigerant gas leakage Installation Operation Manual 49 Installation Manual SiBE12 908 Refrigerant Piping Work 2 Refrigerant piping A CAUTION 1 Use the flare nut fixed to the main unit To prevent cracking of the flare nut by aged deterioration 2 To prevent gas leakage apply refrigeration oil only to the inner surface of the flare Use refrigeration oil for R410A 3 Use torque wrenches when tightening the flare nuts to prevent damage to the flare nuts and gas leakage Align the centres of both flares and tighten the flare nuts 3 or 4 turns by hand Then tighten them fully with the torque wrenches Apply oil Do not apply refrigeration oil to the outer surface Apply refrigeration oil to the inner surface of the Tighten Torque wrench flare Flare nut Spanner Piping union Do not apply refrigeration Flare nut
90. d outdoor unit airflow rate are increased 3 15 2 Voltage Detection Function Power supply voltage is detected each time equipment operation starts Function and Control 43 Control Specification SiBE12 908 44 Function and Control SiBE12 908 Part 5 Installation Operation Manual T Installation ManhWal scsssisscssiceiecsesarcatts e r a EERE 46 d indoor UNIS aiseee na t a E E N E 46 1 2 lt O fdoor UNIS a e a e E A REA A E 58 2 System Conig ratio Nassir eera a a E ERE 70 3 Operation Manual eeseeeeeeeennnnnnertrterrtrrteeeeeeeeertttttttrnnnnnn nnn nnnnnnnnnnne eee 71 Sik Names of PONS rcatatdesa tok Aerie ita teacee areata s 71 3 2 AUTO DRY COOL HEAT FAN Operation ceeeeeeeteeeeeeeee 73 3 3 Adjusting the Airflow Direction eeeeeessneeeeeeeeeeeseneeeeeeeeeeeeeneeeaaaes 75 3 4 HUMID HEAT Operation iccictisiceccsccdsceseesstiesseieisieladecidcigndsdl eebeecelegieente 77 3 5 FRESH AIR SUPPLY VENTILATION sc co cated ae aon hence eels 79 3 6 COMFORT AIRFLOW and INTELLIGENT EYE Operation 20 80 3 7 POWERFUL and OUTDOOR UNIT QUIET Operation 0 ee 82 3 8 ECONO Operation nre ie Sess ona ia a E oan ati aaa arte 83 3 9 TIMER Operation edin ate ree ie ee eet eee 84 3 10 WEEKLY TIMER Operation 0 ccccceeeeesceeeeeeeeeeeeeeeeeeeeeenaaeeeeeneseaeeeenees 86 3 11 Note for Multi System anaccsanordiaceocwunntteen mace enee 91 Installation Operation Manual 45 Instal
91. decreases in the room of the Unit 1 the Unit 2 will go into standby mode then the Unit 1 will start HUMID HEAT operation again Carry out priority room setting to prevent the room of HUMID HEAT operation from switching automatically How to carry out priority room setting Cut the jumper of the outdoor unit PCB Cut the JP9 gt Room A will be set as the priority room Cut the JP10 Room B will be set as the priority room aU im pe th n g joga EE a ee Oy aera jlin en of pol ae aoo000000 000 gt Oo JP9 JP10 R9428 28 Function and Control SiBE12 908 Control Specification 3 3 Frequency Control Outline Frequency that corresponds to each room s capacity will be determined according to the difference in the temperature of each room and the temperature that is set by the remote controller The function is explained as follows 1 How to determine frequency 2 Frequency command from an indoor unit The difference between a room temperature and the temperature set by the remote controller 3 Frequency command from an indoor unit The ranked capacity of the operating room 4 Frequency initial s
92. ding to the operation mode with humidifying operation ventilation settings Refer to the following examples 1 through 4 Neither one of the indoor units cannot go into humidifying operation ventilation while the indoor units are in a standby state Refer to the information on selecting operation mode 1 When the indoor units in both 2 rooms are set to HUMID HEAT operation 1 Priority will be given to the indoor unit in the first selected room and the indoor unit will go into humidifying operation while the indoor unit in the second selected room will go into a humidifying operation standby state The multi monitor indicator will be lit yellow in approx 20 seconds 2 When the humidity of the first selected room reaches a target level the indoor unit will go into a humidifying operation standby state Then the indoor unit in the other room will go into HUMID HEAT operation automatically 3 When the humidity of the first selected room drops the indoor unit of the room will return to HUMID HEAT operation At that time the indoor unit in the second selected room will go into a humidifying operation standby state e When the indoor unit in the first selected room is in CONT humidifying the indoor unit of the second selected room will not switch automatically 2 When the indoor unit in the first selected room is in HUMID HEAT operation and the indoor unit in the second selected room is in FRESH AIR SUPPLY VENTILATION 1 When the HUMID
93. e YES gt Change the position of the air discharge grille or the installation location YE Is the heat exchanger S Clean the heat exchanger very dirty NO Is the airflow blocked by YES obstacles or winds gt Change the installation blowing in the opposite location or direction direction NO gt Check the outside air temperature temperature of air taken in by the outdoor unit The outside air temperature shall be 43 C or lower R9459 3 4 Outdoor Fan System Check DC Motor Check No 05 Outdoor fan system check Check No 23 Refer to P 170 Does the outdoor fan i rotate or o ai The outdoor fan system is OK To Check No 23 R9460 Service Diagnosis 163 Check SiBE12 908 3 5 Power Supply Waveform Check Check No 08 Check the voltage waveform between power supply terminals on the terminal board for disturbance using oscillo tester m Check to see if the power supply waveform is a sine wave Fig 1 m Check to see if there is waveform disturbance near the zero cross sections circled in Fig 2 Fig 1 Fig 2 R1444 R1736 3 6 Main Circuit Electrolytic Capacitor Check Check No 11 m Do not touch the live parts within 10 min after the breaker is turned off m Even after that when you touch the parts check that there is no DC voltage with a tester m Check the conductivity with a tester It is OK if the
94. e Shortest allow able length per room is 3m Piping to each indoor unit ROOM A B 15m max Total length of piping between all units 30m max Indoor Unit S 18 Outdoor Unit Level difference 15m max Level difference 7 5m max If the outdoor unit is positioned higher than the indoor units Level difference 15m max mi l Outdoor Unit Indoor Unit Level difference 7 5m max If the outdoor unit is positioned otherwise If lower than one or more indoor units 60 Installation Operation Manual SiBE12 908 Installation Manual Refrigerant Piping Work 1 Installing outdoor unit 1 When installing the outdoor unit refer to Precautions for Selecting the Location on page 2 and the Outdoor Unit Installation Drawings on page 3 2 If drain work is necessary follow the procedures below 2 Drain work 1 Use drain plug for drainage 2 If the drain port is covered by a mounting base or floor surface place additional foot bases of at least 30mm in height under the outdoor unit s feet 8 In cold areas do not use a drain hose with the outdoor unit Otherwise drain water may freeze impairing heating performance 3 Refrigerant piping A CAUTION es Drain water hole an Bottom frame R Drain plug Hose available commercially inner dia 16mm
95. e pins 4 3 Check rotation command voltage output pins 4 2 Check rotation pulse input pins 4 1 Upper fan connector Motor power supply voltage Unused Unused P OV reference potential Motor control voltage 15 VDC Rotation command voltage 1 5 VDC Rotation pulse input NWORUON OO0O00000 R6940 Service Diagnosis 161 Check SiBE12 908 3 2 Thermistor Resistance Check Check No 02 Remove the connectors of the thermistors on the PCB and measure the resistance of each thermistor using tester The relationship between normal temperature and resistance is shown in the graph and the table below Thermistor R25 C 20kQ B 3950 Temperature C 20 211 0 kQ 15 150 10 116 5 5 88 0 67 2 5 51 9 10 40 15 31 8 20 25 25 20 30 16 35 13 40 10 6 45 8 7 50 7 2 i 0 30 45 c R1437 E For the models in which the thermistor is directly mounted on the PCB RTH1 Tester R3460 162 Service Diagnosis SiBE12 908 Check 3 3 Installation Condition Check Check No 03 Installation condition check Abnormal dimensions of the air Change the position of the air suction and discharge discharge grille or the installation location Normal discharged air from other outdoor unit cause an increase of the suction air temperatur
96. e supply voltage is not within rated voltage 10 The size of connecting wire is thin indoor power supply unit Air is mixed over filling Damaged outdoor unit PCB short circuit Supposed Causes Service Diagnosis 107 Troubleshooting SiBE12 908 Troubleshooting Check No 29 Refer to P 171 Installation A Caution Power supply Is the capacity of NO Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Replace the safety breaker safety breaker as specified YES to a specified one Does the earth leakage breaker work NO gt Increase the set value of the earth leakage current on the breaker or replace the breaker Is it an exclusive circuit NO Is the size of wire for gt Use the exclusive circuit the exclusive circuit as specified NO Is the supply voltage Replace the wire to a specified one by referring to the electric wire distance described in the installation manual within the rated voltage 10 YES Is there required NO gt Contact with an electric power company installation space Isn t it short circuited Is the size of the connecting wire as specified YES Check No 29 Short circuit check Is it OK NO YES Y Air is mixed in Overfilling of refrigerant is supposed
97. e tape ends of inter unit wiring 3 Press the bottom frame of the indoor unit with both hands to advances bind Fight WIN set it on the mounting plate hooks Make sure the wires do not insulating tape catch on the edge of the indoor unit Mounting plate Inter unit wiring 4 Humidifying hose installation work A CAUTION e Be sure to use humidifying hose sold as optional accessory KPMH996A10S 10m set KPMH996A15S 15m set 1 The length of the humidifying hose needs to be set to ensure humidifying capacity Cut off any excess hose Use the remote controller to set the hose length Refer to page 13 e Attach a cover to the end of each humidifying hose so that no moisture or foreign substance will go into the hose when leaving the hose without being connected to the outdoor and indoor units e When laying the humidifying hose inside the wall block the ends of the humidifying hose with tape or the like to prevent water or anything else from entering it until it is connected to the indoor unit and outdoor unit ducts e Do not bend the humidifying hose more than 90 e Use caution not to deform the cuff while installing the humidifying hose 4 1 Connecting to the indoor unit e Connect the cuff side of the humidifying hose to the indoor unit duct e Use the humidifying hose of suitable length as shown below 10m set the 8m hose 15m set the 2m hose e When connecting the humidifying hoses of the indoor and o
98. e the WEEKLY TIMER operation press the WEEKLY button again e If a reservation deactivated with WEEKLY button is activated once again the last reservation mode will be used E To delete reservations The individual reservation Refer to REUE page 22 When selecting desired mode at STEP 4 in setting mode select blank The reservation will be deleted The reservations for each day of the week e This function can be used for deleting reservations for each day of the week e It can be used while confirming or setting reservations 5 Press SELECT button to select the day of the week to be deleted 6 Hold the WEEKLY button for 5 seconds e The reservation of the selected day of the week will be deleted All reservations 7 Hold the WEEKLY button for 5 seconds e Be sure to direct the remote controller toward the indoor unit and check for a receiving tone e This operation is not effective while WEEKLY TIMER is being set e All reservations will be deleted 90 Installation Operation Manual SiBE12 908 Operation Manual 3 11 Note for Multi System Note for Multi System What is a Multi System This system has one outdoor unit connected to multiple indoor units E Selecting the operation mode 1 With the Priority Room Setting present but inactive or not present When more than one indoor unit is operating priority is given to the first unit that was turned
99. e the set temperature m Note on FAN operation e This mode is valid for fan only m Note on airflow rate setting e At smaller airflow rates the cooling heating effect is also smaller 74 Installation Operation Manual SiBE12 908 Operation Manual 3 3 Adjusting the Airflow Direction Adjusting the Airflow Direction J DAIKIN FAN e ON OFF a HUM TEMP C 2 Ir MODE Suw e 1 2 POWERFUL COMFORT SWING vita aie e 3 4 QUIET SENSOR WEEKLY _ lt COPY BACK a NEXT SELECT OFF Y ON CANCEL EY You can adjust the airflow direction to increase your comfort Adjusting the upper and lower airflow direction E To adjust the flaps horizontal blades 1 Press SWING amp button ew is displayed on the LCD and the flaps will begin to swing 2 When the flaps have reached the desired position press SWING CS button once more The flaps will stop moving ne disappears from the LCD Adjusting the right and left airflow direction E To adjust the louvers vertical blades 3 Press SWING 4m5 button e ZIN is displayed on the LCD 4 When the louvers have reached the desired position press the SWING 4m button once more e The louvers will stop moving EY MNS disappears from the LCD Installation Operation Manual
100. eMts secneceisc cect iieeciee antes hee etieetieeeie 145 2 31 Insu fficiem GaS eree eae E ee apes A a Eaa E soa 147 2 32 Over Voltage Protection Low Voltage Protection ccceeeeeeees 149 2 33 Outdoor Unit PCB Abnormality or Communication Circuit Abnormality ceceeeeeeeeeeeeeeeeeeneeeeeeenaaeeees 150 2 34 Signal Transmission Error on Outdoor Unit PCB cceeeeeteeeeees 153 2 35 Fan Motor System Abnormality Fan Lock ccccecceeceseeeeeeeseeeees 155 2 36 Heater Wire Abnormality ceccceeeeeeeeeeeeeeceee reese eeeeeeneeeeeeeneeneeseees 156 2 37 Humidification Fan Outlet Thermistor Abnormality Heater Temperature Abnormality eeeeeeeeeeeeeeeeeeeeeeeeenneaeeeeeeeeeeeae 158 Service Diagnosis 93 SiBE12 908 2 38 Lights out of Microcomputer Status LAMP cccceeeesssseeeeeeeeeeeeseeees 160 Check aene hts col AE ites evden A cic Gouna N N a a 161 3 1 Fan Motor Connector Output Check sssssseessserrrserrrnrerrrrressrrrrsrrrrn 161 3 2 Thermistor Resistance Check cccccccesececeeeeeeeesseeseeeeeeeeeeeesseneaaeess 162 3 3 Installation Condition CHECK ccccccccceeeessseceeeeeeeeeeeeseneeeeeeeeeeeeeseenaaes 163 3 4 Outdoor Fan System Check DC Motor ssssssssssseeesnerssserrnssrrereesrnne 163 3 5 Power Supply Waveform Check cccccceeeessceeeeeseeeeeeeeeaeeeeeeeenaeeeees 164 3 6 Main Circuit Electrolytic Capacitor Check c cceec
101. eeceeeeeeeneeeeeeeeeeeeeeneeees 123 2 15 Freeze up Protection in Other Rooms Unspecified Voltage between Indoor and Outdoor Units 0 0 0 2 ee ceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 124 2 16 Outdoor Unit POB ADNOrimallity osseiscccn ads ncencotene ecu teencavetienacedts 125 2 17 OL Activation Compressor Overload ccccceeeeeeeeeeeeeeeeeeeeeeesaeeees 126 2 18 Compressor LOCK iiss taape a tevin andi eet iaa 127 219 DC Fam LOCK ea n e aes Secete ley ht aia alate tied ea tasca al oh tects 128 2 20 Input Overcurrent Detection ccccceeeesseceeeeeneeeeeeeseaeeeeeesnaeeeeteneaeees 129 2 21 Discharge Pipe Temperature Control ccccccceeeeeeeeeeeeeeeeeeeeestaeeeees 131 2 22 High Pressure Control in Cooling cccceccceeeeeeceeeeeeeeneeeeeeeeeeeeeenaaeeees 132 2 23 Compressor Sensor System Abnormality 0 c ceeeceeeeeeeeeeeeeeeetneeees 134 2 24 Damper ADMOIMality secs c cdccecgededeccccieteeeaysatigeacececectaeesdee vandeeteeeaedgsees 135 2 25 Position Sensor Abnormality ccceeeeeeeeeeeeseeeeeeeeeeeeeeeesaeeeeeeesaaaeees 136 2 26 DC Voltage DC Current Sensor Abnormality cceeceeeeeeeeeeeeeeees 138 2 27 Thermistor or Related Abnormality Outdoor Unit cece 139 2 28 Abnormal Temperature in Electrical BOX ccccccccececceeeeeeeeeeeeeeeeees 141 2 29 Temperature Rise in Radiation Fin eceeeeeeeeeeeeeeeeeeeennneeeeeeeeeeeeenas 143 2 30 Output OVErCUn
102. eeeeeeeeeeeeeeeestneeeees 164 3 7 Refrigerant System Check ec cecesceceeeeeeeseeeeeeeeceeeeeeeeseeeeeseeeeeeseneeees 165 3 8 Inverter Checker Check veh icincseaceccisiscerssisd ed eecmnaisiinauiaedavaunents 166 3 9 Power Transistor CHECK osansnriie e i a 167 3 10 Discharge Pressure Check ccccccceeeeecceeeeeseeeeeeenseaeeeeeneeeeeeeenaaaeees 168 3 11 Electronic Expansion Valve Check cccccccceeeeeeeeeeeeeeeeeeneeeeessnaneeees 169 3 12 Rotating Pulse Input on Outdoor Unit PCB Check eeeeeeseeeeees 170 3 13 Main Circuit Short CHeCK csscccccccssssssseeeeeeeeeeesesseeeeeeeeeeeesssneaaeess 171 3 14 Four way Valve Performance Check ccccccccssssssseeeeeeeeeeeeeesssnsaaes 172 94 Service Diagnosis SiBE12 908 Service Check Function 1 Service Check Function 1 1 Failure Diagnosis with Multi Colored Indicator Lamp The multi colored indicator lamp on the display of the indoor unit flashes when any of the following failure is detected 1 When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions and the machine does not work 2 When a signal transmission error occurs between the indoor and outdoor units For detailed troubleshooting refer to the following pages Troubleshooting P 100 Multi colored indicator lamp MULTI Nn eo R9419 Service Diag
103. emperature The system sets a target discharge temperature according to the outdoor and indoor heat exchanger temperature and controls the electronic expansion valve opening so that the target discharge temperature can be obtained The outdoor heat exchanger thermistor is used for detecting disconnection of the discharge thermistor when cooling When the discharge pipe temperature becomes lower than the outdoor heat exchanger temperature the discharge pipe thermistor is judged as disconnected The outdoor heat exchanger thermistor is used for high pressure protection during cooling operation The discharge pipe thermistor is used for controlling temperature of the discharge pipe If the temperature of discharge pipe used in place of the inner temperature of the compressor rises abnormally the operating frequency drops or the operation halts The discharge pipe thermistor is used for detecting disconnection of the discharge thermistor In cooling the gas pipe thermistors are used for gas pipe isothermal control The system controls electronic expansion valve opening so that gas pipe temperature in each room becomes equal Function and Control 25 Function of Thermistor SiBE12 908 D Indoor Heat Exchanger Thermistor 1 The indoor heat exchanger thermistors are used for controlling target discharge temperature The system sets a target discharge pipe temperature according to the outdoor and
104. ency limit will be cancelled Limitation of current drooping and stop value according to the outdoor air temperature 1 In case the operation mode is cooling The current droops when outdoor air temperature becomes higher than a certain level model by model 2 Incase the operation mode is heating only for heat pump model The current droops when outdoor air temperature becomes higher than a certain level model by model Function and Control 33 Control Specification SiBE12 908 3 7 Freeze up Protection Control Outline During cooling operation the signals being sent from the indoor unit allow the operating frequency limitation and then prevent freezing of the indoor heat exchanger The signal from the indoor unit must be divided into the zones as the followings Detail Conditions for Start Controlling Judge the controlling start with the indoor heat exchanger temperature after 2 sec from operation start and after 30 sec from changing number of operation room Control in Each Zone Reference 7C Up zone 5C Keep zone 3C Drooping zone oC Stop zone 3 8 Heating Peak cut Control Reset zone Heat exchanger thermistor temperature Return from stop R4561 Outline During heating operation the signals being sent from the indoor unit allow the operating frequency limitation and prevent abnormal high pressure The signal from the indoor unit must be divided as follows
105. eople are detected in the areas Use the INTELLIGENT EYE operation in The wind direction may differ from the combination with the COMFORT AIRFLOW illustrated direction depending on the actions operation and movements of the people in the areas e While the air conditioner is in INTELLIGENT EYE operation the louvers will adjust the airflow direction If there are people in the sensing areas of the INTELLIGENT EYE the louvers are controlled and airflow direction will be leftward or rightward so that the airflow will not be directed to the people If no people are detected in either area 1 or 2 in 20 minutes the air conditioner will go into energy saving mode with the set temperature shifted by 2 C The INTELLIGENT EYE sensor may not detect the people depending on the clothes they are wearing if there are no movements of them in the areas e The airflow direction will be leftward if there are people in both areas 1 and 2 or if there is a person right in front of the sensor e Because of the position of the sensor people might be exposed to the airflow of the indoor unit if they are close to the border between areas 1 and 2 If there are people close to the border between areas or in both areas it is recommended to use the COMFORT AIRFLOW and INTELLIGENT EYE functions simultaneously When both of them are in use flaps and louvers are controlled and the indoor unit will not direct the airflow towards the people e Sensor detection sensitivity ch
106. er turned off 5 C and this condition continues for 30 min Conditions Supposed m Breakage of heater filament Causes m Breakage of heater harness m Abnormal temperature detected by outdoor temperature thermistor m Abnormal temperature detected by humidification fan outlet thermistor m Damaged main relay m Blown thermal fuse m Damaged heater control part m Extremely low voltage 156 Service Diagnosis SiBE12 908 Troubleshooting Troubleshooting Check No 02 or parts damage may be occurred Is the supply voltage NO AN Be sure to turn off power switch before connect or disconnect connector Caution Refer to P 162 appropriate i YES Power supply OFF Is heater well cooled Measure resistance between heater connectors Is the heater NO Cool it down Modify supply voltage resistance appropriate At normal temperature 61 0043 Is thermal fuse blown YES Replace heater unit Check No 02 Is a resistance of thermal thermistor at NO gt Replace heater unit humidification fan outlet appropriate gt Replace the thermistor For details refer to 7 troubleshooting gt Replace indoor control PCB A1P Main relay could be damaged When the main relay MRM10 is damaged heater rotor and dehumidification fan do not run R9456 Service Diagnosis 157 Troubleshoot
107. etting 0 5 C Temperature setting Operation stops at the set hours Ni g ht Set Circuit ON temperature shift 1 Temperature R4421 Heating Operation Thermostat l setting F 1 i Timer operation 1 hour later Night Set Circuit ON R1362 20 Function and Control SiBE12 908 Main Functions 1 13 Other Functions 1 13 1 Multi Colored Indicator Lamp Features Current operation mode is displayed in color of the lamp of the indoor unit which changes in 6 colors Operating status can be monitored even in automatic operation in accordance with the content of actual operation MULTI MONITOR Multi colored indicator lamp amp C R9426 The lamp color changes according to the operation Heating ez s esesciielindi vivid ecimeticincesss Red HUMID HEAT ccceesesceeseeeseeeseeeseeeeees Orange Cooling isaning roi Blue ODRY sak anneal Green OFAN wai eine ieee White The lamp color also changes according to the optional function FRESH AIR SUPPLY VENTILATION White Only for the first 2 seconds during operation of the air conditioner Standby state ex mode conflict Yellow 1 13 2 WEEKLY TIMER Operation Up to 4 timer settings can be saved for each day of the week up to 28 settings in total Those 3 items of ON OFF temperature and time can be set Refer to WEEKLY TIMER Operation on pa
108. etting 5 Pl control Frequency changes by PI control lt repeats when frequency becomes lower Command frequency X repeats when frequency becomes lower Each drooping function Input current control etc Upper limit frequency Each upper limit function FMAX lt Compressor protection function Command frequency Limit frequency Skip control Target frequency Initial frequency Lower limit frequency Each lower limit function PI control FMIN Four way valve operating compensation etc Defrost control only for heat pump model R1375 Detail How to Determine Frequency The compressor frequency will finally be determined by taking the following steps For Heat Pump Model 1 Determine command frequency Command frequency will be determined in the following order of priority 1 1 Limiting frequency by drooping function Input current discharge pipes low Hz high pressure limit peak cutting freeze prevention dew prevention fin thermistor temperature 1 2 Limiting defrost control time 1 3 Forced cooling 1 4 Indoor frequency command 2 Determine upper limit frequency Seta minimum value as an upper limit frequency among the frequency upper limits of the following functions Compressor protection input current discharge pipes Low Hz high pressure peak cutting freeze prevention defrost 3 Determine lower limit frequency Set a maximum value as an lower limit frequency among the frequency lower limits of the foll
109. fective electrolytic capacitor of inverter main circuit Overcurrent due to defective outdoor unit PCB Detection error due to defective outdoor unit PCB Overcurrent due to short circuit Service Diagnosis 129 Troubleshooting SiBE12 908 Troubleshooting Check No 03 Refer to P 163 Check No 11 Refer to P 164 Check No 14 Refer to P 166 Check No 16 Refer to P 168 A Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Input over current may be caused by improper wiring inside the machine If the machine stops due to input over current after connecting or disconnecting wires to replace part check wiring for proper connection Get restarted and measure the input current Is the current value NO more than the set stop npu current Check No 11 Main circuit electrolytic capacitor check NO gt Replace the outdoor unit PCB YES Turn off the power supply and disconnect U V and W harnesses l Check No 14 Check the inverter by the inverter checker Is there any LED YES Replace electrolytic capacitor Inverter checker Part No 1225477 turned off Turn off the power supply replace the harnesses and restart the compressor after turning on the power supply again l Check No 16 Discharge pressure check Check No 03 Installation co
110. g Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred AY Caution Check the supply voltage Supply voltage as NO specified gt Correct the power supply Rotate fan by hand NO Does fan rotate smoothly gt Replace fan motor and outdoor unit PCB Precaution before turning on the power again Make sure the power has been off for at least 30 seconds YES Disturbance factors Noise Power supply distortion Check for such factors for a long term Try to get restarted a couple of times Turn on the power again System restarted Repeat a couple of times gt Replace the outdoor unit PCB R9451 Service Diagnosis 149 Troubleshooting SiBE12 908 2 33 Outdoor Unit PCB Abnormality or Communication Circuit Abnormality na 15 Remote Controller Display Outdoor Unit LED Ax 5 Display Method of Detect within the programme of the microcomputer that the programme is in good running Malfunction order Detection Malfunction 1 When the programme of the microcomputer is in bad running order Decision 2 When indoor outdoor unit signal transmission can not be performed for more than 15 sec Conditions 3 When zero cross signal can not be detected for more than 10 sec Supposed m Display disabled due to power supply fault Causes Communication circuit fault
111. g the ON OFF button for between 5 to 9 sec while the unit is not operating See page 42 for the detail of Forced Operation Mode When the ON OFF button is pressed for 10 sec or more the operation will be stopped 1 13 6 Titanium Apatite Photocatalytic Air Purifying Filter This filter combines the Air Purifying Filter and Titanium Apatite Photocatalytic Deodorizing Filter in a single highly effective unit The filter traps microscopic particles decompose odours and even deactivates bacteria and viruses It lasts for 3 years without replacement if washed about once every 6 months 1 13 7 Air Filter Prefilter The air filter net is impregnated with a safe odorless mold preventative to make the filter virtually immune to mold 1 13 8 Auto restart Function Even if a power failure including one for just a moment occurs during the operation the operation restarts in the condition before power failure automatically when power is restored Note It takes 3 minutes to restart the operation because the 3 minute standby function is activated 22 Function and Control SiBE12 908 Main Functions 1 14 Table for Special Modes Indoor ON OFF 5 9 sec i e Indoor ON OFF A Forced operation mode oo e Left for 15 min CANCEL 5 sec e CANCEL 5 sec Easy diagnosis mode e Left for 60 sec Mode selection view MODE Select with TEMP A or W button
112. ge 86 for detail 1 13 3 Hot Start Function In order to prevent the cold air blast that normally comes when heating is started the temperature of the heat exchanger of the indoor unit is detected and either the airflow is stopped or is made very weak thereby carrying out comfortable heating of the room The cold air blast is also prevented using a similar control when the defrosting operation is started or when the thermostat gets turned ON 1 13 4 Signal Receiving Sign When the indoor unit receives a signal from the remote controller the unit emits a signal receiving sound 1 13 5 ON OFF Button on Indoor Unit An ON OFF button is provided on the front panel of the unit Use this button when the remote controller is missing or if its battery has run out Every press of the button switches from ON to OFF or from OFF to ON MULTI MONITOR Ga er ON OFF button R9408 Function and Control 21 Main Functions SiBE12 908 ca Note m Push this button once to start operation Push once again to stop it m This button is useful when the remote controller is missing m The operation mode refers to the following table Mode Temperature setting Airflow rate Heat Pump AUTO 25T AUTO E Inthe case of multi system operation there are times when the unit does not activate with this button lt Forced operation mode gt Forced operation mode will be set by pressin
113. h Pressure Control Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes lt al i High pressure control During heating operations the temperature detected by the indoor heat exchanger thermistor is used for the high pressure control stop outdoor fan stop etc Freeze up protection control operation halt is activated during cooling operation according to the temperature detected by the indoor unit heat exchanger thermistor High pressure control During heating operations the temperature detected by the indoor heat exchanger thermistor is above 65 C Freeze up protection When the indoor unit heat exchanger temperature is below 0 C during cooling operation Operation halt due to clogged air filter of the indoor unit Operation halt due to dust accumulation on the indoor unit heat exchanger Operation halt due to short circuit Detection error due to faulty indoor unit heat exchanger thermistor Detection error due to faulty indoor unit PCB 114 Service Diagnosis SiBE12 908 Troubleshooting Troubleshooting AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check No 02 Refer to P 162 Check the air passage YES Is there any short circuit NO Check the intake air filter YES gt Provide sufficient air passage gt Clea
114. he 20 sec 40 Function and Control SiBE12 908 Control Specification 3 13 Malfunctions 3 13 1 Sensor Malfunction Detection Sensor malfunction may occur either in the thermistor or current transformer CT system Relating to Thermistor Malfunction Outdoor heat exchanger thermistor Discharge pipe thermistor Fin thermistor Gas pipe thermistor Outdoor air thermistor Liquid pipe thermistor Relating to CT Malfunction When the output frequency is more than 52 Hz and the input current is less than 1 25A carry out abnormal adjustment DARN 3 13 2 Detection of Overload and Overcurrent Outline Detail In order to protect the inverter detect an excessive output current and for protecting compressor monitor the OL operation E If the OL compressor head temperature exceeds 120 130 C depending on the model the compressor gets interrupted m If the inverter current exceeds 22 A the compressor gets interrupted too 3 13 3 Insufficient Gas Control Outline If a power consumption is below the specified value in which the frequency is higher than the specified frequency it must be regarded as gas insufficient In addition to such conventional function if the discharge temperature is higher than the target discharge pipe temperature and the electronic expansion valve is fully open 450 pulses more than the specified time it is considered as an insufficient gas Insufficient gas zone Power consu
115. he compressor frequency Details of the When POWERFUL button is pushed in each operation mode the fan speed setting Control temperature will be converted to the following states in a period of 20 minutes Operation mode Fan speed Remote controller set temperature COOL H tap 50 rpm 18 C DRY Dry rotating speed Normally targeted 50 rpm temperature in dry operation Approx 2 C HEAT H tap 50 rpm 30 C FAN H tap 50 rpm AUTO Same as cooling The target is kept heating in POWERFUL unchanged operation Ex POWERFUL operation in cooling mode Target temp Set temp 18 C 1 POWERFUL ON A a It counts 20 min also in the remote controller 1 T POWERFUL FF i i wees nee 1 Fan ee Fe eee 1 L Ending condition or in 1 to 3 1 50rpm 1 After the lapse of 20 minutes H tap PE Ane 2 2 Stop i i 3 POWERFUL operation is OFF Set tap We ce a rary De le ats cts Leal la tha a Mee Banat as a aa a E el cn hn lta J R4606 18 Function and Control SiBE12 908 Main Functions 1 11 ECONO Mode Outline The ECONO mode reduces the maximum operating current and power consumption by approx 30 during start up etc This mode is particularly convenient for energy saving oriented users It is also a major bonus for those whose breaker capacities do not allow the use of multiple electrical devices and air conditioners
116. he other room or FRESH AIR SUPPLY VENTILATION NO the each length of humidification hose exceed Exceeds gt Explain to the user that HUMID HEAT operation or FRESH AIR SUPPLY VENTILATION can not be performed simultaneously in the both 2 rooms gt Correct it within the the specified length Under specified length Does the set hose length It does not match specified length Explain it to the user match with the each field hose length It matches Blocked Is the humidification filter gt Reset the hose length by remote controller Clean the humidification blocked Not blocked Any breakage YES filter or blockage on humidification hose NO Is the humidification hose NO gt Repair breakage or remove blockage proper YES Does the outdoor unit suck the YES gt Use the proper hose specified by DAIKIN exhausted air again by short circuit NO How Many screens consecutives room gt Improve so as not to get short circuit many times are the room ventilated Small in number highly packed house or apartments Is the High llhole high ceili ceiling too high for igi wellhols high celling gt Explain to the user the floor size NO 1 Continued to the next page gt Explain to the user R9682
117. her amount of the heat exchange per unit m When the frequency decreases the rotation speed of the compressor decreases resulting in a decreased refrigerant circulation This leads to a lower amount of the heat exchange per unit Drawing of The following drawing shows a schematic view of the inverter principle Inverter Refrigerant circulation rate high high speed Amount of heat Amount of heat exchanged air large exchanged air large oO oO T kiep f Amount of heat T Amount of heat exchanged air small L exchanged air small low speed m freq 50 Hz v constant 60 Hz freq variable F Refrigerant circulation rate low R2812 2 Function and Control SiBE12 908 Main Functions Inverter Features E The inverter provides the following features The regulating capacity can be changed according to the changes in the outdoor air temperature and cooling heating load Quick heating and quick cooling The compressor rotational speed is increased when starting the heating or cooling This enables a quick set temperature Air discharge temperature PEd ASG eS ae oa _ inverter get a normal heat pump T T Start 60 120 300 seconds R1187 Even during extreme cold weather the high capacity is achieved It is maintained even when the outdoor air temperature is 2 C Comfortable air conditioning A detailed adjustment is i
118. hose ole OFF Approx 1min HUMID HEAT operation Humidifying fan and damper Hygroscopic fan Heater Rotor on Approx 3min ON OFF eee east ee TO O O 4t gt t 4 st a a a LI Le OFF ON j 115 sec us 1 i ON i i j Bymode a OFF ae I I R9412 a Humidifying time Approx 70min Decide time according to the outdoor temperature and hose length set by remote controller Drying time Approx 2 10min 6 Drying time Approx 2 10min Decide time according to the hose length set by remote controller Time chart for HUMID HEAT operation on trial mode HUMID HEAT operation on trial mode works in the same sequence as HUMID HEAT operation but about 30 min later it automatically stops m Remark When a room is spacious such as loft style or partitioned by accordion style curtain the ventilation volume is large and may not sometimes reach the set humidity Function and Control SiBE12 908 Main Functions Humidification performance by outdoor temperature Performance compensation by hose length The humidifying of this system is different from that of the normal humidifier Therefore the humidifying performance varies with the outdoor temperature or installation condition Sufficient humidifying capacity may not be attained depending on the weather condition in operation When the ou
119. hoses correctly according to the operation manual after the humidifying hoses are installed Note 2 Check that the connections of the humidifying hoses are correct Ventilation in room A tap H Go to room B and check that there is no air distribution sound from the indoor unit If air distribution sound is heard in room B interchange the humidifying hoses on the outdoor unit for rooms A and B m ATTENTION 1 Have the customer actually operate the unit while looking at the manual included with the indoor unit Instruct the customer how to operate the unit correctly particularly cleaning of the air filters operation procedures and temperature adjustment 2 Even when the air conditioner is not operating it consumes some electric power If the customer is not going to use the unit soon after it is installed turn OFF the breaker to avoid wasting electricity 3 If additional refrigerant has been charged because of long piping list the amount added on the nameplate on the reverse side of the stop valve cover 14 3P234246 1 Installation Operation Manual System Configuration SiBE12 908 2 System Configuration After the installation and test operation of the room air conditioner have been completed it should be operated and handled as described below Every user would like to know the correct method of operation of the room air conditioner to check if it is capable of cooling or heating well and to kn
120. ial operation mode You can select a mode for trial operation on the remote controller The operation continues for approx 30 minutes Refer to the installation manual on page 57 for detail 3 Pipe set mode You can set the humidifying hose length and then check the preset value Refer to the installation manual on page 56 for detail 4 Pipe check mode You can check the preset value of the humidifying hose length Refer to the installation manual on page 56 for detail 5 Drying mode Hose Dry operation is a forced drying operation for humidifying hose The operation continues for approx 30 minutes Cooling heating or dry operation is not available during Hose Dry operation Refer to the installation manual on page 57 for detail 6 Humidifying airflow rate setting mode Humidifying airflow rate setting mode allows to fine tune the speed of the humidifying fan around 10 relative to Automatic Set high to increase the airflow rate or set to low to decrease 7 Monitor brightness setting mode The brightness of the multi colored indicator lamp can be adjusted H high L low or OFF 24 Function and Control SiBE12 908 Function of Thermistor 2 Function of Thermistor 2 1 Heat Pump Model A Outdoor Heat Exchanger Thermistor B Discharge Pipe Thermistor C Gas Pipe Thermistor C R7042 Compressor The outdoor heat exchanger thermistor is used for controlling target discharge t
121. ide pipe ioint nominal diameter 13mm nominal diameter 13mm as a joint Installation Operation Manual 55 Installation Manual SiBE12 908 Setting the Humidifying Hose Length CAUTION If the humidifying hose length is not set or it is set incorrectly the humidifying capacity may diminish or strange sound may occur from humidifying hose 1 Setting the humidifying hose length WoDaiKin ON OFF ri Ser mH E r B T0 POWERFUL COMFORT 2 QUIET SENSOR WEEKLY CS COPY T v C a Fol A TEMP button B MODE selector button C CANCEL button Set the humidifying hose length to ensure humidifying capacity Use the remote controller to set the humidifying hose length When doing this power on the unit as communication is established between the unit and the remote controller Be sure to direct the remote controller toward the indoor unit while setting the humidifying hose length The humidifying hose length includes the rear of the indoor unit e Set the humidifying hose length according the following procedure after check the installed hose length Pipe set mode Hose length setting 1 Press MODE button and TEMP button 2 locations at the same time To cancel do not operate the button for 60 seconds The display will return to normal 2 Press TEMP avw button and select PG Pipe set mode 3 Press MODE button to activate the
122. indoor heat exchanger temperature and controls the electronic expansion valve opening so that the target discharge temperature can be obtained The indoor heat exchanger thermistor is used to prevent freezing During the cooling operation if the temperature drops abnormally the operating frequency becomes lower then the operation halts The indoor heat exchanger thermistor is used for anti icing control During the cooling operation if the heat exchanger temperature in the room where operation is halted becomes 1 C or if the room temperature heat exchanger temperature in the room where operation is halted becomes 210 C it is assumed as icing The indoor heat exchanger thermistor is used to heating peak cut control During heating operation if the temperature rises abnormally the operating frequency becomes lower then the operation halts During heating the indoor heat exchanger thermistors are used for detecting disconnection of the discharge pipe thermistor When the discharge pipe temperature become lower than an indoor heat exchanger temperature a disconnected discharge pipe thermistor can be detected The indoor heat exchanger thermistors are also used for preventing abnormal high pressure When only one indoor unit is operating the indoor heat exchanger thermistor is used for sub cooling control The actual sub cooling is calculated from the liquid pipe temperature and the heat exchanger temperature The system
123. ing SiBE12 908 2 37 Humidification Fan Outlet Thermistor Abnormality Heater Temperature Abnormality Remote Controller Display Outdoor Unit LED Display aie a Ad 5 Method of Detect short circuit and wire breakage of humidification thermistor Malfunction When humidification fan outlet temperature becomes high this condition is identified as an Detection abnormal heater temperature fault Malfunction When power is supplied and the thermistor input is 4 92 V or more or 0 06 V or less Decision If the humidification fan outlet temperature is more than 90 C this condition is identified as Conditions abnormal heater temperature fault Supposed m Short circuit and wire breakage of humidification thermistor Causes m Disconnected connector m Heater has a high power m Thermistor temperature detection error m Defective rotor motor m Defective hygroscopic fan motor m Defective heater control part m Defective humidification fan 158 Service Diagnosis SiBE12 908 Troubleshooting Troubleshooting Check No 02 Refer to P 162 No or parts damage may be occurred Check connector for proper connection AN Be sure to turn off power switch before connect or disconnect connector Caution Check No 05 Refer to P 163 YES Check No 02 Thermistor resistance check l NO Reconnect properly The humidification thermistor is exclusive for fan outlet
124. ing initial operation Room temperature gt Remote controller setting temperature Cooling operation Room temperature lt Remote controller setting temperature Heating operation Cooling Operation Set point 3 0 C SSS Set point 2 0 C A o Set point 2 0 C Thermostat OFF Thermostat OFF Set point 2 5 C Heating Operation R9417 Ex When the set point is 25 C Cooling Operation 23 C Thermostat OFF gt 22 C Switch to Heating Operation Heating Operation 27 C Thermostat OFF 28 C Switch to Cooling Operation Function and Control Main Functions SiBE12 908 1 4 Programme Dry Function Programme dry function removes humidity while preventing the room temperature from In Case of Inverter Units lowering Since the microcomputer controls both the temperature and airflow volume the temperature adjustment and fan adjustment buttons are inoperable in this mode The microcomputer automatically sets the temperature and fan settings The difference between the room temperature at startup and the temperature set by the microcomputer is divided into two zones Then the unit operates in the dry mode with an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level Room temperature at Set temperature X Thermostat OFF point Y Thermostat ON point Z a startup X 0 5 C i AO or
125. is insufficient it is recommended to use another heating appliance in combination with the air conditioner e The heat pump system heats the room by circulating hot air around all parts of the room After the start of heating operation it takes some time before the room gets warmer In heating operation frost may occur on the outdoor unit and lower the heating capacity In that case the system switches into defrosting operation to take away the frost e During defrosting operation hot air does not flow out of indoor unit A pinging sound may be heard during defrosting operation which however does not mean that the air conditioner has failures m Note on COOL operation e This air conditioner cools the room by blowing the hot air in the room outside so if the outside temperature is high the performance of the air conditioner drops m Note on DRY operation The computer chip works to rid the room of humidity while maintaining the temperature as much as possible It automatically controls temperature and airflow rate so manual adjustment of these functions is unavailable m Notes on AUTO operation e In AUTO operation the system selects a temperature setting and an appropriate operation mode COOL or HEAT based on the room temperature at the start of the operation e The system automatically reselects setting at a regular interval to bring the room temperature to user setting level e If you do not like AUTO operation manually chang
126. it In that case make sure that the centreline on the cuff of the hose coincides with V mark above the connecting port The F humidifying hose cover cannot be mounted unless Y mark coincides with the centreline 2 Mount the F humidifying hose cover Insert the 4 tabs of the cover as shown in the figure 3 Tighten the screw and secure the F humidifying hose cover and outdoor unit Connecting through the path above the humidifying hose cover 1 Cut out the knockout hole on the F humidifying hose cover 2 Insert the humidifying hose 2m into the knockout hole 3 Insert the humidifying hose into the humidifying duct on the back of the outdoor unit 4 Mount the F humidifying hose cover Insert the 4 tabs of the cover as shown in the figure 5 Tighten the screw and secure the F humidifying hose cover and outdoor unit lt Back side gt ROOM A ROOM 8 y bet Humiditying hose 2m Centreline Humidifying hose cover o Screw Humidifying hose cover a Installation Operation Manual 67 Installation Manual SiBE12 908 Wiring WARNING 1 Do not use tapped wires stranded wires CAUTION 1 extension cords or starburst connections as they may cause overheating electrical shock or fire 2 Do not use locally purchased electrical parts inside the product Do not
127. itions including the preheating command from the indoor the outdoor air temperature and discharge pipe temperature Detail Preheating ON Condition When outdoor air temperature is below 10 5 C and discharge pipe temperature is below 10 5 C inverter in open phase operation starts The power consumption of compressor during preheating operation is 35 W OFF Condition When outdoor air temperature is higher than 12 C or discharge pipe temperature is higher than 12 C inverter in open phase operation stops 3 4 2 Four Way Valve Switching Outline During the heating operation current must be conducted and during cooling and defrosting current must not be conducted In order to eliminate the switching sound as the four way valve coil switches from ON to OFF when the heating is stopped the delay switch of the four way valve must be carried out after the operation stopped Detail The OFF delay of four way valve Energize the coil for 150 sec after unit operation is stopped 3 4 3 Four Way Valve Operation Compensation Outline At the beginning of the operation as the four way valve is switched acquire the differential pressure required for activating the four way valve by having output the operating frequency which is more than a certain fixed frequency for a certain fixed time Detail Staring Conditions 1 When starting compressor for heating 2 When the operating mode changes from the previous time 3 When s
128. izing control Heating 1 room operation Y Open control when starting Control of discharge pipe thermistor disconnection Y Continue Y Stop Pressure equalizing control R9427 38 Function and Control SiBE12 908 Control Specification 3 12 1 Fully Closing with Power On Initialize the electronic expansion valve when turning on the power set the opening position and develop pressure equalizing 3 12 2 Pressure Equalization Control When the compressor is stopped open and close the electronic expansion valve and develop pressure equalization 3 12 3 Opening Limit Outline Limit a maximum and minimum opening of the electronic expansion valve in the operating room Detail A maximum electronic expansion valve opening in the operating room 450 pulses Aminimum electronic expansion valve opening in the operating room 60 pulses The electronic expansion valve is fully closed in the room where cooling is stopped and is opened with fixed opening during defrosting 3 12 4 Gas Pipe Isothermal Control During Cooling When the units are operating in multiple rooms detect the gas piping temperature and correct the electronic expansion valve opening so that the temperature of the gas pipe in each room becomes identical When the gas pipe temperature gt the average gas pipe temperature open the electronic expansion valve in th
129. l MQ 7 g several MQ Resistance in NG 0 or co 0 0 0 or co Service Diagnosis 171 Check SiBE12 908 3 14 Four way Valve Performance Check Check No 31 lt Caution on resetting the power supply gt Be sure to wait for 30 sec or more after turning off the power supply Turn off the power and turn it on again 80 voltage at NO DC 0 V with Replace the outdoor unit outdoor unit on PCB YES Four way valve coil Start the heating mode run Cooling dry No continuity Heating Continuity 80 voltage at DC 130 230 V for 3 sec after compressor starts and then at about DC 12 15V after that Fig 1 NO gt Replace the outdoor unit PCB YES Disconnect the four way valve coil from the connector and check the continuity Four way valve NO coil resistance at gt Replace the four way valve 300 600 2 coil YES gt Replace the four way valve Fig 1 Voltage at S80 DC180 280V 3 sec DC12 15V Compressor Time R9462 ON 172 Service Diagnosis
130. l Note Unless specified otherwise an indoor dry operation command must be regarded as cooling operation Decision of the In this multi system when both 2 indoor units are operating one of them may enter the standby operation mode mode by the following conditions The units in the 2 rooms are different in operation mode The indoor units in both 2 rooms are set to HUMID HEAT operation or FRESH AIR SUPPLY VENTILATION Refer to the following pages for detail Note for multi on page 91 HUMID HEAT operation on page 77 FRESH AIR SUPPLY VENTILATION on page 79 Function and Control 27 Control Specification SiBE12 908 3 2 Automatic switching for HUMID HEAT operation room Outline When the indoor units in both 2 rooms are set to HUMID HEAT operation priority will be given to the indoor unit starting operation first basically However priority will be given to the indoor unit starting operation subsequently under certain conditions Detail 1 When the indoor units in both 2 rooms are set to HUMID HEAT operation priority will be given to the indoor unit starting operation first Unit 1 and the indoor unit will go into humidifying operation while the indoor unit starting operation subsequently Unit 2 will go into standby mode 2 When the humidity of the Unit 1 reaches a target level the unit which performs HUMID HEAT operation switches from Unit 1 to Unit 2 automatically 3 When the temperature
131. l restore the original operation mode when the circuit breaker is opened again Trial operation from remote controller Press ON OFF button to turn on the system 1 2 3 Press TEMP AW button and select 7 TEST mode 4 Press MODE button 5 ON OFF button Press TEMP button 2 locations and MODE button at the same time Trial run mode terminates in approx 30 minutes and switches into normal mode To quit a trial operation press 2 Test items Test items Symptom diagnostic display on RC Check Indoor and outdoor units are installed properly on solid bases Fall vibration noise No refrigerant gas leaks Incomplete cooling heating function Refrigerant gas and liquid pipes and indoor drain hose extension are thermally insulated Water leakage Draining line is properly installed Water leakage System is properly earthed Electrical leakage The specified wires are used for inter unit wiring connections Inoperative or burn damage Indoor or outdoor unit s air intake or exhaust has clear path of air Stop valves are opened Incomplete cooling heating function Indoor unit properly receives remote controller commands Inoperative No strange noise from the humidifying hose Bubble sound When the bubble sound is heard water may be in the humidifying hose Do the HOSE DRY operati
132. lace blinks J DAIKIN R9429 98 Service Diagnosis SiBE12 908 Service Check Function 7 Press TEMPA or W button and change the figure until you hear the sound of beep 8 Diagnose by the sound pi The figure of the ten s place does not accord with the error code pi pi The figure of the ten s place accords with the error code but the one s not beep The both figures of the ten s and one s place accord with the error code See 7 9 Determine the error code The digits indicated when you hear the beep sound are error code Error codes and description Refer to page 100 10 Press the MODE button for 5 seconds to exit from the service check mode When the remote controller is left untouched for 60 seconds it returns to the normal mode Service Diagnosis 99 Troubleshooting SiBE12 908 2 Troubleshooting Error Code Indication by Remote Controller Various cases may be possible 2 1 Code Unit Description Reference page Air conditioner does not run 102 Air conditioner runs but does not get cooling heating 105 Basic Failure Diagnosis When operation starts safety breaker works 107 Air conditioner makes big noise and vibration 109 Air does n
133. lation Operation Manual 53 Installation Manual SiBE12 908 Indoor Unit Installation e Left side piping e Left back piping Zo A Refrigerant pipe Humidifying hose N Drain hose IA Cut out the AN piping through hole a Refrigerant pipe e Left bottom piping a Refrigerant pipe A Cut out the piping through hole Humidifying hose 1 Replace the drain plug and drain hose How to replace the drain plug and drain hose 2 Pull in the refrigerant piping and lay it so that it matches the liquid and gas piping marked on the mounting plate 3 Hook the indoor unit onto the mounting plate 4 Connect the pipes If it is difficult to do remove the front grille first 5 Wrap the insulation on the piping with insulation tape If you are not replacing the drain hose store it in the location shown as right figure aaee CGA Caulk this hole with putty or caulking material 6 While exercising care so that the inter unit wiring do not catch indoor unit press the bottom edge of indoor unit with both hands until it is firmly caught by the mounting plate hooks Secure indoor unit to the mounting plate with screws M4 x 12L 5 3 Wall embedded piping Follow the instructions given under Left side left back or left bottom piping 1 Insert the drain hose to this depth so it won t be pulled out of the drain pipe 11 Aa O Bind with plastic tape Wrap insulati
134. lation Manual SiBE12 908 1 Installation Manual 1 1 Indoor Units Indoor Unit Installation Drawings m How to attach the indoor unit Hook the claws of the bottom frame 0 Mounting to the mounting plate plate If the claws are difficult to hook Mounting plate remove the front grille lt lt Clip E How to remove the indoor unit Kad Push up the marked area at the lower part of the front grille to Bottom frame release the claws If it is difficult to Front grille Mark rear side release remove the front grille The mounting plate should be installed on a wall which can support the weight of the indoor unit If it is difficult to lay the humidifying hose cut it lay it and connect it using the joint included with the outdoor unit Screws Do not install the trap to the humidifying hose as 30mm or more much as possible from ceiling pr Humidifying Front panel a P 50mm or more from walls on both sides Install the hose with a downward slope Cut thermal insulation pipe to an appropriate length and wrap it with tape making sure that no gap is left in the insulation pipe s cut line I INTELLIGENT P EYE sensor Wrap the insulation Air filters M4 x 16L f O pipe with the finishing M4 x 16L tape from bottom to top _4 Air filters Air supply filter gray Service lid Fi
135. lay Method of Check the incompatible power supply between indoor unit and outdoor unit by using signal Malfunction transmission Detection Method of In case that the indoor intake model is connected to outdoor intake model Malfunction Detection Supposed m Connected to wrong model Causes m Mounted improper indoor unit PCB m Defective indoor unit PCB m Mounted improper outdoor unit PCB or defective PCB Troubleshooting AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check model names of the indoor unit and the outdoor unit s the combination of th NO indoor unit and the outdoor unit correct Arrange for a correct combination gt Replace the indoor control PCB A1P or replace the outdoor unit PCB R9436 122 Service Diagnosis SiBE12 908 Troubleshooting 2 14 Incomplete Setting for Hose Length I U Remote Controller Display Method of This fault occurs when the humidification hose length is not stored in the EEPROMs of the Malfunction indoor unit and the outdoor unit Detection Hose length is not stored at initial power on Malfunction m When the humidification hose length is not stored in EEPROMs of the indoor unit and the Decision outdoor unit Conditions Supposed Hose length is not set Causes Hose length is erased by replacement of the indoor unit PCB or
136. lter frame m Opening service lid In upward direction BAS Service lid is opening closing type Left side Right side A ae Ts SN m Opening method 1 Remove the service lid screws 2 Pull out the service lid diagonally Air supply lt down in the direction of the arrow filter 3 Pull down Filter alae Gi Air supply filter gray A Holes 4 locations 4 locations Titanium apatite photocatalytic air purifying filter e Hold the knob to pull up Air filter Wireless Es remote N controller Before screwing the remote controller holder to the wall make sure that control signals are properly received by indoor unit Screws field supply M3 x 20L r Remote controller holder INTELLIGENT EYE sensor CAUTION 1 Do not hit or violently push the INTELLIGENT EYE sensor This can lead to damage and malfunction 2 Do not place large objects near the sensor Also keep heating units or humidifiers outside the sensor s detection area 46 Installation Operation Manual SiBE12 908 Installation Manual Preparation before Installation 1 Removing and installing front panel e Removal method Hook fingers on the tabs on the left and right of the main body and open until the panel stops Slide the front panel sideways to disengage the rotating shaft Then pull the front panel toward you to remove it e Installation method Align the tabs of
137. midity HUM TEMP C O a Lv 1 MODE XECONO amp POWERFUL COMFORT SWING QUIET SENSOR R9409 Refer to the operation manual for details Features m A world first new humidifying method has adopted What is new in this method is to intake vapor in the outdoor air with the hygroscopic element mounted in outdoor unit and send indoors This has enabled powerful and speedy humidification apart from other company s methods which just absorb moisture in the indoor air by taking in outdoor moisture ej EREE fully humidifying the room A by taking in outdoor moistur l R9410 m The room is uniformly humidified e Humidifier heating operation by air conditioner Moisture gathers around the ceiling as it is lighter than the air even if the humidifier is operated The air on the floor is kept dry When using humidifier moisture gathers around the ceiling R3325 Function and Control Main Functions SiBE12 908 il Note m HUMID HEAT operation by URURU This air conditioner enables uniformly humidifying the room by circulating vapor with warm air The room is uniformly humidified R3326 Powerful humidifying ability The humidifying capacity is 450 ml h and equivalent to that of a normal humidifier The value is measured at 7 C DB 6 C WB of outdoor air and with 4 0 m of humidifying hose length No need for wate
138. mption 40 class 51 Hz Frequency 50 class 48 Hz R7164 With the conventional function a power consumption is weak comparing with that in the normal operation when gas is insufficient and gas insufficiency is detected by checking a power consumption Gas insufficient zone R1391 When operating with insufficient gas although the rise of discharge pipe temperature is great and the electronic expansion valve is open it is presumed as an insufficient gas if the discharge pipe temperature is higher than the target discharge pipe temperature Refer to Insufficient Gas on page 147 for detail Function and Control 41 Control Specification SiBE12 908 Detail Judgment by Input Current When an output frequency is exceeds 51 Hz 40 class or 48 Hz 50 class and the input current is less than specified value the adjustment is made for insufficient gas Judgment by Discharge Pipe Temperature When discharge pipe temperature is higher than 101 C the electronic expansion value opening is 450 plus max and the adjustment is made for insufficient gas 3 13 4 Preventing Indoor Freezing During cooling if the heat exchanger temperature in the operation stopped room becomes below the specified temperature for the specified time open the electronic expansion valve in the operation stopped room as specified and carry out the fully closed operation After this if freezing abnormality occurs more than specified time
139. n Malfunction When the input from a temperature sensor is 4 96 V or more or 0 04 V or less Decision Conditions Supposed m Improper connector connection Causes m Defective indoor control PCB m Defective humidity sensor PCB Troubleshooting A Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check the connector for proper Connect the connector again for connection between the indoor ensuring the connection control PCB and display PCB NO gt Reconnect properly YES gt Replace the indoor unit PCB tf Humidity sensor R9422 Service Diagnosis 119 Troubleshooting SiBE12 908 2 12 Signal Transmission Error Indoor Unit Outdoor Unit na 15 Remote Controller Display Outdoor Unit LED A 5 Display Method of The data sent from the outdoor unit is checked for problem Malfunction Detection Malfunction When the data sent from the outdoor unit can not be received without error or when the disable Decision status of signal transmission continues for 15 sec Conditions Supposed Defective outdoor unit PCB Causes Defective indoor unit PCB Signal transmission error between indoor and outdoor unit due to improper wiring Signal transmission error between indoor and outdoor unit due to breakage of relay wire transmission wire 120 Service Diagnosis SiBE12 908 Troubleshooting Troubleshooti
140. n motor gt Replace the indoor unit PCB R9465 Service Diagnosis 117 Troubleshooting SiBE12 908 2 10 Thermist Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions il Note Supposed Causes Troubleshooting Check No 02 Refer to P 162 or or Related Abnormality Indoor Unit Ti rs Lil The temperatures detected by the thermistors are used to determine thermistor errors When the thermistor input is more than 4 96 V or less than 0 04 V during compressor operation reference When above about 212 C less than 120 ohms or below about 50 C more than 1 860 kohms The values vary slightly in some models m Faulty connector connection m Faulty thermistor m Faulty PCB A Caution Check the connector connection Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred NO gt Correct the connection YES Check No 02 Check the thermistor resistance value NO Replace the thermistor Replace the indoor unit PCB YES Replace the indoor unit PCB R9466 Heat exchanger thermistor Room temperature thermistor 118 Service Diagnosis SiBE12 908 Troubleshooting 2 11 Humidity Sensor Abnormality Remote Controller Display Method of Sensor abnormality is detected by input value Malfunction Detectio
141. n K 16 17 _ ancet 0 18 ToT 14 E Remote Controller 1 Signal transmitter It sends signals to the indoor unit 2 Display LCD e It displays the current settings In this illustration each section is shown with its displays ON for the purpose of explanation 3 FAN setting button e It selects the airflow rate setting 4 HUMIDIFY VENTILATE button e HUMID HEAT operation and FRESH AIR SUPPLY VENTILATION page 12 5 ON OFF button e Press this button once to start operation Press once again to stop it 6 TEMPERATURE adjustment buttons e It changes the temperature setting 7 MODE selector button e It selects the operation mode AUTO DRY COOL HEAT FAN page 8 8 POWERFUL QUIET button e POWERFUL and OUTDOOR UNIT QUIET operation page 17 9 ECONO button ECONO operation page 18 10 SWING button Flaps horizontal blades page 10 11 SWING button e Louvers vertical blades page 10 12 COMFORT SENSOR buiton e COMFORT AIRFLOW and INTELLIGENT EYE operation page 15 13 WEEKLY WEEKLY button Ce J PROGRAM button copy COPY button BACK BACK button NEXT NEXT button WEEKLY TIMER operation page 21 14 SELECT button e It changes the ON OFF TIMER and WEEKLY TIMER settings page 19 20 22 15 OFF TIMER button page 19 16 ON TIMER button page 20 17 TIMER CANCEL button e It cancels the timer setting page 19 20
142. n ROOM A and in downward direction in ROOM B lt Front side gt a Humidifying hose lt Back side gt Allow 300mm of work space below the ceiling surface Humidifying hose Humidifying hose ROOMB Stop valve cover a9 Level mounting base available separately unit mm If there is the danger of the unit falling or overturning fix the unit with foundation bolts or with wire or other means If the location does not have good drainage place the unit on a level mounting base or a plastic pedestal Install the outdoor unit in a level position Failure to do so may result in water leakage or accumulation Also insulate the connection on the outdoor unit Clamping material Insulation tube Tape Stop valve cover Use tape or insulating material on all connections to prevent air from getting in between the copper piping and the insulation tube Be sure to do this if the outdoor unit is installed above 58 Installation Operation Manual SiBE12 908 Installation Manual Installation e Install the unit horizontally e The unit may be installed directly on a concrete verandah or a solid place if drainage is good e If the vibration may possibly be transmitted to the building use a vibration proof rubber field supply 1 Connections connection port Install the indoor unit according to the table below which sh
143. n terminal R5161 3 9 Power Transistor Check Check No 15 m Do not touch the live parts within 10 min after the breaker is turned off m Even after that when you touch the parts check to see that supply voltage of the power transistor is less than 50 V with a tester m Measure resistance at connector terminal on PCB or at the relay connector Power transistor UVW Power transistor UVW terminal of a tester 4 Power transistor UVW Power transistor terminal of a tester UVW Resistance in OK several kQ several MQ Resistance in NG 0 or Service Diagnosis 167 Check SiBE12 908 3 10 Discharge Pressure Check Check No 16 Discharge pressure check i EE NO Is it high Replace the compressor 1 YES NO Is the stop valve open gt Open the stop valve f YES i i YES Is the connection pipe Replace the field piping NO Are the heat exchanger YES and air filter dirty Clean it EN gt Replace the compressor R9683 168 Service Diagnosis SiBE12 908 Check 3 11 Electronic Expansion Valve Check Check No 17 Check the electronic expansion valve EV as follows 1 2 3 Check if the EV connector properly inserted into the control PCB Collate the number of EV main body with that of the connector Check to see that clatter latching sound is heard from all of the EVs when turning on the
144. n the air filter NO Check the dust accumulation on the indoor unit heat exchanger YES NO Check No 02 Indoor unit heat exchanger thermistor check Does it conform to the YES gt Clean the heat exchanger thermistor characteristic chart No gt Replace the indoor unit PCB gt Replace the thermistor replace the indoor unit PCB R9464 Service Diagnosis 115 Troubleshooting SiBE12 908 2 9 Fan Motor DC Motor or Related Abnormality lt al i Remote gi Controller Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine Malfunction abnormal fan motor operation Detection Malfunction When the detected rotation speed does not reach the demanded rotation speed of the target Decision tap and is less than 50 of the maximum fan motor rotation speed Conditions Supposed Operation halt due to short circuit inside the fan motor winding Causes Operation halt due to breaking of wire inside the fan motor Operation halt due to breaking of the fan motor lead wires Operation halt due to faulty capacitor of the fan motor Detection error due to faulty indoor unit PCB 116 Service Diagnosis SiBE12 908 Troubleshooting Troubleshooting Check No 01 Turn off the power supply d rotate the f Refer to P 161 2nd fotate the fan by Does the fan rotate smo
145. n type is mainly divided into two The convenient system is supply ventilation Supply Ventilation Exhaust Ventilation Air SUPPIY Draft R5979 Quiet because the ventilation fan is located in Operation noise is heard because the ventilation the outdoor unit fan is located in the room Energy saving system due to low heat loss Electricity charges are high because heat loss is high The room temperature changes little because Draft enters easily to prevent comfortable no wind enters temperature from being kept Function and Control 15 Main Functions SiBE12 908 1 9 2 AREA INTELLIGENT EYE Processing The following functions can be performed by a human motion sensor INTELLIGENT EYE 1 Reduces the capacity when there is no human in the room in order to save electricity energy saving operation 2 Divides the room into plural areas and detects existence of humans in each area Shifts the airflow direction to the area having no human automatically to avoid direct airflow on humans 1 Detection method by INTELLIGENT EYE If the sensor detects the outputs 10 times sec sampling 20msec Pn or more it judges humans exist Sensor output High Condition of 10 times or more output E niii K Detection signal ON from the sensor OFF Continue 3 sec If the detection signal ON continues 3 sec or more it judges humans exist
146. n valve according to the shift 3 12 9 High Temperature of the Discharge Pipe When the compressor is operating if the discharge pipe temperature exceeds a certain value open the electronic expansion valve and remove the refrigerant to the low pressure side and lower discharge temperature 3 12 10 Oil Recovery Function Outline Detail The electronic expansion valve opening in the cooling stopped room must be set as to open for a certain time at a specified interval so that the oil in the cooling stopped room may not be accumulated During cooling operation every 1 hour continuous operation the electronic expansion valves in the operation stopped room must be opened by 80 pulses for specified time 3 12 11 Target Discharge Pipe Temperature Control Obtain the target discharge pipe temperature from the indoor and outdoor heat exchange temperature and adjust the electronic expansion valve opening so that the actual discharge pipe temperature become close to that temperature Indirect SH control using the discharge pipe temperature Set the target discharge pipe sc temperature as to become an aiming SH Regard that the inclination cannot be SH changed due to the operating condition R1389 Determine a correction value of the electronic expansion valve compensation and drive it according to the deflection of the target discharge temperature and actual discharge temperature and the discharge temperature variation by t
147. ndition check gt Rectify the power supply or replace the outdoor unit PCB R9441 130 Service Diagnosis SiBE12 908 Troubleshooting 2 21 Discharge Pipe Temperature Control Remote Controller Display Outdoor Unit LED Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Check No 02 Refer to P 162 Check No 12 Refer to P 165 Check No 17 Refer to P 169 Ls Ax 5x Discharge pipe temperature control stop frequency attenuation etc is executed based on the temperature detected by the discharge pipe thermistor If the temperature being detected by the discharge pipe thermistor rises the compressor will stop The temperature at which the compressor halts varies according to the frequency 1 110 C when the frequency is above 30Hz on ascending or above 25Hz on descending 2 108 C when the frequency is below 30Hz on ascending or below 25Hz on descending m The error is cleared when the temperature has dropped below 95 C m Ifthe compressor stops 6 times successively due to abnormal discharge pipe temperature the system will be shut down m The error counter will reset itself if this or any other error does not occur during the following 60 minute compressor running time total time m Insufficient gas Faulty operation of four way valve Defective discharge pipe thermistor Defective
148. ng A Caution Check the relay wire between the indoor unit and the outdoor unit for color and number or parts damage may be occurred Is there any improper YES Be sure to turn off power switch before connect or disconnect connector wiring perform setting of fan operation to release the stand by power function Is the insulation between relay wire and Poor insulation For the machine with stand by power saving function gt Correct relay wire between indoor and outdoor unit Voltage 7 sec 15sec Stop 4 4 t Power on Check during Fault this period determined the insulation to the earth properly Does the distance of YES gt Replace relay wire between indoor and outdoor unit relay wire exceed Check outdoor unit LED A Does it flashing It glows or not gt Distance is to be within the specified range 30 m or less Disconnect No 3 Measure the voltage between 2 and 3 Apply negative terminal to No 2 in DC range YES Is the measured gt Replace the outdoor unit PCB value 30 to 50 V NO below 30 V or above 50 V gt Replace the indoor control PCB A1P gt Replace the outdoor unit PCB R9435 Service Diagnosis 121 Troubleshooting SiBE12 908 2 13 Incompatible Power Supply between Indoor Unit and Outdoor Unit I U Remote Controller Disp
149. ng tape around the bent portion of refrigerant pipe Overlap at least half the width of the tape with each turn Bottom frame pZ Mounting plate Refrigerant pipes fa M4 x 12L 2 point Insert the drain hose to this depth so it won t be pulled out of drain pipe 50mm or more Outer wall Drain hose Vinyl chloride drain pipe VP 30 54 Installation Operation Manual SiBE12 908 Installation Manual 6 Wiring CULM tue install as described in the installation manual supplied with the multi outdoor unit 1 Strip wire ends 15mm 2 Match wire colours with terminal numbers on indoor and outdoor unit s terminal blocks and firmly screw wires to the corresponding terminals 3 Connect the earth wires to the corresponding terminals 4 Pull wires to make sure that they are securely latched up then retain wires with wire retainer 5 In case of connecting to an adapter system Run the remote controller cable and attach the S21 6 Shape the wires so that the service lid fits securely then close service lid Terminal block gt Firmly fix the wires with the terminal screws i Electrical component box Outdoor unit 1 203 of Shape wires so that the oog service lid will fit securely When wire length exceeds _ 10m use 2 0mm diameter wires as Firmly
150. nosis 95 Service Check Function SiBE12 908 1 2 Failure Diagnosis by LED Indication The following failure diagnosis can be done by LED indication on the outdoor unit PCB 1 The outdoor unit has 2 green LED LED A LEDS5 on the PCB The flashing green LED indicates in order condition The turned ON or OFF LED indicates the failure related to the microcomputer m PCB is set upside down with backside up to improve its quality m LED can be visually inspected through a inspection slit 96 Service Diagnosis SiBE12 908 Service Check Function 1 3 Failure Diagnosis by Remote Controller The temperature display sections on the remote controller indicate corresponding codes Check Method 1 1 When the timer cancel button is held down for 5 seconds a temperature display section TIMER CANCEL button 7 DAIKIN FAN e HUM ON OFF a TEMP 7 MODE Econo POWERFU L COMFORT P a gA QUIET SENSOR WEEKLY 2 BACK OFF CANCEL lt ARC452A5 gt mye Dara indication flashes on the Open the front cover R9418 2 Press the timer cancel button repeatedly until a continuous beep is produced m The code indication changes in the sequence shown below and notifies with a long beep No Code No Code No Code 1 oo 13 4 25 us 2 uy 14 Ag 26 ue
151. ntegrated to ensure a fixed room temperature It is possible to air condition with a small room temperature variation Energy saving heating and cooling Once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power Frequency Limits The following table shows the functions that define the minimum and maximum frequency Frequency limits Limited during the activation of following functions Low E Four way valve operation compensation Refer to page 31 High m Discharge pipe temperature control Refer to page 33 E Input current control Refer to page 33 m Compressor protection function Refer to page 32 m Heating peak cut control Refer to page 34 E Freeze up protection control Refer to page 34 m Defrost control Refer to page 36 Forced Cooling Operation For more information refer to Forced operation mode on page 42 Function and Control Main Functions SiBE12 908 1 2 Thermostat Control Thermostat control is based on the difference between the room temperature and the set point Thermostat OFF Condition The temperature difference is in the zone A Thermostat ON Condition The temperature difference is above the zone C after being in the zone A The system resumes from defrost control in any zones except A The operation turns on in any zones except A The monitoring time has passed while
152. nutes stop the FORCED COOLING operation as quickly as possible after the gas stop valves at the pipes for rooms A and B have been shut off He aie 5 Turn the power breaker off Close Valve cap A CAUTION Run the air conditioner to cool both rooms A and B when performing a pump down 1 FORCED COOLING operation 1 1 Using the indoor unit ON OFF button 1 Press the ON OFF button on the indoor unit in either room A or B for 5 seconds continuously The units in both rooms will start 2 FORCED COOLING operation will end after around 15 minutes and the unit will stop automatically Press the ON OFF button on the indoor unit to FORCED COOLING operation to stop 3 Use this method to FORCED COOLING operation when the outside temperature is 10 C or lower 1 2 Using the wireless remote controller 1 Select cooling operation and press the ON OFF button The unit will start 2 Press the TEMP A W button 2 locations and the MODE button at the same time 3 Press the MODE button twice 7 will be displayed and the unit will go into test run mode 4 Test run mode will end after around 30 minutes and the unit will stop automatically Press the ON OFF button to force the test run to stop A CAUTION If the outside temperature is 10 C or lower the safety device might start preventing operation In this situation warm the outside temperature thermistor on the outdoor unit to 10
153. o complete the setting e Exit copy mode QW is displayed on the LCD and WEEKLY TIMER operation is activated e The entire reservation of the source day of the week is copied in the copy mode Detailed settings can be made after the copy is completed Installation Operation Manual 89 Operation Manual SiBE12 908 E Confirming a reservation e The reservation can be confirmed Setting Displays gt 600 a e 15 38 S st T Normal display Confirmation display fa omer x 1 Press PROGRAM button HUM TEMP e The day of the week and the reservation number of the current day will be displayed y MODE TECON amp POWERFUL COMFORT SWING 1 3 2 Press SELECT button to select the day of the week and the reservation number to be confirmed Pia ae C e Pressing the SELECT button displays the reservation details 4 6 7 WEEKLY COPY 6 7 Em 3 Press PROGRAM button A BACK SELECT NEXT e Exit confirming mode lia E e 5 EW is displayed on the LCD and WEEKLY TIMER operation is activated cance e e The TIMER lamp lights up EDY MULTI MONITOR Ca y7 ee aA a e pt JO JIN oe To deactivate WEEKLY TIMER operation 4 Press WEEKLY button while MEXM is displayed on the LCD e The MERy will disappear from the LCD e The TIMER lamp goes off e To reactivat
154. oil to the flare nut avoid tightening with over torque Flare nut tightening torque Gas side Liquid side 25 35 42 class 50 class 3 8 inch 1 2 inch 1 4 inch 32 7 39 9N m 49 5 60 3N m 14 2 17 2Nem 330 407kgf cm 505 61 5kgf cm 144 175kgf e cm 2 1 Caution on piping handling i Be sure to i r i Wye 1 Protect the open end of the pipe against dust and moisture gt arn place a cap Rain i If no flare cap is available cover the 2 All pipe bends should be as gentle as possible Use a pipe bender for bending flare mouth with tape to keep dirt or water out Wall 2 2 Selection of copper and heat insulation materials e When using commercial copper pipes and fittings observe the following Finishing tape Inter unit wiring 1 Insulation material Polyethylene foam casa Heat transfer rate 0 041 to 0 052W mK 0 035 to 0 045kcal mhe C Drains Refrigerant gas pipe s surface temperature reaches 110 C max Choose heat insulation materials that will withstand this temperature Gas bibs insulation Humidifying 2 Be sure to insulate both the gas and liquid piping and to provide insulation Liquid pipe insulation Liquid pipe hose dimensions as below Gas side Liquid sid Gas pipe thermal insulation Liquid pipe 25 35 42 class 50 class re 25 35 42 class 50 class thermal insulation O D 9 5mm O D 12 7mm O D 6 4mm I D 12 15mm I D 14 16mm 1 D 8 10mm
155. on HOSE DRY operation for humidifying hose 2 Press TEMP AY button and select 3 DRYING mode 3 Press MODE button to start the HOSE DRY operation HOSE DRY operation will work about 30 minutes 1 Press TEMP button 2 locations and MODE button at the same time To cancel the HOSE DRY operation hold MODE button for more than 5 seconds 4 Activate test run for HUMID HEAT operation again check that the bubble sound is not heard from the humidifying hose 14 3P232706 1B Installation Operation Manual 57 Installation Manual SiBE12 908 1 2 Outdoor Units Outdoor Unit Installation Drawings 1 Precautions for humidifying hose installation work e Moisture on the outdoor unit is brought to the indoor unit together with air around the outdoor unit during humidifying operation Install the outdoor unit in a clean and calm location e Be sure to use the humidifying hose sold as an optional accessory KPMH996A10S 10m set KPMH996A15S 15m set A CAUTION Do not connect the embedded branch piping and the outdoor unit when only carrying out piping work without connecting the indoor unit in order to add another indoor unit later Make sure no dirt or moisture gets into either side of the embedded branch piping See Precautions for Laying Refrigerant Piping on page 9 for details E Installation of humidifying hoses respectively in upward direction i
156. on Operation Manual SiBE12 908 Operation Manual WEEKLY TIMER Operation J DAIKIN aeg rN a maw JON M 50 ek FAN ON OFF a TEMP C 6 2 MODE TECON POWERFUL COMFORT Pi QUIET SENSOR SWING ZAI COPY NEXT OFF ON Gav NOTE m COPY MODE 3 5 2 4 Copy mode e A reservation made once can be copied another day of the week The whole reservation of the selected day of the week will be copied Programi Program2 Program 3 Program 4 ON_ OFF ON OF Monday 27 C 6 00 8 30 17 30 22 00 copy amp Programi Program2 Program 3 Program 4 Tuesday ON OFF ON OF to l 27 C Friday 6 00 a0 7 1730 22 00 Setting Displays Confirmation display Copy display Paste display Normal display 1 Press PROGRAM button 2 Press SELECT button to confirm the day of the week to be copied 3 Press COPY button e This activates copy mode e The whole reservation of the selected day of the week will be copied 4 Press SELECT button to select the destination day of the week 5 Press COPY button e The reservation will be copied to the selected day of the week e To continue copying the settings to other days of the week repeat STEP 4 and STEP 5 6 Press PROGRAM button t
157. op operation 3 Press ON OFF button again K disappear from the LCD Then OPERATION lamp goes off E To change the temperature setting 4 Press TEMPERATURE adjustment button e The displayed items on the LCD will change whenever either one of the buttons is pressed DRY or FAN mode COOL mode HEAT mode AUTO mode 18 32 C 10 30 C 18 30 C The temperature setting is not variable Press button to raise the temperature and press W button to lower the temperature Installation Operation Manual 73 Operation Manual SiBE12 908 To change the airflow rate setting 5 Press FAN setting button DRY mode AUTO or COOL or HEAT or FAN mode Five levels of airflow rate setting from to E plus Al and amp are available The airflow rate setting is not variable d 008 eee e Indoor unit quiet operation When the airflow is set to i SA the noise from the indoor unit will become quieter Use this when making the noise quieter e Each pressing of the button advances the airflow rate setting in sequence Bia v A B CA CI CA gt T ae lt A ml z NOTE m Notes on HEAT operation e Since this air conditioner heats the room by taking heat from outdoor air to indoors the heating capacity becomes smaller in lower outdoor temperatures If the heating effect
158. ot humidified enough 110 Ai Indoor unit PCB abnormality 113 5S Freeze up protection or high pressure control 114 Aes Fan motor or related abnormality 116 gy aca Indoor heat exchanger thermistor abnormality 118 ES Room temperature thermistor abnormality 118 te Humidity sensor abnormality 119 Ei Outdoor unit PCB abnormality 125 eS OL activation compressor overload 126 ba Compressor lock 127 Es DC fan lock 128 E5 Input overcurrent detection 129 F3 Discharge pipe temperature control 131 Fa High pressure control in cooling 132 He Compressor sensor system abnormality 134 WW Humidifying unit Damper abnormality 135 Hh Position sensor abnormality 136 He DC voltage DC current sensor abnormality 138 HS Outdoor air thermistor abnormality 139 us Discharge pipe thermistor abnormality 139 Pits Outdoor heat exchanger thermistor abnormality 139 ue Outdoor Liquid pipe thermistor abnormality 139 ibe Gas pipe thermistor abnormality 139 LJ Abnormal temperature in electrical box 141 L Temperature rise in radiation fin 143 L5 Output overcurrent 145 ry Radiation fin thermistor abnormality 139 ry Fan motor system abnormality fan lock 155 rr Humidifying unit Heater wire abnormality 156 En Humidification fan outlet thermistor abnormality abnormal heater 158 temperature us Insufficient gas 147 ue System Over voltage protection OVP low voltage protection LVP 149 Wm Signal transmission error indoor unit outdoor unit 120 K Outdoor Outdoor unit
159. other than the specified refrigerant R410A into the refrigeration cycle 2 When refrigerant gas leaks occur ventilate the room as soon and as much as possible 3 R410A as well as other refrigerants should always be recovered and never be released directly into the environment 4 Be sure to check for gas leaks e Be sure to perform vacuum pumping for all the rooms at the same time e Be sure to use the special tools for the R410A gauge manifold charge hose vacuum pump vacuum pump adapter etc e Use a hexagonal wrench 4mm to operate the stop valve rod e All refrigerant pipe joints should be tightened with a torque wrench at the specified tightening torque 1 Connect the charge hose protrusions the side for pushing the pin for low pressure and high pressure on the gauge manifold to the gas stop valve service port for rooms A and B Oa 2 Fully open gauge manifold s low pressure valve Lo and high pressure valve Hi Le 3 Apply vacuum pumping for 20 minutes or longer Check that the compound pressure gauge reads 0 1MPa 76cmHg nes 4 After checking the vacuum close the low pressure and high pressure valves on the gauge manifold and stop the vacuum pump Leave as is for 4 5 minutes and make sure the coupling meter needle does not go back If it does go back this may indicate the presence of moisture or leaking from connecting parts After inspecting all the connection and loosening then retightening the
160. othly Turn the power ON and operate the fan Turn off the power supply NO and disconnect the fan motor connector then turn the power ON Does it rotate YES Y Check No 01 Check the output of the fan motor connector Is the motor power voltage DC NO AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Replace fan motor 200V generated Is the motor control NO Replace the indoor unit PCB power voltage DC 15V generated Turn off the power supply and disconnect the fan motor connector then turn the power ON again y Check No 01 Check the output of the fan motor connector Is the rotation number command YES Replace the indoor unit PCB voltage DC 1 6V generated Y Check No 01 Check the output of the fan motor connector Stop the fan motor Y Check No 01 Check the output of the fan motor connector Is the rotation number NO Replace the fan motor Note The motor may break when the motor connector is disconnected while remaining power supply command pulse generated Replace the fan motor and the indoor PCB Is the rotation number command pulse generated gt Replace the indoor unit PCB Replace the fa
161. ow a clever method of using it In order to meet this expectation of the users giving sufficient explanations taking enough time can be said to reduce about 80 of the requests for servicing However good the installation work is and however good the functions are the customer may blame either the room air conditioner or its installation work because of improper handling The installation work and handing over of the unit can only be considered to have been completed when its handling has been explained to the user without using technical terms but giving full knowledge of the equipment 70 Installation Operation Manual SiBE12 908 Operation Manual 3 Operation Manual Names of Parts Name of Parts E Indoor Unit 1 Air filter 2 Titanium apatite photocatalytic air purifying filter e These filters are attached to the inside of the air filters 3 Air inlet 4 Front panel 5 Panel tab 6 Room temperature and humidity sensors It senses the air temperature and humidity around the unit 7 INTELLIGENT EYE sensor page 15 8 Control panel 9 Air outlet 10 Flaps horizontal blades page 10 11 Louvers vertical blades e The louvers are inside of the air outlet page 10 12 Air supply filter gray page 29 13 Indoor Unit ON OFF switch page 8 e Push this switch once to start operation Push once again to stop it The operation mode refers to the following table Mode Temperature
162. owing functions Four way valve operating compensation draft prevention pressure difference upkeep 4 Determine prohibited frequency There is a certain prohibited frequency such as a power supply frequency Function and Control 29 Control Specification SiBE12 908 Indoor Frequency Command AD signal The difference between a room temperature and the temperature set by the remote controller will be taken as the AD signal and is used for frequency command Temperature AD Temperature AD Temperature AD Temperature AD difference signal difference signal difference signal difference signal 0 Th 2 0 4 4 0 8 6 0 C OFF 0 5 1 2 5 5 4 5 9 6 5 D 1 0 2 3 0 6 5 0 7 0 E 1 5 3 3 5 7 5 5 B 7 5 F Th OFF Thermostat OFF Indoor Unit Capacity S value The capacity of the indoor unit is a S value and is used for frequency command ex Capacity S value 2 5 kW 25 3 5 kW 35 Frequency Initial Setting lt Outline gt When starting the compressor or when conditions are varied due to the change of the operating room the frequency must be initialized according to the total of a maximum AD value of each room and a total value of Q Q of the operating room the room in which the thermostat is set to ON Q value Indoor unit output determined from indoor unit volume airflow rate and other factors PI Control Determine Frequency Up Down by AD Signal 1 P
163. ows the relationship between the class of indoor unit and the corresponding port The total indoor unit class that can be connected to this unit 2MXU40G Up to 6 0kW 2MXU50G Up to 8 5kW Port 2MXU40G 2MXU50G A 25 35 25 35 42 B 25 35 25 5 42 50 C Use a reducer to connect pipes Refer to How to Use Reducers for information on reducer numbers and their shapes How to Use Reducers No 1 No 2 012 7 09 5 012 73 09 5 LP EA Gasket 1 Gasket 2 Use the reducers supplied with the unit as described below e Connecting a pipe of 9 5 to a gas pipe connection port for 12 7 lim B THU SS f No 1 No 2 LV Flare nut for 612 7 Connection port of outdoor unit Be sure to attach the gasket Inter unit piping e When using the reducer packing shown above be careful not to overtighten Flare nut tightening torque the nut or the smaller pipe may be damaged about 2 3 1 the normal torque e Apply a coat of refrigeration oil to the threaded connection port of the outdoor unit where the flare nut comes in Flare nut for 49 5 60 3N m e Use an appropriate wrench to avoid damaging the connection thread by over 912 7 505 61 5kgf cm tightening the flare nut Precautions on Installation e Check the strength and level of the installation ground so that the unit will not cause
164. r supply nor cleaning Water supply and cleaning are unnecessary as it does not have water tank unlike humidifiers and there is no proliferations of bacteria Humidity control The target of the humidity level is 40 to 50 RH You can select from Low STD standard Hi high and CONT continuous The target humidity cannot be set When the outdoor temperature and humidity are low the humidifying capacity is decreased In addition the moisture in the room may not attain sufficient humidity when the ventilation volume is high the preset temperature is high or the preset humidity is HIGH m After the humid heating operation starts the relative humidity in the room lowers temporarily This phenomenon is caused by the increase of the saturation water vapor Therefore the humidity raises gradually after the temperature reaches the preset temperature m Inthe humidifying operation the operation sound increases by about 2 dB in the indoor unit and 3 dB in the outdoor unit m This system does not suppose the storage of musical instruments or the like Conditions for While heating mode humidifying operation can be available when the following conditions 1 5 Humidifying are met at the same time Operation 1 Indoor heat exchanger temperature is 12 C or more 2 Outdoor temperature is from 10 C to 24 C meanwhile in test operation up to 34 C is possible Humidifying operation does not work under 10 C 3 Approx 1 minute
165. r to the operation manual for details Features The air supply ventilation system using only fresh air Any contaminated outdoor air is purified in two stages of indoor unit and outdoor unit Fresh air from which bacteria were removed is supplied into the room 2 Pollen and dust are indoor indoor removed Unit Fresh Air Indoor Unit Outdoor Unit k Odor 3Pollen Dust 1 Purifying air in the outdoor unit Thermal catalyst containing in the humidifying rotor analyzes unpleasant odor and also removes exhaust gases NOx SOx Manganese catalyst used to treat the automotive exhaust gas is adopted for the thermal catalyst 2 Purifying air in the indoor unit 1 Unpleasant odors are decomposed Thermal Unpleasant Catalyst Odors Pollen ged R9415 The air supply filter is placed at the humidifying hose outlet of the indoor unit side The air supply filter removes about 97 pollen and dust 3 Controlling temperature The fresh air passed through the air supply filter is cooled or heated in the indoor unit and supplied into the room You can keep comfortable temperature and also replace air because the ventilation is performed while temperature is controlled Pollen exhaust gas and odor that could not be removed by the thermal catalyst and air supply filter will be decomposed by photocatalyst Function and Control SiBE12 908 Main Functions m Ventilation System The ventilatio
166. refrigerant to be used on the machine nameplate Precautions when adding R410A Fill from the liquid pipe in liquid form It is a mixed refrigerant so adding it in gas form may cause the refrigerant composition to change preventing normal operation 1 Before filling check whether the cylinder has a siphon attached or not It should have something like liquid filling siphon attached displayed on it Filling a cylinder with an attached siphon Filling other cylinders am Stand the cylinder upright when filling Turn the cylinder upside down when filling There is a siphon pipe inside so the cylinder need not be upside down to fill with liquid 2 Be sure to use the R410A tools to ensure pressure and to prevent foreign objects entering 6 Charging with refrigerant e If the total length of piping for all rooms exceeds 20m additionally charge with R410A 20g of refrigerant for each additional meter of piping Important information regarding the refrigerant used This product contains fluorinated greenhouse gases covered by the Kyoto Protocol Do not vent gases into the atmosphere Refrigerant type R410A GWP value 1975 GWP global warming potential Please fill in with indelible ink m the factory refrigerant charge of the product m the additional refrigerant amount charged in the field and m the total refrigerant charge I l l l l l l l l l I I l l l l l on the refrigeran
167. rness AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Turn off the power supply and disconnect U V and W harnesses Check No 14 Check the inverter by the inverter checker Inverter checker Part No 1225477 YES Turn off the power supply replace the harnesses and restart the compressor after turning on the power supply again YES Does the compressor gt Rectify the power supply or replace the outdoor unit PCB stop without running Does the machine shut down after Replace the compressor repeating stop of compressor several times gt Check the electronic expansion valve Replace the electronic expansion valve gt Replace the compressor R9439 Service Diagnosis 127 Troubleshooting SiBE12 908 2 19 DC Fan Lock Remote Controller Display Outdoor UnitLED A 5 Display Method of Identify the fan motor system fault based on fan speed detected by Hall IC during high pressure Malfunction fan motor running Detection Malfunction m When the fan motor is running the fan does not rotate for 60 sec or more Decision m Shut down when the error repeats 16 times Conditions Clear condition The fan continuously rotates for 11 min without fault Supposed m Failure in fan motor Causes m Disconnection or improper conne
168. s the air filter blocked Is the load i e size of NO gt Clean the air filter the room appropriate for the capacity Is the refrigerant piping Too long gt Replace with an appropriate model or add another machine too long Appropriate Check No 02 Is the room temperature thermistor or the outdoor NO gt Piping length is to be within the specified range temperature thermistor in good working order Is the supplied voltage NO gt Replace the thermistor appropriate gt Change power supply installation gt Check detailed operating conditions diagnosis by gas pressure operation current R9431 When an air conditioner does not cool or heat the room refrigerant leak is considered to be one of the reasons Make sure that there is no gas leakage or breaks due to over tightened flare part Though the refrigerant used in an air conditioner is itself harmless but it can generate toxic gases when it leaks into room and contacts flames such as fan and other heaters stoves and ranges In case of leakage ventilate the room immediately 106 Service Diagnosis SiBE12 908 Troubleshooting 2 4 When operation starts safety breaker works Method of Malfunction Detection Malfunction Decision Conditions Insufficient capacity of safety breaker Earth leakage breaker is too sensitive Not exclusive circuit Th
169. setting Airflow rate AUTO 25 C AUTO e This switch is useful when the remote controller is missing 14 Multi monitor lamp page 8 e The lamp color changes according to the operation e AUTO DRY Blue Red Green Blue 15 TIMER lamp yellow page 19 16 INTELLIGENT EYE lamp green page 15 17 Signal receiver e It receives signals from the remote controller e When the unit receives a signal you will hear a short beep e Operation start e Settings changed e Operation stop E Outdoor Unit 18 Air inlet Back and side 19 Refrigerant piping humidifying hose and inter unit cables 20 Drain hoses 21 Earth terminals e It is inside of this cover 22 Air outlet 23 Humidifying hoses 24 Humidity unit beep beep beep beeeeep 17 15 MOMTOR 14 pH 46 C18 Outdoor Unit 18 eee 23 m 19 ANE AE AA A B ae L99 J A A 21 Installation Operation Manual 71 Operation Manual SiBE12 908 Remote Controller a Gna OFF 088s 4 J DAIKIN SATSUN O onBG GOe lt ARC452A5 gt Open the front cover me 5 TEMP 6 9 10 POWERFUL COMFORT geet I 3 8 Fa aA QUIET _SFNSOR 1 2 43 WEEKLY _ _ COPY SELECT 15 OFF v Co
170. sor off With the compressor off the radiation fin temperature is above 80 C The error is cleared when the temperature drops below 70 C Fin temperature rise due to defective outdoor fan Fin temperature rise due to short circuit Detection error due to defective fin thermistor Detection error due to improper connection of connector Detection error due to defective outdoor unit PCB Service Diagnosis 141 Troubleshooting SiBE12 908 Troubleshooting Check No 02 Refer to P 162 Check No 03 Refer to P 163 Check No 05 Refer to P 163 Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Note on resetting power supply To reset the machine power off status need to continue at least 30 sec N WARNING Turn off the power and turn it on again To cool down the electricals the outdoor unit fan gets started when the radiation fin temperature rises above 75 C even when the air conditioning is not operated and stops itself when it drops below 70 C Does the fault YES appear again Does the outdoor fan run NO Check No 02 Thermistor resistance check Fin thermistor Check the radiation fin temperature Does the thermistor meet the specification chart of thermistor NO Replace the fin thermistor Does the temperature exceed the temperature to stop opera
171. stor is disconnected Control for indoor unit freeze up protection Feedback Control 1 Discharge pipe temperature control Function and Control 37 Control Specification SiBE12 908 Detail expansion valve control Operation pattern When power is turned ON Y O function x not function Fully closed when power is turned ON Gas pipe isothermal control SC control Control when frequency changed Control for abnormally high discharge pipe temperature Oil recovery control The followings are the examples of control which function in each mode by the electronic Dew buildup prevention control for Indoor freeze prevention control indoor rotor Liquid pipe temperature control Cooling 1 room operation Y Open control when starting Control of target discharge pipe temperature Cooling 2 rooms operation Y Control when the operating room is changed Control of target discharge pipe temperature Stop y Pressure equalizing control Heating 1 room operation Y Open control when starting Control of target discharge pipe temperature Heating 2 rooms operation Y Control when the operating room is changed Control of target discharge pipe temperature Defrost control FD 1 Stop Y Pressure equal
172. t charge label supplied with the product l l l l l l l I l l I l l l l l The filled out label must be adhered in the proximity of the product charging port e g onto the inside of the stop valve cover Contains fluorinated greenhouse gases covered _ 1 factory refrigerant charge of the product see unit name plate L amp I by the Kyoto Protocol R410A kg i 2 additional refrigerant amount charged in the field 3 total refrigerant charge ik 2 4 Contains fluorinated greenhouse gases covered by the Kyoto Protocol F ON 5 outdoor unit 0 kg 7 3 6 refrigerant cylinder and manifold for charging 6 5 ee 4 NOTE National implementation of EU regulation on certain fluorinated greenhouse gases may require to provide the appropriate official national language on the unit Therefor an additional multilingual fluorinated greenhouse gases label is supplied with the unit Sticking instructions are illustrated on the backside of that label A CAUTION 1 Even though the stop valve is fully closed the refrigerant may slowly leak out do not leave the flare nut removed for a long period of time 2 Do not overfill with refrigerant This will break the compressor Installation Operation Manual 63 Installation Manual SiBE12 908 Refrigerant Piping Work
173. t operate HUMID HEAT operation or FRESH AIR SUPPLY VENTILATION and go into a standby state the multi monitor lamp will be yellow page 13 m To cancel HUMID HEAT operation 3 Press HUMIDIFY VENTILATE button and select a OFF e The multi monitor lamp will be red Return to HEAT operation NOTE m Notes on HUMID HEAT operation e The HUMID HEAT operation function is selectable only when the air conditioner is in HEAT operation e The operation sound of the air conditioner will rise by slightly while the air conditioner is in humidifying or ventilating operation e While the indoor unit in one room out of two is in HUMID HEAT operation the indoor unit in the other room will go into humidification stand by mode regardless of the selection of the HUMID HEAT operation function for the other room When the indoor unit in HUMID HEAT operation attains the target humidity the indoor unit in humidification stand by mode in the other room will start HUMID HEAT operation e The ability of the unit to humidify drops when the outdoor temperature and humidity are low or when the set airflow rate is low e The operation noise is higher than in normal HEAT e The outdoor noise or odor may be captured because the outdoor air is heated with the heater and resultant moisture is taken into the room for humidification e The top of the outdoor unit may get warm during operation but this is not a malfunction e The operation noise may change depending
174. t the maximum capacity OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the VDAIKIN frequency and fan speed on the outdoor unit This function is convenient during night E To start operation 1 Press POWERFUL and QUIET button and select an operation mode FAN e Choose the desired operation mode out of the following sequence ONOFF a e Each time the POWERFUL QUIET button is pressed a different setting option is displayed HUM C TEMP C on the LCD VA hd e Selectable functions vary with each operation mode and the ON OFF state MODE Sum CE 4 and R are displayed on the LCD 1 2 POWERFUL COMFORT SWING tele als E ar a i QUIET SENSOR While in operation in AUTO COOL HEAT or HUMID HEATING mode WEEKLY COPY BACK a NEXT A o SELECT OFF Y ON CANCEL EY While in operation in DRY or FAN mode a naea a E While not in operation in AUTO COOL HEAT or HUMID HEATING mode pal e4 e POWERFUL operation starts in 5 seconds and ends in 20 minutes Then the system automatically operates again with the previous settings which were used before POWERFUL operation When using POWERFUL operation there are some functions which are not available E To cancel operation 2 Press POWERFUL and QUIET button e Press the button to select
175. tact with the casing Is it passing sound YES gt Correct by hand or install piping weight heard from the pressure reducing valve Overfilling of refrigerant gt Apply sound insulation sheets of putty Air mixed in Flushing sound due to refrigerant shortage gt Conduct vacuum drying fill the refrigerant of specified volume R9433 Service Diagnosis 109 Troubleshooting SiBE12 908 2 6 Air does not humidified enough Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Hose length is not set Incorrect hose length setting Short circuited at outdoor unit Blocked humidification filter Insufficient heat insulation of duct Indoor ventilation is made too often Ceiling is very high 110 Service Diagnosis SiBE12 908 Troubleshooting Troubleshooting A Caution Confirm if the conditions where HUMID HEAT operation can run are satisfied Refer to page 10 or parts damage may be occurred Be sure to turn off power switch before connect or disconnect connector Are the conditions NO satisfied YES YES f Bi NO Is the priority room set Is it the room of priority setting NO YES Is the other unit in Humid HEAT operation YES aN gt Explain the conditions of HUMID HEAT operation to the user Explain to the user that the room of priority setting is humidified prior to t
176. tarting compressor for starting defrosting or resetting 4 When starting compressor for the first time after the reset with the power is ON 5 When starting compressor after operation stop by the cooling heating mode change over malfunction Set the lower limit frequency to A Hz for 60 seconds with any conditions with 1 through 5 above 40 class 50 class Cooling 56Hz 40Hz Heating 68Hz 54Hz 3 4 4 3 Minute Standby Prohibit to turn ON the compressor for 3 minutes after turning it off Except when defrosting Function and Control 31 Control Specification SiBE12 908 3 4 5 Compressor Protection Function When turning the compressor from OFF to ON the upper limit of frequency must be set as follows The function must not be used when defrosting 40 class 50 class Frequency FCG 1 62 55 FCG3 FCG 2 72 70 FCG2 FCG 3 90 85 FCG TCG 1 140 150 TCG2 180 180 Pia a a eB pa TCG 3 300 300 32 Function and Control SiBE12 908 Control Specification 3 5 Discharge Pipe Temperature Control Outline Detail The discharge pipe temperature is used as the compressor s internal temperature If the discharge pipe temperature rises above a certain level the operating frequency upper limit is set to keep this temperature from going up further Divide the Zone A C Stop zone B C Drooping zone A
177. tdoor temperature lowers by 5 C the humidifying capacity is decreased by about 15 When the outdoor humidity lowers by 20 the humidifying capacity is decreased by about 20 600 Humidifying hose length 4 0m Outdoor relative humidity 500 rated 450ml h Indoor 20 CDB Outdoor 7 CDB 6 CWB 87 RH 80 RH 70 RH 400 60 RH 50 RH 40 RH 30 RH 20 RH 100 Humidifying Capacity ml h w 8 10 8 6 4 Outdoor temperature C R9413 The max piping length is 15 m but the longer the length of the humidifying hose becomes the less the humidifying performance becomes Outdoor temp 7 CDB 6 CWB 105 0 og 100 0 a gE Poe temas ze o i E 95 0 N oO lt 25 amp 90 0 A B Soa gt es a b d e i f 3 Q gt lt gt lt gt lt gt gt Ta 85 0 80 0 2 3 4 5 6 TA 8 9 10 11 12 13 14 15 Applicable hose Hose diameter A KPMH996A10S I D 25mm B KPMH996A15S I D 30mm Hose length setting Hose length m R9414 a 3 0m b 3 1 4 0m c 4 1 6 0m d 6 1 8 0m e 8 1 10 0m f 10 1m Function and Control Main Functions SiBE12 908 1 8 FRESH AIR SUPPLY VENTILATION Operation FAN e ON OFF a HUM TEMP C FRESH AIR SUPPLY v VENTILATION R9425 Refe
178. tdoor unit match Make sure the wiring piping and humidifying hose from the indoor unit to the OK NG Humidifying hose _7 Maumigifying hose Piping lt Piping fn Wiring 3 A outdoor Wiring 1B unit gt c ea ROOM B lt lt Piping Humidifying hose Humidifying hose Installation Operation Manual SiBE12 908 Installation Manual Test Run and Final Check e Before starting the test run measure the voltage at the primary side of the safety breaker e Check that all liquid and gas stop valves are fully open e Check that piping and wiring all match 1 Test run and final check 1 To test cooling set for the lowest temperature To test heating set for the highest temperature Depending on the room temperature only heating or cooling but not both may be possible 2 After the unit is stopped it will not start again heating or cooling for approximately 3 minutes 3 During the test run first check the operation of each unit individually Then also check the simultaneous operation of all indoor units Check both heating and cooling operation 4 After running the unit for approximately 20 minutes measure the temperatures at the indoor unit inlet and outlet If the measurements are above the values shown in the table below then they are normal Cooling Heating Temperature difference between inlet and outlet Approx 15 C Approx 8 C
179. temperature YES NO well after the power supply turned off Cool it down Measure resistance between heater connectors gt Replace the thermistor NO Is the heater resistance appropriate At normal temperature 44 69 10 Check No 02 Is the resistance of NO humidification thermistor within normal range Turn on the power supply again and run the machine in HUMID HEAT test operation mode Does the humidification NO gt Replace the heater unit Replace the thermistor rotor motor run YES Does the air blow out from the hygroscopic fan Check No 05 Outdoor fan system check Does the air blow out from the humidification YES Is there foreign material gt Replace the humidification rotor motor At HUMID HEAT mode instead of test mode the ON timing of the hygroscopic fan may delay 20 min at maximum To 3 troubleshooting Include inside the humidification hose and indoor air intake filter gt Remove foreign material gt Replace the outdoor unit PCB R9457 Service Diagnosis 159 Troubleshooting SiBE12 908 2 38 Lights out of Microcomputer Status Lamp Remote Controller Display Outdoor Unit LED Ae 5e Display Method of When a microcomputer fault is detected LED A or LED 5 turns off Malfunction Detection
180. the 2 wireless remote controllers can be set for different addresses 1 Remove the metal plate electrical wiring cover Refer to the Removal attachment methods of metal plate electrical wiring covers ADDRESS 2 Cut the address jumper JA on the printed circuit board JA 3 Cut the address jumper J4 in the remote controller ADDRESS 1 2 J4 ADDRESS EXIST 1 CUT 2 4 When connecting to an HA system Wired remote controller central remote controller etc 1 Remove the metal plate electrical wiring cover Refer to the Removal attachment methods of metal plate electrical wiring covers 2 Attach the connection cord to the S21 connector and pull the harness out through the notched part in the figure 3 Replace the electrical wiring cover as it was and pull the harness around as shown in the figure HA connector Lay the HA cord as shown in the figure e Removal methods of metal plate electrical wiring covers 1 Remove the front grille 2 Remove the electrical wiring box 1 screw 3 Raise the 2 upper parts of the metal plate electrical wiring cover pull the parts frontward and remove the 3 tabs 4 Slide the metal plate electrical wiring cover upward and remove the 2 tabs on the lower side 3 Raise the 2 upper parts of the 4 Slide the metal plate electrical wiring metal plate electrical wiring cover cover up
181. the outdoor unit PCB When both the indoor unit and the outdoor unit PCBs are replaced simultaneously the set value is erased Troubleshooting AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check the preset hose length with the remote controller Has the hose length bech cet Set the hose length with the remote controller gt To other LA fault diagnosis R9423 How to check the preset hose length 1 Press 3 buttons TEMP A W MODE simultaneously St St is displayed A 2 Press TEMP A or Y button and select 7 B is J B 3 Press MODE button to enter the pipe check mode C is n Fa 4 Press TEMP A or button to change the display of the hose length D tg p lng beep 5 Long beep sound means that the display shows the preset hose length PE If you hear the long beep when the display is E the hose length is not set F7 g Service Diagnosis 123 Troubleshooting SiBE12 908 2 15 Freeze up Protection in Other Rooms Unspecified Voltage between Indoor and Outdoor Units ve U Remote rn et Controller Display Method of A wrong connection is detected by checking the combination of indoor and outdoor units on the Malfunction microcomputer Detection Malfunction m Operation halt due to the freeze up protection in
182. tion Replace the outdoor unit PCB y Check No 05 NO Outdoor fan system gt Replace the fan motor check Rectify the connector and the fan motor lead wire Replace the outdoor unit PCB Too dirty Radiation fin dirty gt Clean up the radiation fin Slightly dirty Check No 03 Installation condition check R9447 142 Service Diagnosis SiBE12 908 Troubleshooting 2 29 Temperature Rise in Radiation Fin Remote Controller Display Outdoor Unit LED Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes R Ad 59 Temperature rise in the radiation fin is identified based on the temperature of the radiation fin detected by the fin thermistor with the compressor on m The compressor stops when the radiation fin temperature is 86 C or more Fault condition is cleared when the radiation fin temperature is below 72 C Shut down when the error repeats 255 times Clear condition Continuous operation for 60 minutes Fin temperature rise due to defective outdoor fan Fin temperature rise due to short circuit Detection error due to defective fin thermistor Detection error due to improper connection of connector Detection error due to defective outdoor unit PCB Silicon grease is not applied properly on the heat radiation fin after replacing outdoor unit PCB Service Diagnosis 143 Troubleshooting SiBE12 9
183. tion will drop neither the frequency nor fan speed if the frequency and fan speed have been already dropped low enough 82 Installation Operation Manual SiBE12 908 Operation Manual 3 8 ECONO Operation ECONO Operation ECONO operation is a function which enables efficient operation by limiting the maximum power consumption value This function is useful for cases in which attention should be paid to ensure a circuit breaker will not trip when the product runs alongside other appliances E To start ECONO operation 1 Press ECONO button e x is displayed on the LCD J DAIKIN a conor m To cancel ECONO operation HUM TEMP w v 2 Press ECONO button again mo ow G 1 2 e x disappears from the LCD POWERFUL COMFORT SWING R unning current and a ave Las g QUIET SENSOR power consumption weey CS eo L sS Maximum during Normal normal operation BACK 4 NEXT operation ds l a a Maximum during OFF LY LON ECONO Mode CANCEL CV Time From start up until set a ei ai ee temperature is reached e This diagram is a representation for illustrative purposes only The maximum running current and power consumption of the air conditioner in ECONO mode vary with the connecting outdoor unit NOTE ECONO operation can only be set when the unit is running Pressing the OF
184. tor Caution or parts damage may be occurred Discharge pipe thermistor disconnected NO Check No 02 Check the thermistors Functioning Check No 17 Check the electronic expansion valve Functioning Check No 31 Check the four way valve Functioning Check No 12 Check the refrigerant line Functioning YES Malfunctioning gt Insert the thermistor in position Discharge pipe thermistor Malfunctioning gt Replace the discharge pipe thermistor Malfunctioning gt Replace the valve itself or the coil Malfunctioning gt Replace the four way valve coil or the valve itself Replace the outdoor unit PCB Refrigerant shortage x Water mixed Stop valve defective gt Refer to the refrigerant line check procedure gt Replace the outdoor unit PCB R9438 126 Service Diagnosis SiBE12 908 Troubleshooting 2 18 Compressor Lock Remote Controller Display Outdoor Unit LED Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Check No 14 Refer to P 166 Ad 5 Judging from current waveform generated when high frequency voltage is applied to the compressor The machine is shut down when the fault count reaches 16 Clear condition Continuous operation for 11 min without fault Compressor lock Disconnection of compressor ha
185. tor Causes Defective thermistor Defective indoor unit PCB For ui defective heat exchanger thermistor Cooling outdoor heat exchanger thermistor heating indoor heat exchanger thermistor Service Diagnosis 139 Troubleshooting SiBE12 908 Troubleshooting Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Turn on the power supply again Check No 02 Refer to P 162 Does the remote NO controller display the error code again YES Check No 02 Thermistor resistance check l gt Reconnect properly Is it OK No YES Check No 02 Thermistor resistance check NO gt Replace the thermistor YES gt Replace the thermistor Fy Radiation fin thermistor 3 Discharge pipe thermistor a Outdoor heat exchanger thermistor 5 Liquid pipe thermistor 3 Gas pipe thermistor 3 Outdoor air thermistor gt Replace the outdoor unit PCB R9446 140 Service Diagnosis SiBE12 908 Troubleshooting 2 28 Abnormal Temperature in Electrical Box Remote Controller Display Outdoor Unit LED Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Lis A 5 Temperature rise in the electrical box is identified based on the temperature of the radiation fin detected by the fin thermistor with the compres
186. ugh hole Install with a downward slope Humidifying hose e Right back piping e Right bottom piping asian is recommended to use asian elbow Cut out the piping through hole j A Humidifying hose 1 Wrap the pipes hoses and inter unit wiring using insulation tape as shown in the piping bundle diagram 2 Put all the pipes through the through hole in the wall and hook the indoor unit onto the mounting plate 3 Connect the pipes Mounting plate lt we 5 2 Left side left back or left bottom piping How to replace the drain plug and drain hose e Replacing onto the left side 1 Remove the insulation fixing screws on the right to remove the drain hose 2 Remove the drain plug on the left side and attach it to the right side 3 Insert the drain hose and tighten with the screws which were removed at STEP 1 Drain hose attachment position The drain hose is on the back of the unit fs Front side of unit z Left side Right side Attachment on the left side Attachment on the right side factory default Insulation Il ap fixing screw Il Drain hose _ J X Drain hose Indoor unit fixing screw How to set drain plug Do not apply lubricating oil refrigeration oil when inserting Application of causes deterioration and drain leakage of the plug Insert a hexagon wrench 4mm 10 Instal
187. ure and the operating frequency and operate for a specified time and then stop After 3 minutes of waiting restart the unit and check if any is disconnected If any is disconnected stop the system after operating for a specified time If the disconnection is detected 4 times in succession then the system will be down Function and Control 39 Control Specification SiBE12 908 Detail Detect Disconnection If a 780 second timer for open control becomes over the following adjustment must be made 1 When the operation mode is cooling When the discharge pipe temperature is lower than the outdoor heat exchanger temperature the discharge pipe thermistor disconnection must be ascertained 2 When the operation mode is heating only for heat pump model When the discharge pipe temperature is lower than the max temperature of operating room heat exchanger the discharge pipe thermistor disconnection must be ascertained When the condition of the above 1 or 2 is decided the system will stop after operating for continuous 9 minutes Adjustment when the thermistor is disconnected When compressor stop repeats specified time the system should be down 3 12 8 Control when frequency is changed When the target discharge pipe temperature control is active if the target frequency is changed for a specified value in a certain time period cancel the target discharge pipe temperature control and change the target opening of the electronic expansio
188. ut Remote Controller Display Outdoor UnitLED A 59 Display Method of Fault condition is identified by DC current which is detected before compressor startup Malfunction Detection Malfunction m When the DC voltage is 50 V or less Decision Conditions Supposed m Defective PCB Causes m Harness disconnection defective connection Troubleshooting AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Replace the outdoor unit PCB 134 Service Diagnosis SiBE12 908 Troubleshooting 2 24 Damper Abnormality wo Remote mo Controller Display Outdoor UnitLED Ax 5 Display Method of Detected by the limit switch LS in the humidification unit Malfunction Detection Malfunction m Limit switch does not turn on or off when the operation of humidification unit starts or Decision finishes For example when turning on the power supply when humidification operation Conditions including air intake starts Supposed Faulty damper operation due to frost Causes Faulty damper operation due to foreign material Limit switch fault including improper connection Defective motor for damper Troubleshooting AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Is the damper fixed YES due to frost NO Heat the damper unit and melt frost
189. utdoor units refer to the installation manual provided to the outdoor unit It is easier to connect the hose with the front grille removed Pulling out the humidifying hose in a B sideward direction Cuff Connect the cuff side of the Sa humidifying O hose to the N a indoor unit duct Humidifying hose nseto ibl Pulling out the daira i BE eS posse humidifying hose ina So Mat ere are no gaps downward direction e Left back piping 1 MHA Cut the cuff at this part If it is too long cut the humidifying hose SS The protrusion of the and bond the separately sold cuff with humidifying hose from the adhesive for vinyl to adjust the length Approx 100mm wall hole is about 100mm 52 Installation Operation Manual SiBE12 908 Installation Manual Laying piping hoses and wiring Connect the humidifying hose to the indoor unit duct See 4 Humidifying hose installation work for details Lay the piping drain hose and humidifying hose according to the orientation of the piping coming out of the unit as shown below Make sure the drain hose is sloped downward Wrap the piping drain hose and humidifying hose together using insulation tape Piping bundle diagram lt Inter unit wiring Gas pipe 9O O e Drain hose Liquid pipe Humidifying hose Insulation tape 5 1 Right side right back or right bottom piping e Right side piping Cut out the piping thro
190. ward and remove the 2 tabs on pull the parts frontward and the lower side remove the 3 tabs Z 2 Remove the electrical wiring box 1 screw 48 Installation Operation Manual SiBE12 908 Installation Manual e Attachment methods of metal plate electrical wiring covers Attach the metal plate electrical wiring covers as shown below 1 Lean the metal plate electrical wiring cover as shown in the figure and attach tab 1 on the lower side to the electrical wiring box 2 Attach tab 2 on the lower side of the metal plate electrical wiring cover Tab 1 z o g Z CAUTION Make sure that the shaded part E will not go inside the electrical wiring box Refrigerant Piping Work Rieti install as described in the installation manual supplied with the multi outdoor unit 1 Flaring the pipe end Cut exactly at 1 Cut the pipe end with a pipe cutter right angles Remove burrs 2 Remove burrs with the cut surface facing downward Flaring so that the chips do not enter the pipe Set exactly at the position shown below 3 Put the flare nut on the pipe yA Flare tool for R410A Conventional flare tool i ZE Clutch type Clutch type Rigid type Wing nut type Imperial type 4 Flare the pipe Die a 0 0 5mm 1 0 1 5mm 1 5 2 0mm 5 Check that the flaring is properly made Check Flare s inner The pipe en
191. wer off 2 Install the Inverter Analyzer instead of a compressor Note Make sure the charged voltage of the built in smoothing electrolytic capacitor drops to 10 VDC or below before carrying out the service work 1 Remove the faston terminals 2 Connect the faston terminals from the terminal block of to the terminals of the Inverter the compressor Analyzer Inverter Analyzer Be careful not to touch the terminals U V W each other Otherwise high voltage is applied R5160 Reference If the connector terminal of compressor is not a faston terminal difficult to remove the wire on the terminal it is possible to connect a wire available on site to the unit from output side of PCB Do not connect it to the compressor at the same time otherwise it may result in incorrect detection m How to activate inverter test mode Turn the power on Press the 3 buttons TEMPA TEMPY MODE on the remote controller simultaneously 3 Press TEMPA or W button and select 7 Press the MODE button to enter the trial operation mode Press the MODE button and select FAN mode Press the ON OFF button to start inverter test 166 Service Diagnosis SiBE12 908 Check 3 Diagnose method Diagnose can be made according to 6 LEDs lighting status as follows 1 When all LEDs are lit uniformly Compressor malfunction to be replaced 2 When some of LEDs are not lit LEDs are not lit or go off etc Check
192. y breaker H Earth leakage Round crimp style X To room B circuit breaker HOSRN 50Hz H 220 240v If the length of a connection wire is 10m or more use 2 0mm wire t ox 9 NG OK 3 Pull the wire and make sure that it does not disconnect Then fix the wire in place with a wire retainer Wire retainer Sal Use the specified wire type and connect it securely Make sure the electrical wiring does not come into contact with the gas piping Refer to the figure Make sure connecting the piping and connecting wiring fit into KAA Incorrect handling will make it hard to attach the stop valve cover causing deformation 13 ROOM A Liquid pipi Gas pipi ng ng ROOM B Liquid pipi Gas pipi ng ng ROOM B Firmly secure wire retainer so wire terminations will not receive external stress Also use the 2 screws located at the bottom of the packing case to tighten the four locations Be sure to clamp the wire for power source on this location Shape wires so that the stop valve cover fit securely o terminal lt oa Stranded wire oles fee Beaa Heke t NG Power supply ou
193. y is more than 56 Hz 40 class or 40 Hz 50 class Decision and when the input current is less than 0 25 A Conditions Input current is below 0 5 A m The machine shuts down when the fault occurs 4 times m Fault counter will be reset to zero if the machine will not stop during accumulated compressor operation time of 60 min after restored from fault conditions Supposed m Defective outdoor unit PCB Causes m Defective current transformer Troubleshooting AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Replace the outdoor unit PCB 138 Service Diagnosis SiBE12 908 Troubleshooting 2 27 Thermistor or Related Abnormality Outdoor Unit Tt 1 Remote Controller Display Outdoor UnitLED Ax 5 Display Method of This fault is identified based on the thermistor input voltage to the microcomputer Malfunction A thermistor fault is identified based on the temperature detected by each thermistor Detection Malfunction When power is supplied and the thermistor input is 4 98 V or more Decision or when the thermistor input is 0 02 V or less for 5 sec continuously Conditions For uti Discharge pipe thermistor lt heat exchanger thermistor is taken into consideration to identify the fault For 3 or ut although the system of the corresponding room will be shut down the outdoor unit can operate Supposed Improper connection of connec

(SiBE12

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