Home

TEST RUN SERVICE MANUAL

1. Outdoor unit control PC Board When operating in the snow sensor mode the unit will not operate by the effect of the freeze prevention External contact Snowfall sensor field supply 2WAY SYSTEM PCB Settings 1 Outdoor Unit Control PCB Table 1 Setting the System Address S002 Rotary switch black S003 2P DIP blue Outdoor 5002 S003 setting Outdoor 5002 S003 setting system setting 2P SEH setting 1P 2P address 10s digit 20s digit address 10s digit 20s digit 1 refrigerant 20 0 OFF system only R Go 21 1 OFF 1 1 OFF 22 2 OFF 2 2 OFF 23 3 OFF 3 3 OFF 24 4 OFF 4 4 OFF Link wiring 25 5 OFF 5 5 OFF 6 OFF 6 6 OFF 7 OFF 7 7 OFF 8 OFF 8 8 OFF 9 OFF 9 OFF 30 0 ON ON Link wiring 0 OFF 1 OFF 2 OFF 3 OFF 4 OFF 5 OFF 6 OFF F OFF 8 OFF 9 OFF Table 2 Table 3 Setting the Number of Indoor Units Setting the Number of Outdoor Units S004 Rotary switch red S005 3P DIP blue S006 DIP switch blue Number of S005 Settin Number of S006 Settin Indoor Units 2904 Setting i 3 Indoor Units 1 2 i 3 1 1 OFF OFF 2 2 OFF OFF OFF ON Table 4 Setting the Outdoor Unit address Outdoor Unit S007 Setting Address 2 3 1 OFF 2 OFF 3 OFF 4 ON 4 5 MEMO 4 6 2 WA
2. 5 4 2WAY SYSTEM Service Checker Contents 6 Service Checker 1 Outdoor Unit Maintenance Remote Controller oaeen en eneen eneen ARR RR 6 2 6 1 2WAY SYSTEM Service Checker 1 Outdoor Unit Maintenance Remote Controller 1 1 Overview E About the outdoor unit maintenance remote controller The outdoor unit utilizes non volatile memory EEPROM on its PCB This allows EEPROM data to replace the setting switches that were present on previous PCBs The outdoor unit mainte nance remote controller is used to set and change these EEPROM data In addition to setting and checking the outdoor unit EEPROM data this remote controller can also be used to monitor the outdoor unit alarm history monitor the various indoor and outdoor tempera tures and check the indoor unit connection status number of units operating mode etc Ourdoor unit maintenance remote controller does not function as an ordinary remote controller It is therefore only used for test runs and during servicing System Diagram Outdoor unit maintenance remote controller i 5 Outdoor unit Inter unit control wiring Special service checker wiring Servicing No CV6231785082 t Outdoor unit control PCB Indoor unit Indoor unit Remote Remote i controller controller Operation manual included in package troller to the outdoor unit PCB e Ord
3. simultaneously for 4 seconds or longer 2 If group control is in effect press the UNIT button and select the address unit No of the w al a Y al Move to position 2 and stay We al w al Move to position 3 and stay lt a ja a e X er uy al X a a wy uy al RK E Need wl Mt iE PI ze Move to position 4 and stay gt a ja a uy X indoor unit to set At this time the fan at the indoor Es a wy y Move to position 5 and stay a uy K pa Kee unit begins operating bah When the flap position is set to 4 lor 5 and the unit O GAG unit No or Ht 2 in the case of WW group control item code XX and settings data is in the cooling or dry mode the flap position is moved Y Y Y Y are displayed blinking on the remote to 3 and the operation is started refer to Fig 2 3 controller LCD display NOTE 4 Designate the item code XX by adjusting the The flap swings during the operation under Setting the Temperature Setting C a e buttons Flap Separately At this time the unselected flaps are moved to the position 1 refer to Fig 2 3 Press the button The display stops blinking and remains lit and setting Electrical component box Flap 1 XX 90 is completed If you wish to change the selected indoor unit follow Flap 4 the step 2 X
4. see 4 3 If No see 4 2 4 2 Since there is no error see what happens 4 3 Indoor control board defective replace board Exampe O Notes lA P16 Alarm Alarm code Alarm meaning Compressor 1 INV overcurrent alarm Alarm conditions This alarm occurs when current trouble or current detection trouble occur when trouble judgment current is detected in the primary or secondary current or when an instantaneous secondary current of 18A or higher is detected Changed to output error by current regardless of the inverter frequency In addition there are 6 horsepower and 10 horsepower compressors 1 When more than the over current values shown in the table were detected in the primary and secondary current 6 horsepower compressors 10 horsepower compressors 2 When more than the current values shown in the table are instantly detected in the secondary current Secondary 6 horsepower compressors 28A 10 horsepower compressors 36A X N lt of e HIC PCB Power terminal board Inverter compressor Probable cause There is a strong possibility of a compressor failure An alarm occurs for current detection trouble when it is judged that no current is flowing after start DCCT is damaged In this case the cause is a DCCT failure Check the power wiring and connector wiring It is possible to resolve this trouble by limiting the maximum frequency 3 23 2WAY SYST
5. 1 Address Settings Outdoor UNS EE 1 1 Mee WS RU E 1 2 2 Settings of Indoor Unit Control POB annen iten 1 3 3 Auto Address Setting s smossssssessresrrresraerresserrreorrrnrarrrrrrrrr SEERNE venen senrennen venen venen venennn 1 5 2 Remote Controller FUNCTIONS nanne ELLERS REENEN REENEN REENEN 2 1 1 Remote Controller Test Run Settings uus arnnn en ennen sene rer rr ann eens 2 2 2 Simple Settings Function ereccion icono 2 3 3 Detailed Settings Function ancora aorta 2 5 4 Remote Controller Servicing Functions nan anann en enen enn ennneer eneen vens 2 13 3 POUDI DIG ORN CT 3 1 1 Contents of Remote Controller Switch Alarm Diepl y 3 2 2 Outdoor Unit Control PCB LED RUE E 3 4 3 ZWA Ali E le EE 3 5 4 Blinking Inspection Display on Remote Controller aen 3 26 A A A T E A ENN 4 1 1 Outdoor Unit Control PO Bosses eeen 4 2 5 Self Diagnostics Function Table an sanennennnanenenneansenennnnnnnanennennnennnneneneenrnenenns 5 1 1 Self Diagnostics Function Table cccccsecseseecseceeeeesceeecceeescecesseeteeeesees 5 2 A A ne 6 1 1 Outdoor Unit Maintenance Remote Controller ennen 6 2 MEMO 2WAY SYSTEM Address Settings Contents 1 Address Settings Outdoor Units A La E 1 2 2 Settings of Indoor Unit Control PCB aaneen eneen eeneannnnnenanenennsnennenrnennanrsnnenn 1 3 3 Auto Address SEEING zeten nadoen eee Eee esdek 1 5 1 1 1 Test Run Test Run Procedure
6. E29 Outdoor unit INV failed to receive communications from another outdoor unit constant speed E25 Outdoor unit address setting failure duplication E26 Mismatch in outdoor unit quantity E29 Outdoor unit failed to receive communication from outdoor unit main Communication error between the microcomputers Out F23 F24 Low pressure sensor trouble Gas temperature sensor trouble at outdoor heat exchanger 2 In Gd Gd Gd Go Gd Go Go Go Go Go 22 AA m od dk m 9 F24 Liquid temperature sensor trouble at outdoor heat exchanger 2 Out Outdoor unit non volatile memory EEPROM trouble I BI RIQDININI IIOOIO oo md Constant speed compressor 2 overcurrent alarm Compressor 1 oil detection sensor connection trouble H2 3 5 7 Compressor 2 oil detection sensor connection trouble Compressor 3 oil detection sensor connection trouble HIC trouble alarm 3 3 3 wh wesch wesch wh wh wesch wesch wesch wesch wh sch m wesch E Oro lN OD Oo Ol SS Bi 3 5 2WAY SYSTEM Trouble Diagnosis 3 2WAY Alarm Codes 3 3 3 3 Compressor 1 INV overcurrent alarm Compressor 2 discharge temperature trouble Compressor 3 discharge temperature trouble High load alarm Fan motor trouble Inverter compressor missing phase or lock alarm Blinking Inspection Display on the remote CHE
7. 2 1 2 2 2 3 These numbers are necessary for later maintenance Please be sure to indicate them Checking the indoor unit addresses Use the remote controller to check the indoor unit address lt If 1 indoor unit is connected to 1 remote controller gt 1 Press and hold the button and E button for 4 seconds or longer simple settings mode 2 The address is displayed for the indoor unit that is connected to the remote controller Only the address of the indoor unit that is connected to the remote controller can be checked 3 Press the button again to return to normal remote controller mode Number changes to indicate which indoor unit is currently selected Indoor unit address lt If multiple indoor units are connected to 1 remote controller group control gt 1 Press and hold the button and E button for 4 seconds or longer simple settings mode ALU is displayed on the remote controller Next press the button 4 The address is displayed for 1 of the indoor units which is connected to the remote controller Check that the fan of that indoor unit starts and that air is discharged 5 Press the button again and check the address of each indoor unit in sequence Go 6 Press the button again to return to normal remote controller mode Number changes to indicate which indoor unit is currently selected Indoor unit address MEMO 1 12 2WAY SYSTEM Remote Controller Functions Co
8. A D conversion failure Electrical noise Clogging of capillaries Trouble Compressor discharge temperature does not decrease even when the liquid valve is ON Check When the liquid valve is operating and the liquid valve is ON check that the secondary side of the liquid capillaries is cold 2 Insufficient refrigerant Trouble Liquid effectiveness is poor Check Check whether or not the superheating temperature is declining if the evaporator mechanical valve is opened to 300 pulses or more after checking for foreign object intrusion 3 Foreign object intrusion Trouble Liquid valve effectiveness is poor Check Check that there is no difference in the condensation or frost conditions between the strainer primary side and secondary side tubing 4 Crossed thermistor Trouble The discharge temperature of the other compressor is high although only this compressor is operating When the liquid valve turns ON the discharge temperature of the other compressor decreases 5 Accumulation of refrigerant in stopped outdoor units Trouble e System is OK when all outdoor units are operating however symptoms of insufficient gas occur when a certain outdoor unit is stopped e Condensation or frost is visible up to the top of the accumulator of the stopped outdoor unit e After an outdoor unit stops there is the sound of refrigerant flowing into an outdoor unit that was stopped for a long time e When an outdoor unit starts after b
9. OC 008 8 C 0010 010 10 C 10 C e RE 008 8 C 0010 0001 0002 0003 10 C ae 006 ER 7 C 18 C Lower limit at time of shipping 19 C 0007 0018 0019 0029 0030 0016 0017 29 C 30 C Upper limit at time of shipping 16 C 17 C Lower limit at time of shipping 0029 0030 0018 0019 29 C 30 C 18 C 19 C Upper limit at time of shipping Lower limit at time of shipping 0029 0030 0017 0018 29 C 30 C 17 C 18 C Upper limit at time of shipping Lower limit at time of shipping 0026 0027 0000 0001 Ignore heat exchanger temperature conditions 0000 Filter input differential pressure switch input 0001 Alarm input for trouble input about air cleaner or similar device 0002 Humidifier input Operates linked with drain pump when humidifier is ON 0000 Present Setting at time of shipping 0002 None 0000 Normal Used as optional relay PCB or JEMA standard HA terminal 0001 Used for OFF reminder 0002 Fire prevention input 2 8 26 C 27 C Normal Upper limit at time of shipping 2WAY SYSTEM Remote Controller Functions 3 Detailed Settings Function Item Setting data No Description Automatic drain pump T 0000 entilation fan operation 0001 Ventilation fan operated by remote controller i 0000 Not used Body sensor is used Wired remote controller sensor 0001 Remote control sensor
10. Recheck the items to check before the test run Have the outdoor sub units been connected sl lt Outdoor unit control PCB gt Unit No setting switch S007 Set the unit address lt Outdoor unit control PCB gt Unit No setting switch S006 Set the No of outdoor units lt Outdoor unit control PCB gt Unit No setting switch S004 and S005 Set the No of indoor units Are the inter unit control wires connected to more than 1 refrigerant system Check the link wiring lt Outdoor unit control PCB gt YES Unit No setting switch S002 and S003 Set the system address When multiple outdoor main units exist disconnect the terminals extended from the shorted plugs CNO72 at all outdoor main unit PCBs except for 1 Alternatively move the sockets to the OPEN side Is it possible to turn ON the power only for the 1 refrigerant system where the test run will be performed NO Will automatic address setting be performed in Heating mode CASE 3B YES CASE 3A Is it OK to start Is it OK to start the the compressors compressors Turn ON the indoor and outdoor unit power 2 Turn ON the indoor and outdoor unit power 2 Short circuit the cooling side of the Short circuit the automatic mode change pin CN085 on the outdoor Ge deg DER i address pin CN054 on the At the same time short circuit the outdoor main unit PCB for 1 automatic address pin C
11. Then perform automatic address setting again e Display details of LEDs 1 and 2 on the outdoor unit control PCB xt ON Blinking e OFF LED 1 LED 2 Display meaning After the power is turned ON and automatic address setting is not in progress no communication with the indoor units in that system is possible After the power is turned ON and automatic address setting is not in progress 1 or more indoor units are confirmed in that system however the number of indoor units does not match the number that was set Automatic address setting is in progress KEES Automatic address setting completed Note AN indicates that the solenoid is fused or that there is a CT detection current failure current is detected when the compressor is OFF e Remote controller display is blinking ve TAM EEE Soma AH Grid TD RC No A SET DATA NENU ERROR TEST e El vi NET AEN e oe C arl BROOD PE 2 WAY SYSTEM Address Settings 3 Auto Address Setting Request concerning recording the indoor outdoor unit combination Nos After automatic address setting has been completed be sure to record them for future reference List the outdoor main unit system address and the addresses of the indoor units in that system in an easily visible location next to the nameplate using a permanent marking pen or similar means that cannot be abraded easily Example Outdoor 1 Indoor 1 1 1 2 1 3 Outdoor 2 Indoor
12. table and seconds to several minutes after automatic address setting is started correct the problem See page 3 2 to 3 4 En Check the alarm details on the Outdoor LED 1 and 2 on the outdoor unit control PCB indicate that automatic Unit Control PCB LED 1 and 2 Alarms address setting is in progress the LEDs blink alternately for several then correct the problem minutes after automatic address setting is started the compressors may also start and stop several times however LED 1 and 2 never indicate that automatic address setting is completed turn OFF e If alarm E15 E16 or E20 appears after automatic address setting is started check the following items Alarm display Alarm description The number of indoor units detected during automatic address setting was smaller than the number of E15 indoor units which was set with switch S004 and S005 on the outdoor unit PCB The number of indoor units detected during automatic address setting was larger than the number of indoor E16 units which was set with switch S004 and S005 on the outdoor unit PCB The outdoor unit received no serial signals from indoor units within 90 seconds after automatic address E20 setting was started 5 2 2 WAY SYSTEM Self Diagnostics Function Table 1 Self Diagnostics Function Table Check items E15 E16 E20 Check that the indoor unit power is turned ON O O Check that the inter unit control wiring is connec
13. this occurs for a comparatively short time only In these cases a mode automatic backup mode that limits operation may be engaged e Control is not possible when a communications system alarm has occurred Automatic backup mode is not engaged in order to avoid causing secondary damage 3 26 2 WAY SYSTEM Trouble Diagnosis 4 Blinking Inspection Display on The Remote Controller Blinking inspection display 2 compressor magnet SW seizing detection Blinking inspection display Alarm meaning Compressor magnet SW seizing detected Status Although an outdoor unit exists where the outdoor unit fan is running no compressors in the system are operating yy Because the fan is running only at the outdoor unit where seizing was detected check the corresponding outdoor unit The fan may also run on its own when fan cracking prevention control is in effect or when snowfall sensor input is present Therefore monitor for approximately 10 minutes if the outdoor unit fans are operating at multiple units Alarm conditions Current is detected in the CT circuit when the compressor is stopped 1 This control is not engaged for the first 30 seconds after the compressor turns ON gt OFF 2 For 1 minute following the first 30 seconds after the compressor turned ON OFF the threshold for the detected current is 10 A or more continuing for 2 seconds 3 All times other than the above e If the low pressure SW has not activated the thres
14. 08 Heat exchanger 1 liquid temp sensor 07 Operating BS timer Heat exchanger 1 gas temp sensor FO6 lamps blinking Compressor intake temp sensor suction temp 12 SR High pressure sensor F16 xt x Ow pressure sensor F17 Heat exchanger 2 liquid temp sensor F24 Heat exchanger 2 gas temp sensor F23 Ceiling panel connection failure lt lt PO9 gt gt Timer and heat Protective Indoor unit hermal protector in indoor unit fan motor is activated lt lt P01 gt gt ready lamp blinking device loat switch is activated an inverter protection function activated altemately lt lt P10 gt gt lt lt P12 gt gt 0136130 Outdoor unit O gas sensor activated P i Compressor thermal protector is activated Power supply voltage is unusual P02 More than 260V or less than 160V between L1 and L2 phase Compressor 1 INV discharge temp trouble P Operating and heat High pressure switch P04 ready lamp blinking FEE altemately Reverse phase missing phase detected P DCCT ACCT overcurrent P16 i Compressor 2 constant speed discharge temp trouble P17 Compressor 3 constant speed discharge temp trouble P18 High load alarm P20 xt xt Outdoor unit fan trouble P INV compressor start failure Missing phase or lock alarm P i T de T N Ex Oxygen Oo al de N 29 Operating and timer lamp blinking Failure of nonvolatile memory IC EEPROM on indoor unit control PC
15. KEE Io GL LL o Fig 2 6 2 12 4 Remote Controller Servicing Functions List of Servicing Functions 2WAY SYSTEM Remote Controller Functions Operation with Test run forced thermostat ON Sensor Temperature temperature display from each display sensor Servicing check display Alarm history display Filter lifetime operating mode priority central control address and other settings Simple settings System address indoor unit address central control address and other settings Detailed settings Automatic address setting based on command from the wired remote controller Automatic address Change of indoor Address change nit address Press and hold the button for 4 seconds or longer Press and hold the and buttons for 4 seconds or longer Press and hold the and buttons for 4 seconds or longer Press and hold the and EV buttons for 4 seconds or longer Press and hold the J and buttons for 4 seconds or longer Press and hold the and the timer operation 4 buttons for 4 seconds or longer Press and hold the and the timer operation v buttons for 4 seconds or longer COPY CO TIMER OFF 2 13 Press the button Automatic reset Press the button Current operation is maintained When settings are made from a remote controller the indoor unit where that remote controller is connected stops Entire system stops 2WAY SY
16. LED a Yj DO23 LED1 CH DO24 LED 2 3 Terminal plug CNO72 0053 RC1 plug EEPROM ZR sla ERC memory IC iN IC014 on jon RC plug SE cis af 2 CNO77 f ise B ee Sg R220 R221 amp wu Fa mem OC plug i CN001 BE Wo Ke gr High pressure d IK sensor A 008 ul Low pressure Comp Comp Liquid temp Suction sensor discharge discharge sensor at heat temp LPS 1 temp 2 temp exchanger 1 2 SCT EMG plug DISCH1 DISCH2 EXL1 2 CN073 Gas temp Oil detection Comp Outdoor sensor sensor discharge air temp at heat OIL1 2 3 3 temp AIR TEMP exchanger 1 2 DISCH3 EXG1 2 4 2 2WAY SYSTEM PCB Settings 1 Outdoor Unit Control PCB Functions for CR C1155DXHN8 Automatic address setting 2P plug white Automatic address setting pin CN054 e Short circuit this pin for 1 second or longer to automatically set the addresses at the indoor units that are connected to that outdoor unit and are within the same system e The system address is 1 at the time of shipment Automatic address setting is necessary even for communications lines in a single system where the inter unit control wiring does not cross to any other systems e While automatic address setting is in progress the 2 LEDs LED1 2 red on the outdoor unit control PCB blink alternately Short circuiting this pin while automatic address setting is in progress will stop the automatic address setting operation S002 Rotar
17. Sample displays of connected indoor unit Nos Display of unit No 1 D am am Display of unit Nos 1 and 2 D En ma Display of unit Nos 1 2 and 3 8 La aa d ES e Display of unit Nos 1 2 3 and 4 The change of the colon display between unit Nos 1 20 to unit Nos 21 40 occurs automatically every 10 seconds However the display does not change if there are no higher number units connected To change the display to the higher number units before 10 seconds have passed press the FLAP button E An 8 digit display is used for display of the compressor total operating time in 1 hour units e When the first 4 digits are displayed the top dot of the colon is illuminated Figure A e When the last 4 digits are displayed the colon dot is OFF Figure B The display of the first 4 digits and last 4 digits changes automatically after 10 seconds The display can also be changed by pressing the FLAP button Pr D i We al lt Compressor s total operating time gt A and B are displayed alternately The example here 0000 0062 indicates 62 hours a md KN Sample Display A B With the outdoor unit maintenance remote controller when connected to the outdoor unit the unit remote controller check functions will not operate 6 6 2WAY SYSTEM Service Checker 1 Outdoor Unit Maintenance Remote Controller 1 4 Mo
18. address setting in group control Duplicated indoor unit priority priority indoor unit E Duplicated indoor unit priority non priority indoor unit and ER dete ead as SEN outdoor unit simultaneously ndoor unit address is not set xt xt O 00 lt lt L09 gt gt L17 L18 Mismatch of outdoor unit type way valve operation failure Duplication of outdoor R C address setting 104 I Operating and heating ready lamps blinking L10 simultaneously Group control wiring is connected to individual control indoor unit E Indoor coil temp sensor E1 Operating and Indoor coil temp sensor E3 EG 7 alternately Indoor suction air room temp sensor l Indoor discharge air temp sensor es TE Continued O gt OVS ied ied DT po Di Di O O E lt lt CH CH O O o o CD CD O O A a o Se 2 e o O O O O s G c gt D Hui 5 3 O O eb An CD O i CT Indoor unit Z WAN SYSTEM Trouble Diagnosis 1 Contents of Remote Controller Switch Alarm Display ON O Blinking XL OFF Wired remote control displa Wireless remote controller receiver display Possible cause of malfunction Operation Standby for heating Lo lt Thermistor fault Outdoor unit Compressor 1 INV discharge temp sensor F04 Compressor 2 constant speed discharge temp sensor FOS Compressor 3 constant speed discharge temp sensor F22 Outdoor air temp sensor
19. as for the alarm history monitor performed from the indoor unit remote controller However the unit No display shows the outdoor unit address 2 Press the UNIT button and select the outdoor unit for which to monitor the alarm history Press the temperature setting CA J and CY buttons and select the item code for the alarm history The selected outdoor unit address the item code and the alarm history alarm data are displayed The outdoor unit address is displayed as R C XX YY R C XX Outdoor unit system address YY Outdoor unit address Item codes 01 08 are displayed O1 indicates the most recent alarm The alarm history displays the alarm code If no alarms are present then __ __ is displayed 4 To clear the alarm history press the CANCEL button The outdoor unit alarm history will be cleared To exit press the 4 CHECK button The display returns to the normal display 2WAY SYSTEM Service Checker 1 Outdoor Unit Maintenance Remote Controller 1 6 Setting the outdoor unit EEPROM data A Display of first 4 digits This function is used to make the outdoor unit EEP ROM data settings E Setting mode 1 Press and hold the CHECK button and the Le VENTILATION button simultaneously for 4 seconds or longer Press the temperature setting az Jand Cv buttons to change the item code The item codes and setting data are shown in the table of List
20. colorimetric method Optical regeneration deodorant filter High performance filter 65 by JIS colorimetric method Deodorant filter 65 by JIS colorimetric method Table 3 Table of DC Fan Motor Tap Settings Slim Low Static Ducted type Setting No 0000 Standard setting at time of shipping 0001 High ceiling setting Discharge grille purchased separately is installed 0003 q 2 way lowered ceiling system Hi 1 3 Setting No EO 1 3 2WAY SYSTEM Remote Controller Functions 3 Detailed Settings Function Selecting the DC fan motor tap when setting from the PCB e 4 Way Cassette lt Procedure gt Stop the system before performing these steps Open the electrical component box cover then check the indoor unit control PCB Fig 2 5 2 Connect the jumper connector 2P yellow which was supplied with the accessory to the correct connector pin on the indoor unit control PCB according to the setting number which was confirmed in Table for DC Fan Motor Tap Settings Setting No 3 Then connect the jumper connector to the connector pin TP3 2P yellow on the indoor unit control PCB Setting No 6 Then connect the jumper connector to the connector pin TP6 2P white on the indoor unit control PCB CR SX80FQ IE FA4B18120700 0 1c009 1C008 E O Joo Ja Oan ala Fig 2 5 A IE LEES e Ceiling lt Procedure gt Stop the system before performing these steps Open the el
21. remote controller and system remote controller Blinking inspection display 1 Automatic backup Blinking inspection display Alarm meaning Automatic backup is in progress A C units can be operated Status The compressor at one of the outdoor units where the outdoor unit fan is running should be operating Blinking inspection display also occurs when seizing of the compressor magnet SW is detected Because this may also be the case refer to Blinking inspection display compressor magnet SW seizing detection Alarm conditions When alarm P16 P22 P29 Hx1 Hx2 or H31 has occurred correcting the control device remote controller etc input engages this mode Probable cause Because alarm P16 P22 P29 Hx1 Hx2 or H31 has occurred check the alarm history then refer to the corresponding items Follow the instructions in the corresponding items to correct the trouble Recovery After repairing the malfunctioning locations reset the power for the system all outdoor units Caution Automatic backup mode will not be canceled until the power is reset Notes Automatic backup mode is not engaged in cases of alarms other than those listed above Reasons There is no need for automatic backup if recovery is possible by correcting the remote controller input e With alarms for which automatic recovery is possible such as sensor alarms the presence of electrical noise may result in a new alarm However it is believed that
22. snow sensor Silent Socket Socket for silent mode 2P White CN056 Used for installing the external timer for the silent mode 1 4 2WAY SYSTEM Address Settings 3 Auto Address Setting Auto Address Setting Basic wiring diagram Example 1 e If link wiring is not used The inter unit control wires are not connected to multiple refrigerant systems Indoor unit addresses can be set without operating the compressors No 1 main outdoor unit settings No of indoor units System address system 1 setting S002 8005 lt No 2 sub unit No 3 sub unit settings settings i S007 er S006 S007 Unit S007 outdoor r ON Unit number an number ON ON units 3units P a NI setting Q setting m a 2 Bo Unit No 1 5 5 off Unit No 3 Leave the socket that is used to short circuit the nl terminal plug nl Outdoor Unit No 1 CN072 9 No 3 Main Sub i Sub Inter outdoor unit Inter outdoor unit control wiring control wiring Inter unit control wiring Indoor Unit 1 1 1 2 1 3 O Remote controller Remote controller DW communication wiring 1 Automatic Address Setting from the Outdoor Unit 1 To set the number of outdoor units on the outdoor main unit control PCB set the No of outdoor units DIP switch S006 to VA 3 units and set the unit No DIP switch S007 to h u u unit No 1 main outdoor unit Vv T 2 3 OFF 1 2 3 O
23. the fixed wiring in accordance with the wiring rules To prevent possible hazards from insulation failure O the unit must be grounded When Transporting Be careful when picking up and moving the indoor and outdoor units Get a partner to help and bend your knees when lifting to reduce strain on your back Sharp edges or thin aluminum fins on the air conditioner can cut your fingers When Installing Ina Room Properly insulate any tubing run inside a room to prevent sweating that can cause dripping and water damage to walls and floors Keep the fire alarm and the air outlet A SE at least 1 5 m away from the unit IN Moist or Uneven Locations Use a raised concrete pad or concrete blocks to provide a solid level foundation for the outdoor unit This prevents water damage and abnormal vibration In an Area with High Winds Securely anchor the outdoor unit down with bolts anda metal frame Provide a suitable air baffle Ina Snowy Area for Heat Pump type Systems Install the outdoor unit on a raised platform that is higher than drifting snow Provide snow vents e When performing piping work do e Do not touch the air inlet or the not mix air except for specifled AN CAUTION sharp aluminum fins of the refrigerant R410A in refrigeration outdoor unit You may hurt cycle It causes capacity down and e Do not sit or step on the unit AN EEE risk of explosion and injury due to you may fall down accident
24. the following to determine whether a sensor or PCB failure has occurred Step 1 Connect the other compressor discharge sensor or a discharge sensor where the F04 alarm has not occurred to the connector for this compressor on the PCB Measure the temperature at the same point a location where temperature fluctuations are small and check whether there is a temperature difference Difference gt A PCB or sensor failure is possible No difference PCB and sensor are normal If an abnormality was found at Step 1 connect the problem compressor sensor to the other compressor connector on the PCB or to the PCB connector of a device where the F04 alarm has not occurred Measure the temperature at the same point a location where temperature fluctuations are small and check whether there is a temperature difference Difference gt Sensor failure No difference PCB failure XX It is convenient at this time to have a discharge temperature sensor on hand 2 Crossed wiring or installation error Trouble Although the other compressor is operating and this compressor is stopped the discharge temperature of the other compressor does not increase and the discharge temperature of this compressor rises The discharge temperature remains high immediately after the compressor stops Wait for some time after the compressor stops and observe Check for crossed wiring and installation errors 6 7 Check 1 Continued 3 10 Z WAN SYST
25. the top point of the colon is illuminated To exit setting mode press the CHECK button Returns to normal display mode Du ja Da Refrigerant type C and D are displayed alternately Example shows 0000 0410 R410A List of Item Codes Parameter Outdoor unit capacity 201012
26. then it is possible that over charging may have occurred During heating There is an indoor unit where refrigerant flow is poor E1 temperature and discharge temperature are low and the mechanical valve of that unit is opened to 300 pulses or more and the E1 temperature is close to room temperature However be aware that this kind of data results often when there is a height difference between indoor units Reducing the amount of refrigerant will improve the refrigerant flow however reducing it too much will increase the likelihood of alarms related to low oil level scroll side the low pressure SW and discharge temperature Use caution Example This alarm may result when the service valve is closed or when valve leakage particularly from the mechanical valve occurs F17 Alarm Low pressure sensor trouble Alarm conditions 1 Sensor short circuit ETS Sars CO 1 Sensor malfunction including connector 2 PCB malfunction Check 1 Measure the sensor resistance Check that the sensor is operating normally 2 Use a remote monitor or a PC monitor to check the temperature that is recognized by the microcomputer F31 Alarm Alam gode Je O O OOOO O OOO OOOO Outdoor unit non volatile memory EEPROM trouble Alarm conditions Non volatile memory is not present when power initialization occurs Read values do not match after writing to non volatile memory is complete Probable cause Check 3 14 2 WAY SYSTEM Tro
27. to 1 O oo OJo Z Ra SE Ge IW H E Set to 1 FEL NS Bun CON DH VAA A Set to 4 O Examples of refrigerant circuit R C address settings required when link wiring is used S003 S002 System address S003 System address S002 System address No 2P DIP oy blue Rotary switch black men Set to 1 O Examples of the No of outdoor units SE S006 ote i fg e Address setting of main outdoor unit S007 Address setting of outdoor unit S007 unit No Setting 3P DIP switch blue Unit No 1 main unit M I factory setting 2 dg Zoe Gao En O Address setting of sub outdoor unit Address setting of outdoor unit S007 Unit No setting 3P DIP switch blue N ON Unit No 2 sub unit 2 ON 8 1 2 3 O N Unit No 3 sub unit 1 amp 2 ON 1 2 3 F ON Unit No 4 sub unit 3 ON ES The sub unit control PCB contains the same switches as the main unit control PCB for No of indoor units No of outdoor units and system address However it is not necessary to set these switches 1 3 2WAY SYSTEM Address Settings 2 Settings of Indoor Unit Control PCB CN077 LED1 D023 SY 5007 S PEI p CN085 e DS Se i gt CN056 s Enn Nr N E A lg NA DS KH CN057 ES We CN049 a BA CN050 gt CN072 CN052 Ss oe CN053 Se S LED2 D024 el 0 CN054 S010 S005 S004 S002 S003 Name And Function Of Each Switch On Outdoor Unit Con
28. units was too few when automatic address setting was performed Probable cause 1 The number of indoor units set at the indoor unit quantity setting SW S004 S005 on the outdoor unit PCB is too many 2 The inter unit control wiring between indoor units has been cut Check 1 Refer to the test run servicing materials and check the indoor unit quantity setting SW S004 S005 2 Check the inter unit control wiring at the indoor and outdoor units Correction After correcting the indoor unit quantity setting or the inter unit control wiring perform automatic address setting again 8JP022 9 0 JP021 9 JP020 bow Les O Y oy Ka e Notes 5 2 S 48 e dede A gt Y D y j e f H gt d VA f Ww lt s 4 CA gt ana PZ q4 a e IC AP BI onp gl SM R503 CNOS1 gt 4 s OA H 060 0073 GA NOLOE 1 U i 4848482 4 CN052 Fra weg 20 Ze BAN d RUN al _ Le pd e S gt dr DA R506 a KE Ne ar mm gt Ce 0090095 0096 D097 25883 y AR o D077 0076 D086 0084 0085 CECR ig vy be gt ae PCB ASSY BA a gt gt SR 5 BREE CR Cis06DXHo E 2WAY SYSTEM Trouble Diagnosis 3 2WAY Alarm Codes E16 Alarm Alarm conditions e The number of indoor units was too many when automatic address setting was performed AAA After initial communications were completed an unrecognized unit was detected Probable cause 1 The number of i
29. 2 e A connecting socket 3P black is attached to the terminal plug at the time of shipment from the factory e In the case of link wiring which combines the inter unit control wiring for multiple systems into a single communications circuit leave the connecting socket in place at only one of the outdoor units and move the socket from the SHORT side to the OPEN side at all other outdoor units If multiple connecting sockets are left in place communications trouble will occur LED1 2 LED red x 2 D023 D024 e LED 1 and 2 blink alternately while automatic address setting is in progress e Display the alarm contents for alarms which were detected by the outdoor unit Power LED LED red Power indicator D515 Indicates the DC 5V power on the outdoor unit control PCB 2P plug white Start pin Short circuit this pin and apply a pulse signal to start all indoor units in that refrigerant system 2P plug white Stop pin Short circuit this pin and apply a pulse signal to stop all indoor units in that refrigerant system AP 2P plug white Vacuuming pin REES e To perform vacuuming of the outdoor unit short circuit this pin and then turn the power ON All solenoid valves turn ON and vacuuming begins smoothly Do not perform automatic address setting at this time e Release the short circuit to return the unit to normal status Mode 3P plug white Indoor unit Heating Cooling mode change pin CN085 e When o
30. 3 OFF 3 On the outdoor main unit control PCB check that the system address rotary switch S002 is set to 1 and that the DIP switch S003 is set to 0 N VA These are the settings at the time of factory shipment d 1 2 OFF 4 To set the number of indoor units that are connected to the outdoor unit to 13 on the outdoor main unit control PCB set the No of indoor units DIP switch S005 to 1 A 3 R EN and set the rotary switch S004 to 3 d 1 2 3 OFF Turn on power to all indoor and outdoor units in the system 6 Short circuit the automatic address pin at the outdoor main unit CN054 for 1 second or longer then release it Communication for automatic address setting begins To cancel again short circuit the automatic address pin CNO54 for 1 second or longer then release it The LED that indicates automatic address setting is in progress turns OFF and the process is stopped Be sure to perform automatic address setting again Automatic address setting is completed when LEDs 1 and 2 on the outdoor main unit control PCB turn OFF J 7 Next turn the power ON only for the indoor and outdoor units of the next different system Repeat steps 1 5 in the same way to complete automatic address settings for all systems 8 Operation from the remote controllers is now possible To perform automatic address setting from the remote controller perform steps 1 5 then use t
31. B F29 simultaneously SEH Operating and timer lamp blinking F31 simultaneously E Failure of nonvolatile memory IC EEPROM on outdoor unit control PCB Compressor 2 constant speed Compressor 3 constant speed Compressor 2 constant speed No current detected when o Connection failure of oil detection sensor Compressor 2 constant speed Compressor 3 constant speed Fusing of electromagnetic contact Current detected when compressor was OFF CHECK Automatic backup operation only blinking No display changes lt lt gt gt alarm indication Does not affect the operation of other indoor units lt gt alarm indication In some cases may affect the operation of other indoor units 3 3 O Protective device N A 2 Discharge temp sensor trouble 2WAY SYSTEM Trouble Diagnosis 2 Outdoor Unit Control PCB LED Display O ON xt Blinking OFF LED RED Display meaning 1 2 O O After the power is turned ON and automatic address setting is not in progress no communica PEC nn tion with the indoor units in that system IS possible Both ON O O After power is turned ON and automatic address setting is not in progress one or more indoor A ees ae eee ren units are confirmed in that system however the number of indoor units does not match the OFF ON number that was set O O Automatic address setting was completed successfully After the po
32. C EIERE zeit 1 Press the remote controller timer time button and button at the Er kaf ee same time Press and hold for 4 seconds or longer 2 Next press either the temperature setting Ca Jor CY button Check that the item code is A1 3 Use either the or button to set the system No to perform automatic address setting 4 Then press the button Automatic address setting for one refrigerant system begins When automatic address setting for one system is completed the system returns to normal stopped status lt Approximately 4 5 minutes is required gt During automatic address setting Banie is displayed on the remote controller This message disappears when automatic address setting is completed 5 Repeat the same steps to perform automatic address setting for each successive system 1 9 2WAY SYSTEM Address Settings 3 Auto Address Setting Display during automatic address setting e On ued main unit PCB LED 2 Do not short circuit the automatic address setting pin CN054 again while automatic address UU i setting is in progress Doing so will cancel the setting operation and will cause LEDs 1 and 2 to Blink lay ER When automatic address setting has been successfully completed both LEDs 1 and 2 turn OFF LED 1 is DO23 LED 2 is D024 If automatic address setting is not completed successfully refer to the table below and correct the problem
33. CK blinking 1 3 26 controller CHECK blinking 2 3 27 2 WAY SYSTEM Trouble Diagnosis 3 2WAY Alarm Codes E06 Alarm Alarm meaning Outdoor unit failed to receive serial communication signals from indoor unit Alarm conditions Outdoor unit failed to receive serial communication signals from indoor unit Probable cause 1 The indoor unit power was cut OFF after initial communications were completed 2 An open circuit or short circuit occurred in the inter unit control wiring after initial communications were completed Check Check the power at the indoor and outdoor units and check the inter unit control wiring Correction O Example Notes This alarm is detected after initial communications are completed Therefore it does not occur in cases of disconnected serial connector no terminal unit set or other trouble that occurs before initial communications are completed If initial communications have not been completed alarm E04 occurs E12 Alarm Automatic address setting start is prohibited Alarm conditions Automatic address setting was started when automatic address setting was in progress at another outdoor unit in the same link Probable cause Automatic address setting is in progress at another outdoor unit unit PCB progress Then start automatic address setting again Example Notes E15 Alarm Automatic address setting alarm too few units Alarm conditions The number of indoor
34. EM Trouble Diagnosis 3 2WAY Alarm Codes 3 Leakage from the discharge tube check valve Trouble Although the other compressor is operating and this compressor is stopped the discharge temperature of this compressor rises together with the temperature of the other compressor 4 The ambient temperature around the outdoor unit when it is stopped is 43 C or higher 5 If the cause is still unknown after checking the above then it is possible that electrical noise is the cause of the trouble It is necessary to provide a line filter or carry out other noise countermeasures Correction Replace the sensor Replace the outdoor unit PCB 1 2 3 Carry out noise countermeasures 4 Repair the refrigerant tubing 5 Adjust the amount of refrigerant 6 Correct the trouble Notes This alarm does not indicate that the sensor is disconnected In order to prevent overheating during operation the outdoor units in this system will not allow a compressor to start if the discharge temperature does not decrease while the compressor is stopped If a sensor malfunction results in continuous detection of a high discharge temperature then the compressor may stop for no apparent reason The purpose of this alarm is to facilitate identification of the problem in this case F06 F23 Alarm Alarm code POE Alarm meaning Gas temperature sensor trouble at outdoor heat exchanger 1 Gas temperature sensor trouble at E outdoor heat exchan
35. EM Trouble Diagnosis 3 2WAY Alarm Codes P20 Alarm High load alarm Alarm conditions The high pressure increase is not rapid but the alarm occurs when the horsepower down does not meet the anticipated time Probable cause 1 Forgot to open the valve 2 Operation failure of mechanical valve 3 Idle away of outdoor fan Correction O Example P22 Alarm Alarm meaning Fan motor trouble Fan motor start failure fan motor Hall IC input failure Possible causes are a Hall IC input circuit failure and a fan HIC failure Check Check the fan motor wiring the Hall IC wiring and the connector connections If the wiring and connectors are normal then check that the capacitor of the Hall IC input circuit is securely soldered on the outdoor unit control PCB Also use a tester and measure the resistance between fan HIC power HIC and ground HIC If there is a short circuit there is an HIC malfunction tica R102 A est BO Ge Aus A30C5 Y hed F CH e CA 5 5 9 5 L A D e gt 20 1 e aa me u D e p E i 7 pu Sns a 02 2003 3 S cua Ti C033 ep Sy I 1D 3 DY 399 wu gt Fas gt COLSR DSRODE F 13239 toa Z 54 N kV D co co 0090 CC 112993209 7 ek ity Ce y N C022 GONTT TOUCH ids SC H C145 DK J a Din N a BE CHECK D SCHARGE GC D e e We ce MOTOR e S NET 0 72 30 TOTAR Ki 1FA4B1B 22800 1 E Fa
36. N 2 On the No 2 sub unit control PCB set the unit No switch S007 to FEF unit No 2 ON On the No 3 sub unit control PCB set the unit No switch S007 to m m i unit No 3 T 2 3 3 On the outdoor main unit control PCB check that the system address rotary switch S002 is set to 1 and that the DIP switch S003 is set to Fr ON 0 These are the settings at the time of factory shipment OFF 4 To set the number of indoor units that are connected to the outdoor unit to 10 on the outdoor main unit control PCB set the No of indoor units DIP switch S005 to E A 1 and set the rotary switch S004 to 0 d 1 2 3 OFF Turn ON the power to the indoor and outdoor units On the outdoor main unit control PCB short circuit the automatic address pin CN054 for 1 second or longer then release it Communication for automatic address setting begins To cancel again short circuit the automatic address pin CN054 for 1 second or longer then release it The LED that indicates that automatic address setting is in progress turns OFF and the process is stopped Be sure to perform automatic address setting again Automatic address setting is completed when LEDs 1 and 2 on the outdoor main unit control PCB turn OFF i 7 Operation from the remote controllers is now possible To perform automatic address setting from the remote controller perform steps 1 to 5 then use the remote controller and comp
37. N054 for 1 second or longer then release it Start indoor and outdoor unit heating operation LED 1 and 2 blink alternately Start indoor and outdoor unit cooling operation LED 1 and 2 blink alternately NO Are LEDs 1 and 2 on the outdoor unit PCB OFF YES Check that test run preparation is OK Do not allow the short circuited pins to remain short circuited Set the wired remote controller for test run Refer to the Does system remote controller operate YES test run settings Return remote control to normal mode End test run The unit with the unit No set to 1 is the main unit 3 All other units i are sub units NO CASE 1 Check and make corrections according to Table of Self Diagnostic Functions 2WAY SYSTEM Address Settings Items to Check Before the Test Run 1 Turn the remote power switch on at least 5 hours before the test in order to energize the crankcase heater 2 After performing the leak inspection applying vacuum and performing refrigerant charge for the tubing which is connected on site fully open the outdoor unit service valve However if only one outdoor unit is installed a balance tube is not used Therefore leave the valve fully closed When replacing the control PCB be sure that the settings on the new PCB match those on the old PCB 4 Use caution when making the settings If there are duplicated system addresses or if the setti
38. PA SSC unit units 2 units BN i setting unit LET 8 HL d setting 1 2 3 OFF No 1 3 OFF 1 Outdoor unit Unit Move the socket system 2 No 1 to the OPEN side Main CNO72 Inter outdoor unit control wiring NZ i To other system Indoor unit link wiring Remote controller Remote communication wiring controller Make settings as appropriate for the cases listed below Refer to the instructions on the following pages e Indoor and outdoor unit power can be turned ON for each system separately e Indoor and outdoor unit power cannot be turned ON for each system separately Automatic address setting in Heating mode Automatic address setting in Cooling mode 2 WAY SYSTEM Address Settings 3 Auto Address Setting Automatic Address Setting no compressor operation e Indoor and outdoor unit power can be turned ON for each system separately Indoor unit addresses can be set without operating the compressors Automatic Address Setting from Outdoor Unit 1 On the No 1 main unit control PCB set the unit No switch S007 t o i a unit No 1 On the No 2 sub unit control PCB set the unit No switch S007 to r unit No 2 2 3 On the No 3 sub unit control PCB set the unit No switch S007 to R m unit No 3 2 8 2 To set the number of outdoor units on the outdoor main unit control PCB set the No of outdoor units DIP switch S006 to rr 2 3 units 1 2
39. Panasonic TEST RUN SERVICE MANUAL 2WAY SYSTEM E Model No Outdoor Unit Ges se top T2HP up TGHP BHP 20HP U 8ME1E8 U 10ME1E8 U 12ME1E8 U 14ME1E8 U 16ME1E8 U 18ME1E8 U 20ME1E8 ME1 Model Name U 8ME1E8E U 10ME1E8E U 12ME1E8E U 14ME1E8E U 16ME1E8E U 18ME1E8E U 20ME1E8E Indoor Unit Cas 2 28 45 56 29 1 140 160 lome E emoes awe oever somes ome emme same omme olma same sams aars oane same loans same raue Tom ome eme eme aen aoe emoe somos Lewe S 36MT1E5 S 45MT1E5 S 56MT1E5 S 73MT1E5 S 106MT1E5 S 140MT1E5 S 22MK1E5 S 28MK1E5 S 36MK1E5 S 45MK1E5 S 56MK1E5 S 73MK1E5 S 106MK1E5 NET 3 140 EE S 73ME1E5 S 106ME1E5 S 140ME1E5 S 224ME1E5 S 280ME1E5 85464849287001 REFERENCE NO SM830187 01 IMPORTANT Please Read Before Starting This air conditioning system meets strict safety and operating standards As the installer or service person it is an important part of your job to install or service the system so it operates safely and efficiently For safe installation and trouble free operation you must e Carefully read this instruction booklet before beginning O Follow each installation or repair step exactly as shown Observe all local state and national electrical codes e This product is intended for professional use Permission from the power supplier is required when installing the
40. STEM Remote Controller Functions 4 Remote Controller Servicing Functions Test Run Function 2 3 ca REMOTE CONTROLLER O loo O Operates the unit with the thermostat forced ON lt Procedure gt D Press and hold the button for 4 seconds or longer 2 Test appears on the remote controller LCD display Fig 2 7 Start operation 4 Press the button to return to normal remote _ EN PROGRAM a controller display P 2WAY SYSTEM Remote Controller Functions 4 Remote Controller Servicing Functions B Sensor Temperature Display Function displayed regardless of whether unit is operating or stopped The procedure below displays the sensor tempera tures from the remote controller indoor unit and out door unit on the remote controller lt Procedure gt 1 Press and hold the and buttons simultaneously for 4 seconds or longer The unit No X X main unit No item code XX sensor address and servicing monitor H XX sensor temperature are displayed on the remote controller LCD display See Fig 2 8 at right 3 Press the temperature setting Ca _ CY buttons and select the item code to the address of the sensor to monitor For the relationships between the sensor addresses and sensor types refer to the table of temperature sensors and addresses below 4 If group control is
41. U 8ME1E8 E outdoor unit that is connected to a 16 A distribution network e This equipment complies with EN IEC 61000 3 12 provided that the short circuit power Ssc is greater than or equals to the values corresponding to each model as shown in the table below at the interface point between the user s supply and the public system It is the responsibility of the installer or user of the equipment to ensure by consultation with the distribution network operator if necessary that the equipment is connected only to supply with a short circuit power Ssc greater than or equals to the values corresponding to each model as shown in the table below OA U I0MEES E U 12MEtES E U 14ME1E8 E U 16ME1E8 E U 18ME1EB E U 20ME1E8 E O This equipment complies with EN IEC 61000 3 11 provided that the system impedance Zmax is less than or equals to the values corresponding to each model as shown in the table below at the interface point between the user s supply and the public system Consult to the supply authority for the system impedance Zmax JU A0ME1EB E U 12MEES E U t4ME1EB E U 16ME1E8 E U 18ME1E8 E U 20ME1E8 E e Pay close attention to all warning and caution notices given in this manual This symbol refers to a hazard or unsafe EEE practice which can result in severe personal injury or death This symbol refers to a hazard or unsafe practice which can result in AN CAUTION personal injury or product or property damag
42. X 93 Flap 2 XX 91 D Press the button to return to normal remote controller display SANNE UNIT No i YYYY XX rn 4 RC No SET DATA CODE No REMOTE CONTROLLER U 2 6 2WAY SYSTEM Remote Controller Functions 3 Detailed Settings Function List of Detailed Setting Items Setting data Item No Description No Description No Description 0001 4 Way Casstte 60x60 U1 Y1 0002 2 WAY Cassette L1 0003 1 Way Cassette D1 Low Silhouette Ducted F1 High Static Pressure i Type TTT Slim Low Static Ducted M1 Ducted E1 wee eon i Concealed Floor 0008 Wall mounted K1 0010 Floor Standing P1 0011 Standing R1 0001 22 Type 22 0003 28 Type 28 0005 36 Type 36 71 Type 73 0007 45 Type 45 0009 56 Type 56 0011 Indoor unit 0007 AG mm Typ FIN S 71MP1E5 and S 71MR1E5 capacity 80 Type 73 Except S 71MP1E5 S 71MR1E5 9913 90 Type 90 0015 112 Type 106 0017 140 Type 140 0018 160 Type 160 0021 224 Type 224 0023 280 Type 280 Item code lt Q am rn Des QS ez ma pp O O 0001 Unit No 1 0099 Not set 0001 Unit No 1 0002 Unit No 2 0003 Unit No 3 d Unit No 64 Not set Indoor unit address 0064 0099 0000 Individual 1 1 Indoor unit with no group wiring 0001 Main unit One of the group control indoor units control ad
43. Y SYSTEM Self Diagnostics Function Table Contents 5 Self Diagnostics Function Table 1 Self Diagnostics Function Table coordinan nns nn ARENA ARR ARR RR ARENA RR RARE RR RR RNA RR 5 2 5 1 2WAY SYSTEM Self Diagnostics Function Table 1 Self Diagnostics Function Table Self Diagnostics Function Table e Causes and corrections in instances when automatic address setting cannot be started Trouble Cause and correction The power LED D515 on the outdoor unit control PCB does not turn ON Check for any errors in the power wiring to the outdoor unit and check for a missing phase LED 1 and 2 on the outdoor unit control PCB do not turn OFF when the Check the Alarm Display table and outdoor unit power is turned ON and automatic address setting cannot correct the problem be started See page 3 2 to 3 4 An alarm appears immediately when automatic address setting is started from the wired remote controller Nothing happens when the operator attempts to start automatic address Check that the wired remote controller wiring setting from the wired remote controller and the inter unit control wiring are connected correctly Check that the indoor unit power is ON e Causes and corrections in instances when automatic address setting starts but cannot be completed successfully Trouble Cause and correction An alarm appears on the wired remote controller sometime from several Check the Alarm Display
44. able to replenish a large amount of refrigerant compared to conventional individual air conditioners If a single unit of the multi air conditioner system is to be installed in a small room select a suitable model and installation procedure so that if the refrigerant accidentally leaks out its density does not reach the limit and in the event of an emergency measures can be made before injury can occur In a room where the density may exceed the limit create an opening with adjacent rooms or install mechanical ventilation combined with a gas leak detection device The density is as given below Total amount of refrigerant kg Min volume of the indoor unit installed room m lt Density limit kg m The density limit of refrigerant which is used in multi air conditioners is 0 3 kg m ISO 5149 1 If there are 2 or more refrigerating systems in a single refrigerating device the amount of refrigerant should be as charged in each independent device For the amount of charge in this example LEEST Indoor unit SS s ES mn ess Room B Room C Room D Room E Room F The possible amount of leaked refrigerant gas in rooms A B and C is 10 kg The possible amount of leaked refrigerant gas in rooms D E and Fis 15 kg e g charged Outdoor unit amount 10 kg e g charged amount 15 kg Room A DM RoHS This product does not contain any hazardous substances prohibited by the RoHS Direct
45. ailure Removing a coil that is on will result in a clicking sound Also removing a coil that is off will not produce such a sound 12 Check whether too much refrigerant has been charged Too much refrigerant has been charged if the sub cool temperature of the condenser is 15 C or more Replace damaged components and correct the amount of charged refrigerant Example Notes P05 Alarm Alarm code Alarm meaning Alarm conditions Probable cause Check Correction Example Notes 3 22 Z WAN SYSTEM Trouble Diagnosis 3 2WAY Alarm Codes P14 Alarm Alarm code Alarm meaning O2 sensor operation Alarm conditions 1 It is judged an error whenever the outdoor unit receives the signal O2 Alarm Generated from the indoor unit 2 With the indoor unit s EEPROM setting item code OB set to 0001 the EXCT input was shorted Probable cause S Check and 1 System configuration Correction 1 1 Is an O2 sensor being used If Yes see 3 1 If No see 2 1 2 Indoor EEPROM setting 2 1 Is the EEPROM setting item code OB on the indoor control board set to 0001 If Yes see 3 1 after modification If No see 4 1 3 EXCT wiring 3 1 Is the EXCT socket wire shorted If Yes Modify the wiring If No see 4 1 4 Indoor control board 4 1 Is the alarm triggered if the EXCT socket wire is disconnected and the power is reset If Yes
46. alfunction e Sensor wiring is partially disconnected resulting in increased electrical resistance yx This alarm does not occur when the wiring is cut or when the connector is not connected to the outdoor unit PCB 2 Crossed wiring or installation error e The discharge temperature sensor of that compressor is connected to the discharge tube of the other compressor e The connector for the discharge temperature sensor of the problem compressor is connected to the outdoor unit PCB connector for the other compressor 3 Outdoor unit PCB failure 4 The check valve on the discharge tube for that compressor is wet 5 An air short blockage in the area around the outdoor unit has increased the outdoor unit ambient temperature reducing the cooling effects after the compressor stops 6 There is a cause that results in PO3 P17 or PO2 alarm Electrical noise 1 Sensor malfunction and outdoor unit PCB failure Trouble e Constantly indicates a high temperature e When monitoring software or other means are used for monitoring the discharge temperature at times fluctuates suddenly and wildly e In some cases the precise temperature may not be known even when monitoring software is used e Wiggle the sensor and check whether the trouble continues e Check whether the connector is partially disconnected from the PCB yy An F04 alarm will not result if the connector is completely disconnected circuit is open e If the cause is still uncertain check
47. ally E high tension inside the refrigerant e Do not stick any object into the SR VER FAN CASE S Refrigerant gas leakage may cause You may be injured and the fire unit may be damaged A Ventilate the room well in the event that is refrigerant gas leaks during the installation Be careful not to allow contact of the refrigerant gas with a flame as this will cause the generation of poisonous gas Keep all tubing runs as short as possible Use the flare method for connecting tubing Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them then tighten the nut with a torque wrench for a leak free connection Check carefully for leaks before starting the test run Do not leak refrigerant while piping work for an installation or re installation and while repairing refrigeration parts Handle liquid refrigerant carefully as it may cause frostbite When Servicing e Turn the power OFF at the main power box G mains before opening the unit to check or repair electrical parts and wiring e Keep your fingers and clothing away from any moving parts e Clean up the site after you finish remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced e Do not clean inside the indoor and AN EE outdoor units by users Engage authorized dealer or specialist for cleaning In case of malfunction of this appliance do not repair by yours
48. ant system set the number of connected indoor units For details refer to Table 2 S005 DIP switch 3P blue Switches for setting the 10s 20s and 30s digit for the number of connected indoor units e If 10 systems or more are set the setting is made by a combination of this DIP switch and S004 e If 10 19 systems are set set only switch 1 10s digit to ON e If 20 29 systems are set set switch 2 20s digit to ON and set switch 1 10s digit to OFF e f 30 39 systems are set set only switch 3 30s digit to ON For details concerning S004 and S005 refer to Table 2 S006 DIP switch 3P blue Switch for setting the number of outdoor units e Turn the switches ON according to the number of outdoor units 1 4 For details refer to Table 3 S007 DIP switch 3P blue Unit No setting switch e The setting is 1 at the time of shipment For details refer to Table 4 S010 DIP switch 4P blue Backup operation switch If an INV compressor has malfunctioned turn CT1 ON and Back Up SW ON to operate the outdoor unit using only the constant speed compressor If a constant speed compressor has malfunctioned turn CT2 ON and Back Up SW ON to operate the outdoor unit using only the INV compressor Disconnect the wiring from the constant speed compressor 4 3 Z WAN SYSTEM PCB Settings 1 Outdoor Unit Control PCB Terminal plug 3P plug black For communications circuit impedance matching CNO7
49. arm conditions This alarm occurs when a unit other than a R410A refrigerant model is connected Probable cause 1 A unit that uses R407C refrigerant or a R22 model unit was connected by mistake 2 The connected unit is correct however the refrigerant type setting in the outdoor unit EEPROM item code 80 is incorrect Check 1 Check the refrigerant type at the connected unit 2 Use the outdoor unit maintenance remote controller and check the item code 80 refrigerant type If the setting is incorrect change it to R410A Correction Exampe O Notes The outdoor unit maintenance remote controller is required in order to set the refrigerant type in the outdoor unit EEPROM L18 Alarm Alarm meaning way valve operation failure Alarm conditions During heating operation Comp ON the highest detected temperature at an outdoor unit heat exchanger EXG 1 EXG 2 EXL 1 or EXL 2 was 20 C or more above the outdoor air temperature Air Temp continuously for 5 minutes or longer or the detected suction temperature SCT was 20 C or more above the outdoor air temperature continuously for 5 minutes or longer 1 The 4 way valve connector 20S CNO22 has become disconnected from the control PCB 2 The 4 way valve circuit is locked malfunctioning 1 2 1 Check the 4 way valve connector 20S CN022 If the connector is normal check the 4 way valve wiring and the PCB circuit Correction If the connector is normal correct
50. at compressor 1 compressor 2 or compressor 3 Alarm conditions This alarm occurs when a connector connection pins 1 and 2 for compressor 1 pins 4 and 5 for compressor 2 and pins 7 and 8 for compressor 3 is open Probable cause Disconnected connector Check that the connector is securely connected Correction Connect the connector 1 2 Correct the connection at connector pins 4 and 5 Example l gt e O Notes S O 3 18 Z WAN SYSTEM Trouble Diagnosis 3 2WAY Alarm Codes H31 Alarm Alarm conditions This alarm occurs when the microcomputer identifies a trouble signal indicating abnormal HIC temperature or other trouble from the HIC The HIC judges the current and temperature and outputs the trouble signal In general this indicates trouble with the HIC itself Probable cause Overcurrent in HIC circuit and the resultant abnormal heating caused by HIC failure Check the power wiring and connector wiring If the wiring and connectors are normal use a tester to measure the resistance between the compressor HIC power HIC and ground HIC If there is a short circuit there is an HIC malfunction e IFA4BIB125900 2 HIC C1806DXH8 HIC Je A n 6oHr E JOYWHOSIO MOE 50 7 u gt Ud D Bel e GH r Sa be LES FALTO amp Noe a VEER NBE TF vaas de XK If an HIC failure is found replace the PCB Turn OFF the power and check the continuity of HIC and HIC on t
51. control PCB blink alternately e In the case of indoor unit group control if there is a mistake in the group control wiring addresses may not be set even if Hau SETTING appears e Even if alarm E15 or E16 appears addresses are set at those indoor units which could be verified The set addresses can be checked using the wired remote controller e If one of the below alarms appears when the remote controller is operated after automatic address setting was completed LED 1 and 2 on the outdoor unit control PCB are turned OFF follow the instructions in the table below and correct the problem location Remote controller Cause display Nothing is The remote controller is not connected correctly power trouble displayed The indoor unit power was cut off after automatic address setting was completed The remote controller is not connected correctly remote controller receiving trouble EO1 The remote controller of an indoor unit where the indoor unit address is not set is inadvertently operated Communications with the outdoor unit are not possible The remote controller is not connected correctly trouble with sending of the signal from the E02 remote controller to the indoor unit PO9 The indoor unit ceiling panel connector is not connected correctly 9 3 2WAY SYSTEM Self Diagnostics Function Table 1 Self Diagnostics Function Table e The outdoor unit maintenance remote controller can be used t
52. dress 0002 Sub unit All group control indoor units except for main unit 0099 010 Shifts intake temperature by 10 C Shifts intake temperature by 9 C Not set Cooling 001 Shifts intake temperature by 1 C ES 0000 No intake temperature shift temperature 0001 Shifts intake temperature by 1 C 0009 0010 Shifts intake temperature by 10 C Automatic 0000 Function disabled stop time alar 0001 Stops automatically 5 minutes after operation starts operation 0002 Stops automatically 10 minutes after operation starts 0123 Stops automatically 615 minutes after operation starts in S minute 0124 Stops automatically 620 minutes after operation starts 0125 Stops automatically 625 minutes after operation starts Shifts intake temperature by 9 C 2 7 2WAY SYSTEM Remote Controller Functions 3 Detailed Settings Function wens tem IL 1B Forced thermostat ON IL time Cooling discharge temperature shift Heating discharge temperature shift Temperature shift for cooling heating change in Auto Heat Cool mode Change to remote control temperature setting range Upper limit Lower limit L l Upper limit LO Lower limit Filter CN70 input switching T10 terminal switching Humidifier operation Indoor unit electronic control valve Setting data Description 0000 0001 010 5 minutes 4 minutes 10 C
53. e If Necessary Get Help These instructions are all you need for most installation sites and maintenance conditions If you require help for a special problem contact our sales service outlet or your certified dealer for additional instructions In Case of Improper Installation The manufacturer shall in no way be responsible for improper installation or maintenance service including failure to follow the instructions in this document SPECIAL PRECAUTIONS WARNING When Wiring ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH ONLY A QUALIFIED EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked Highly dangerous electrical voltages are used in this system Carefully refer to the wiring diagram and these instructions when wiring Improper connections and inadequate grounding can cause accidental injury or death Ground the unit following local electrical codes Connect all wiring tightly Loose wiring may cause overheating at connection points and a possible fire hazard Provide a power outlet to be used exclusively for each unit and a power supply disconnect circuit breaker and earth leakage breaker for overcurrent protection should be provided in the exclusive line Provide a power outlet exclusively for each unit and full disconnection mean having a contact separation in all poles must be incorporated in
54. e For inspection MEMO 2 16 Z WAN SYSTEM Trouble Diagnosis Contents 3 Trouble Diagnosis 1 Contents of Remote Controller Switch Alarm Display aanname nnn nn nn nennen 3 2 2 Outdoor Unit Control PCB LED Display nnee nennen KENE EEN REENEN REN 3 4 3 2WAY EE annetd ennn 3 5 4 Blinking Inspection Display on the Remote Controller aanne 3 26 3 1 2WAY SYSTEM Trouble Diagnosis 1 Contents of Remote Controller Switch Alarm Display ON O Blinking 3 OFF Wired Wireless remote controller receiver display remote control display Possible cause of malfunction Operation for heating Serial Remote controller is detecting Error in receiving serial communication signal Signal from communication error signal from indoor unit main indoor unit in case of group control Outdoor system errors address indoor unit address or indoor unit address Mis setting independent main sub unit setting has not been made Auto address is not completed Error in transmitting serial communication signal Indoor unit is detecting error signal from remote controller and system controller Operating lamp blinking Le lt E01 gt lt E02 gt A A dr CH O V V Indoor unit is detecting error e Error in receiving serial communication signal signal from outdoor unit e When turning on the power supply the number of connected indoor units does not correspond t
55. e at outdoor heat exchanger 2 F24 Liquid temperature sensor trouble at outdoor heat exchanger 2 F31 Outdoor unit non volatile memory EEPROM trouble HO Compressor 1 CT sensor disconnected or short circuit HO5 HOG Low pressure trouble H08 Compressor 1 oil detection sensor connection trouble H11 Constant speed compressor 2 overcurrent alarm H12 Constant speed compressor 2 lock current alarm H13 Compressor 2 CT sensor disconnected or short circuit H15 Compressor 2 discharge temperature sensor disconnected H21 Compressor 3 overcurrent alarm H22 Compressor 3 lock current alarm H23 Compressor 3 CT sensor disconnected or short circuit H25 Compressor 3 discharge temperature sensor disconnected H27 Compressor 2 lock current alarm H28 Compressor 3 lock current alarm H31 HIC trouble alarm L04 Outdoor unit address duplication L10 Outdoor unit capacity not set L17 Outdoor unit model mismatch L18 4 way valve operation failure P02 Compressor thermal protector is activated trip only and no alarm P03 Compressor 1 discharge temperature trouble P04 High pressure switch activated POS Reverse phase or missing phase detected capacity mismatch P14 O2 sensor is activated P16 Compressor 1 overcurrent P17 Compressor 2 discharge temp trouble P18 Compressor 3 discharge temp trouble P20 High load alarm P22 Fan motor trouble P29 Inverter compressor missing phase or lock alarm
56. e display stops blinking and remains lit and setting is completed D Press the button to return to normal remote controller display 2WAY SYSTEM Remote Controller Functions CZ RTC2 Fig 2 1 2WAY SYSTEM Remote Controller Functions 2 Simple Settings Function List of Simple Setting Items Item code Setting data No Description 0000 Not displayed 0001 150 hours 0002 2 500 hours 0003 5 000 hours 0004 10 000 hours 0005 Use the filter clogging sensor 0000 Standard setting at time of shipping Degree of filter fouling 0001 Highly fouled Filter sign ON time is reduced to one half the set time 0001 Central control address 1 0002 Central control address 2 0003 Central control address 3 Central control address 0064 0064 Central control address 64 SECH No central control address set setting at time of shipping Di Some LS O000 Normal setting at time of shipping priority change 0000 MED 1 min LO 3 min O S Fan speed when 0001 MED heating thermostatis 0002 LO II OFF En Mn ii a 0006 Shifts intake temperature 6 C down Electric heater 0000 No heater installation 0001 Heater installed Humidifying when 0000 No setting at time No setting at time of shipping No setting at time of shipping heater thermostat is Permit prohibit 0000 Permit automatic heating cooling 0001 Prohibit B
57. ectrical component box cover then check the indoor unit control PCB Fig 2 6 Q Connect the jumper connector 2P yellow which was supplied with the accessory to the correct connector pin on the indoor unit control PCB according to the setting number which was confirmed in Table 2 Table of DC Fan Motor Tap Settings e f the setting No is 1 then connect the jumper connector to the connector pin TP1 2P red on the indoor unit con trol PCB e f the setting No is 3 then connect the jumper connector to the connector pin TP3 2P yellow on the indoor unit control PCB e 1 Way Cassette lt Procedure gt Be sure to turn OFF the main power source before performing the steps below Open the electrical component box cover then check the indoor unit control PCB Fig 2 6 2 Connect the jumper connector 2P yellow which was supplied with the accessory to the correct connector pin on the indoor unit control PCB according to the setting number which was confirmed in Table 3 Table of DC Fan Motor Tap Settings e When using with the high ceiling settings Connect the jumper connector to the connector pin TP1 2P red on the indoor unit control PCB e When using with the discharge grille purchased separately attached 2 way lowered ceiling system Connect the jumper connector to the connector pin TP3 2P yellow on the indoor unit control PCB White Yellow Red EE TP6 TP3 TP1 Cc Eom JEE
58. eeken 0000 Normal y 0001 0001 Cool only Set 1 for item code OD e In order to avoid water leakage and damage to the fan do not set for humidifying when the thermostat is OFF unless a vaporizing humidifier is used Filter sign ON time filter lifetime e Consider the device purpose and type when changing the settings Incorrect settings may result in malfunction e Do not change any setting data that does not appear in this list 2 4 3 Detailed Settings Function e This allows the system address indoor unit address and other settings to be made for the indi vidual or group control indoor unit to which the remote controller used for detailed settings is con nected 2WAY SYSTEM Remote Controller Functions When detailed settings mode is engaged opera tion stops at the individual or group control indoor unit where the remote controller used for detailed settings is connected Simple settings items can C No SETDATA also be set at this time lt Procedure gt Press and hold the 4 and buttons simultaneously for 4 seconds or longer 2 Gama unit No f I or HL in the case of ce 059 5 group control item code f fv and settings data HU XX are displayed blinking on the remote controller LCD display Fig 2 2 At this time the indoor unit fan or all indo
59. eing stopped for a long time the start is accompanied by much vibration e Representative parts include the liquid capillaries secondary side of capillaries will be cool during cooling operation mechanical valve mechanical valve bypass check valve sound of refrigerant flow can be heard and stops when the liquid valve is closed hot gas defrost valve if valve secondary side remains hot even after much time has passed be careful not to mistake transmitted heat for a valve failure e Ice is growing on the lower parts of some outdoor unit heat exchangers but not on others Because this trouble may occur even in outdoor units with a high operating rate under conditions of insufficient gas caution is needed 6 Sensor failure Check This alarm is likely to occur when wiring is partially cut It is difficult to identify even when continuity is checked The detected discharge temperature is high e Although such conditions rarely occur a PO2 alarm is likely if the detected discharge temperature is low e Replace the sensor with another discharge sensor and compare the temperature conditions gt Nw Nw gt Nw gt Ny Check 7 If the cause is still unknown after checking the above then it is possible that electrical noise is the cause of the trouble Correction 1 Replace the sensor 2 Replace the outdoor unit PCB 3 Correct the problem locations Notes Operates continuously for a se
60. elf Contact the sales dealer or service dealer for repair Do not touch the air inlet or the A N CAUTION sharp aluminum fins of the outdoor unit You may get hurt Ventilate any enclosed areas when installing or testing the refrigeration system Escaped refrigerant gas on contact with fire or heat can produce dangerously toxic gas Confirm after installation that no refrigerant gas is leaking If the gas comes in contact with a burning stove gas water heater electric room heater or other heat source it can cause the generation of poisonous gas Check of Density Limit The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas leaking out its density will not exceed a set limit The refrigerant R410A which is used in the air conditioner is safe without the toxicity or combustibility of ammonia and is not restricted by laws imposed to protect the ozone layer However since it contains more than air it poses the risk of suffocation if its density should rise excessively Suffocation from leakage of refrigerant is almost non existent With the recent increase in the number of high density buildings however the installation of multi air conditioner systems is on the increase because of the need for effective use of floor space individual control energy conservation by curtailing heat and carrying power etc Most importantly the multi air conditioner system is
61. emote controller monitor or PC monitor to check the temperature that is recognized by the microcomputer 3 12 Z WAN SYSTEM Trouble Diagnosis 3 2WAY Alarm Codes F16 Alarm Alarmoode F6 Alarm meaning High pressure sensor trouble abnormal rise in high pressure In some cases this may not be the result of a high pressure sensor malfunction Alarm conditions e High pressure SW activated although the detected pressure was lower 3 03 MPa or below than the high pressure SW activation pressure Undershift e High pressure SW failed to activate although the detected pressure was higher 3 43 MPa or above than the high pressure SW activation pressure Overshift e The saturation temperature at the detected pressure is 5 C or more below the highest indoor unit E1 temperature continuously for 30 minutes e High pressure sensor disconnected or open circuit Probable cause High pressure sensor malfunction Failure to connect the connector to the outdoor unit PCB Failure to open the service valve Clogged tubing Valve leakage Over charging Outdoor unit PCB failure Electrical noise High pressure sensor failure e Check the sensor resistance value Use a tester and measure the resistance between sensor No 1 and No 3 Resistance of less than 10kQ indicates a short circuit or other trouble Resistance of 10kQ 200kQ is normal Resistance of more than 200kQ indicates an open circuit or other trouble e Connect a gauge to the hi
62. en installed PO9 display does not occur 2 2 2 Simple Settings Function Simple Settings Function e This allows the filter lifetime operating mode priori ty change central control address and other set tings to be made for an individual or group control indoor unit to which the remote controller used for simple settings is connected When this function is engaged operation stops at the individual or group control indoor unit to which the remote controller for simple settings is connect ed lt Procedure gt Press and hold the and buttons simultaneously for 4 seconds or longer Gana unit No I or ALL in the case of group control item code ff 7 and settings data 7777 XX are displayed blinking on the remote controller LCD display Fig 2 1 At this time the indoor unit fan or all indoor unit fans in the case of group control begins operating 3 If group control is in effect press the button and select the address unit No of the indoor unit to set At this time the fan at the indoor unit begins operating If unit No HL 2 is displayed the same setting will be made for all indoor units 4 Press the temperature setting CA Cyv_ buttons to select the item code to change 5 Press the timer time 4 v buttons to select the desired setting data For item codes and setting data refer to the following page 6 Press the button Th
63. et mode 3 0004 Quiet mode 4 EN Demand 1 current 0000 0 0001 40 0004 70 0007 100 0008 120 u 7 Snowfall sensor usage Ne 0009 140 0010 160 0011 200 0012 1 no limit 0000 0 0001 40 0004 70 0007 100 0008 120 2WAY SYSTEM Service Checker 1 Outdoor Unit Maintenance Remote Controller E Setting mode 2 Press and hold the CHECK button SET button and the CANCEL button simultaneously for 4 seconds or longer Press the temperature setting CA J and CY I buttons to change the item code The item codes and setting data are shown in the table below EDM ESTO oq PAIS vu Ai 3 Press the timer time ES and Lv buttons to es SS mem change the setting data ALLY a gt iem v 7 NE To confirm the changed setting data press the SET button At this time the SET DATA display stops blinking and remains lit 4 During this mode SET DATA is displayed blinking The display shows the set outdoor unit address System XX YY System XX System address YY Address at outdoor unit sub bus item code number DN value in the table below and the setting data 8 digits The setting data is displayed in 8 digits The display changes between the first 4 digits Fig C and the last 4 digits Fig D When the first 4 digits are displayed
64. for Setting the Flap up down PLT box Flap 4 Motor No 3 XX 93 4 3 Separately airflow direction Only for 4 way Cassette type Flap 3 XX 92 Motor No 1 When the flap position is set to or 5 and the unit is in the cooling or dry mode the flap position is moved to 3 and the operation is started The flap swings during the Setting data Flap position during operation Setting the Flap Without separate setting Separately Only for 4 way Cassette type Swing DS wy 3 DS w KJ Fa E D e G wy Cat Move to position 1 and stay W al Move to position 2 and stay uy Setting the Flap Separately Only for 4 way Cassette type mi al ae a Move to position 3 and stay a operation under Setting the Flap Separately Move to position 4 and stay At this time the unselected flaps Move to position 5 and stay are moved to the position 2 10 2WAY SYSTEM Remote Controller Functions 3 Detailed Settings Function Selecting the DC fan motor tap when setting with the remote controller AHHH lt Procedure gt Stop the system before performing these steps UNT Q Press and hold the A and buttons simultaneously for 4 seconds or longer If group control is in effect press the button and select the address unit No of the indoor
65. ger 2 Alarm conditions 1 A D step is 10 steps or less short circuit a O sepie 1014 steps or more apena OO 2 PCB malfunction Measure the sensor resistance Check that the sensor is operating normally Use a remote controller monitor or PC monitor to check the temperature that is recognized by the microcomputer Caretas Example Notes 1 2 F07 F24 Alarm trouble at outdoor heat exchanger 2 2 A D step is 1014 steps or more open circuit 2 PCB malfunction Measure the sensor resistance Check that the sensor is operating normally Use a remote controller monitor or PC monitor to check the temperature that is recognized by the microcomputer Correction ECT Notes gt 1 2 2WAY SYSTEM Trouble Diagnosis 3 2WAY Alarm Codes F08 Alarm Alarm code Outdoor air temperature sensor trouble Alarm conditions A D step is 10 steps or less short circuit A D step is 1014 steps or more open circuit Sensor malfunction including connector PCB malfunction Check Measure the sensor resistance Check that the sensor is operating normally Use a remote controller monitor or PC monitor to check the temperature that is recognized by the microcomputer F12 Alarm Alarm code A ompressor intake temperature sensor trouble 2 A D step is 1014 steps or more open circuit 2 PCB malfunction 1 2 Check Measure the sensor resistance Check that the sensor is operating normally Use a r
66. gh pressure outlet and check for changes in the value dispalyed by the monitoring software and for large deviation of the gauge pressure e During heating check whether the temperature is lower than the highest indoor unit E1 temperature The pressure detected by the high pressure sensor is the highest pressure in the system Therefore during heating the converted saturation temperature will never be lower than any indoor unit E1 temperature During cooling this temperature will never be lower than the outdoor unit liquid temperature 2 Failure to open the service valve clogged tubing valve leakage over charging In all of these cases an alarm occurs when there are rapid pressure fluctuations and tracking of the detected pressure is poor e Check the open closed status of the valve e Check for clogging of the tubing To check for clogging disconnect the high pressure sensor from the PCB and check whether the high pressure SW activates e Check for valve leakage and over charging When valve leakage or over charging occurs refrigerant is likely to accumulate in the oudoor units or indoor units resulting in a sudden rise in pressure at start that occurs before the refrigerant in the heat exchanger is discharged The representative valves to check are the liquid valves and mechanical valves 3 Outdoor unit PCB failure e The check items are the same as for a high pressure sensor malfunction A normal PCB is needed to determine whether the
67. he HIC PCB L04 Alarm Outdoor system address duplication Alarm conditions Communication by inter unit control wiring was received that contained the same address as that unit 5 times or more within 3 minutes Probable cause Incorrect outdoor system address settings Check the system address settings again Correct the system address settings ESTA O Notes Recovery from this alarm occurs automatically when communication that contains the same address as that unit is not received for 3 minutes after detection 3 19 2WAY SYSTEM Trouble Diagnosis 3 2WAY Alarm Codes L10 Alarm Outdoor unit capacity not set Alarm conditions The outdoor unit capacity has not been set or the setting is not allowed by the system Probable cause This alarm occurs because the capacity has not been set Check Connect the outdoor unit maintenance remote controller On the outdoor unit EEPROM detailed setting mode screen check the value for the outdoor unit capacity item code 81 Check that it is not set to 0 or to a capacity that is not allowed Correction If item code 81 is incorrect use the outdoor unit maintenance remote controller and set it correctly After changing the setting be sure to reset both the indoor and outdoor power ESTA S gt O Notes The outdoor unit maintenance remote controller is required in order to set the capacity in the outdoor unit EEPROM L17 Alarm Alarm code L17 Outdoor unit model mismatch Al
68. he remote controller and complete automatic address setting Refer to Automatic Address Setting from Remote Controller 1 7 2WAY SYSTEM Address Settings 3 Auto Address Setting Automatic Address Setting in Heating Mode e Indoor and outdoor unit power cannot be turned ON for each system separately In the following automatic setting of indoor unit addresses is not possible if the compressors are not operating Therefore perform this process only after completing all refrigerant tubing work Automatic Address Setting from Outdoor Unit 1 Perform steps 1 4 in the same way as for 5 Turn the indoor and outdoor unit power ON at all systems 4 6 To perform automatic address setting in Heating mode on the outdoor main unit control PCB in the refrigerant system where you wish to set the addresses short circuit the automatic address pin CN054 for 1 second or longer then release it Be sure to perform this process for one system at a time Automatic address settings cannot be performed for more than one system at the same time Communication for automatic address setting begins the compressors turn ON and automatic address setting in Heating mode begins All indoor units operate To cancel again short circuit the automatic address pin CNO54 for 1 second or longer then release it The LED that indicates automatic address setting is in progress turns OFF and the process is stopped Be sure to
69. here is a PCB failure 3 Installation error e CT2 connector is connected to the compressor 3 side e CT2 circuit is connected to the compressor 3 side e CT3 connector is connected to the compressor 2 side e CT3 circuit is connected to the compressor 2 side 4 Electrical noise 1 Replace the CT circuit 2 Replace the magnet SW 3 Replace the PCB If the above probable causes are not the cause of the alarm it is possible that in rare cases Correction the alarm may be caused by the effects of noise See notes Notes The effects of electrical noise are difficult to identify unless a PC is connected and the conditions are monitored for a long period of time 3 27 MEMO 3 28 2WAY SYSTEM PCB Settings Contents 4 PCB Settings 1 Outdoor Unit Control PCB EE 4 2 4 1 1 Outdoor Unit Control PCB 1 1 Outdoor Unit Control PCB CR C1806DXH8 2WAY SYSTEM PCB Settings S003 S002 RUN pin AP pin CHK pin CNO52 CNO50 CN049 S005 A ADD pin STOP pin OAC pin Control circuit TEST pin CNO54 CNO53 CNO51 fuse F501 CNO48 Power LED la D515 7 HIC2 18 E H d HIC5 2 E HIC4 2 E w E HIC3 E eg Snow senser i ARONIA XV i CN057 HIC1 oU NSG ONE S004 HIC6 DIS Na A S 3 5 EEE E AN Ge Sec MODE pin zz d de CN085 EG Ske Lee 1 S a 19 E RF 0083 R ak Duer E em CTN CTL1 ee Beck E dt Ee 2006 C Al asi Care o g O g EI D S010 gt e lf 8 77008 Z F Alarm
70. hold for the detected current is 7A or more continuing for 5 seconds e If the low pressure switch has activated the threshold for the detected current is 7A or more continuing for 2 seconds Probable cause 1 Magnet SW malfunction e The magnet SW has seized and the compressor is continuing to run gt Even when the power is turned OFF the primary side and secondary side contacts remain together e The conditions of magnet SW operation are poor difficult to open gt When a magnet SW is used in a DC circuit it may be difficult for the SW to open at times In an AC circuit the magnet SW should open instantaneously as long as the current is within the allowable range However this kind of trouble can occur if excessive current flows and may prevent the SW from opening 2 CT circuit failure or PCB failure A D failure e CT circuit contact failure gt Check that the connector is not partially disconnected Wiggle the connector to check the connection These symptoms will not occur if the connector is completely disconnected or the wire is cut In these cases alarm Hx3 occurs e Current of 7A or higher was detected although the compressor was stopped or a higher current was detected at occasional intervals e The compressor continues to operate at a time when the outdoor unit should be stopped such as when all indoor units are stopped gt Check whether or not 200 V is output from the PCB to the magnet SW If the voltage is output t
71. in effect press the Display shows a discharge temperature of 0OXX at button to select the unit to monitor unit No 1 1 Press the temperature setting buttons In case for example the display shows 0085 in to select the item code to change the figure above a discharge temperature from the outdoor unit stands for 85 C Fig 2 8 Press the 4 button to return to normal remote controller display Outdoor unit sensors NOTE Unit No 1 Unit No 2 Unit No 3 S OA 2A 4A Discharge temp 1 4B The temperature display appears as Disch temp 2 for units that are not connected SCHANS TEMP 4C High pressure sensor temp If monitor mode is engaged while normal 4D Heat exchanger gas 1 operation is in progress only the parts of 4E Heat exchanger liquid 1 the LCD display shown in the figure will AF Heat exchanger gas 2 change Other parts continue to display the same information as during normal operation Heat exchanger liquid 2 Outdoor air temp For inspection CT2 For inspection For inspection Discharge temp 3 CT3 For inspection Indoor unit sensors For inspection Intake temp Heat exchanger gas 3 B E1 DC Heat exchanger liquid 3 E2 5D Low pressure sensor temp 5E E3 Suction temp 5F Oil 1 60 Oil 2 61 Oil 3 Discharge temp Discharge temp setting Position of indoor unit i electronic control valv
72. inary remote controllers or other controllers are still required for the indoor units even when the outdoor unit maintenance remote controller is connected 1 2 Functions B Functions on the ordinary display 1 Press the buttons to execute the following functions e All indoor units stop start e Cooling heating change e All indoor units test run 2 Display The following displays are possible e Alarm display e No of indoor outdoor units e Unit Nos of connected indoor outdoor units e Operating status of indoor outdoor units Blinks when alarm occurs e Indoor thermostat ON e Display of individual outdoor unit alarms e Total operating time of outdoor unit compressors e Oil level of the outdoor unit oil sensor e Total outdoor unit power ON time e Outdoor unit microcomputer version other information 6 2 2WAY SYSTEM Service Checker 1 Outdoor Unit Maintenance Remote Controller B Temperature monitor Displays the temperature from each indoor outdoor sensor m Outdoor unit alarm history monitor Displays the outdoor unit alarm history m Setting the outdoor unit EEPROM data Settings mode 1 and settings mode 2 can be used to make outdoor unit EEPROM data settings 1 3 Ordinary Display Controls and Functions B Functions on the ordinary display Connect the special service checker wiring to the outdoor unit PCB The connection diagram is shown below i Bn e If the inter unit control wiring is connected it can be lef
73. installation error Trouble When the compressor is stopped the current value at the other compressor is high W When this type of condition occurs seizing detection control takes priority 3 If the cause is still unknown after checking the above then it is possible that noise is the cause of the trouble It is necessary to connect a PC or other instrument Correction 1 Replace the CT circuit 2 Replace the outdoor unit PCB 3 Correct the problem Use a normal CT as a tool to determine whether the trouble is a PCB failure or CT failure H05 H15 H25 Alarm Alarmeode HOS HAS Has temperature sensor disconnected Compressor 3 discharge temperature sensor disconnected Alarm conditions e This alarm occurs when the discharge sensor temperature detector is not inserted into the tube s sensor holder or when the sensor itself has suffered some kind of malfunction other than a cut wire e When outdoor air temperature is 10 C or higher Alarm occurs if the temperature detected by the discharge sensor has changed by less than 2 C when the compressor has operated for 10 minutes immediately after start e When outdoor air temperature is below 10 C Alarm occurs if the temperature detected by the discharge sensor has changed by less than 2 C when the compressor has operated for 30 minutes immediately after start Probable cause 1 Discharge sensor temperature detector is not inserted into the tube s sensor holder 2 Discharge senso
74. is used Operation change control in 0000 Normal displayed progress display 0001 Not displayed OFF reminder function for 0000 None when weekly timer is used 0001 Only stop time setting is enabled 0000 Discharge temperature control OFF Discharge temperature control i 0001 Discharge temperature control ON 0013 Control temperature 13 C 0014 Control temperature 14 C Heat exchanger temperature for cold air discharge Heat exchanger control point for control to prevent cold air 0025 Control temperature 25 C 0026 Control temperature 26 C Output linked with fan ON when indoor unit fan is 0000 operating Fan output switching Drain pump delayed start time 0001 Fan mode operation output 0000 No delayed start 0001 0002 1 sec delayed start 2 sec delayed start 0058 58 sec delayed start 0059 59 sec delayed start 0060 60 sec delayed start 0000 Humidifier output OFF Drain pump stopped 0001 Humidifier output ON Drain pump operates Humidifier setting 0002 Humidifier output ON Drain pump operates for 1 minute when total humidifier operating time reaches 60 minutes 0003 0000 Humidifier output ON Drain pump stopped Standard setting Flap operation mode Draft reduction mode Flap swing lower limit position is shifted opa upwards Smudging reduction mode Flap swing upper limit position EES is shifted downwards 0001 Draft reduction mode Flap l
75. ive You are requested to use RoHS compliant parts for maintenance or repair N WARNING 3 when the ceiling is 2 7 m high Min indoor floor area The standards for minimum room volume are as follows No partition shaded portion When there is an effective opening with the adjacent room for ventilation of leaking refrigerant gas opening without a door or an opening 0 15 or larger than the respective floor spaces at the top or bottom of the door If an indoor unit is installed in each partitioned room and the refrigerant tubing is interconnected the smallest room of course becomes the object But when mechanical ventilation is installed interlocked with a gas leakage detector in the smallest room where the density limit is exceeded the volume of the next smallest room becomes the object Refrigerant tubing Outdoor unit Indoor unit Medium room Small room Large room Mechanical ventilation device Gas leak detector The minimum indoor floor space compared with the amount of refrigerant is roughly as follows When the ceiling is 2 7 m high Range below the density limit of 0 3 kg m Countermeasures not needed Range above the density limit of 0 3 kg m Countermeasures needed Total amount of refrigerant Contents
76. lete automatic address setting e Refer to Automatic Address Setting from the Remote Controller 1 5 2WAY SYSTEM Address Settings 3 Auto Address Setting Basic wiring diagram Example 2 e If link wiring is used When multiple outdoor main units exist remove the socket that is used to short circuit the terminal plug CN072 from all outdoor main unit No 1 Refrigerant circuit PCBs except for one unit No 1 main outdoor unit settings Alternatively move the sockets to the OPEN side System address No of indoor units system 1 setting 13 units setting S002 SE No 2 sub unit No 3 sub unit settings settings No of Uni S006 units setting em UN sai 15007 ON en 2007 ON units setting 0 i E site DM ob seting ON setting EMS eting DEN A unit No 2 11 2 3 2 TZ i a E Leave the socket that is Outdoor unit Unit EE Unit Unit system 1 No 1 annen No 2 No 3 Main plug Sub Sub CNO72 Inter outdoor unit control wiring Inter outdoor unit control wiring Inter unit control wiring A Y Indoorunit Remote E Remote controller controller communication wiring No 2 No 1 main unit settings Refrigerant System address No of indoor units circuit system 2 setting 9 units setting De Ta No 2 sub unit settings No of pe en S006 entes S007 Unit number 13007 ON ON
77. n PCB FAN C0906DXH8 Fan PCB FAN C1806DXH8 DT RISO gen 55 95 HR ES PCiE gt Correction If the fan does not start the below corrections may be effective 1 If there is a fan HIC failure or circuit failure replace the PCB 2 If the fan motor is locked replace the fan motor Example Turn OFF the power and check the continuity of and on the fan circuit PCB 3 24 Z WAN SYSTEM Trouble Diagnosis 3 2WAY Alarm Codes P29 Alarm gemeng Je Alarm meaning Inverter compressor missing phase or lock alarm Alarm conditions This alarm may occur at start and occurs when missing phase or lock is detected and when a DCCT failure occurs Probable cause Generally this alarm occurs when the refrigerant pressure balance is uneven at start or when inverter compressor lock occurs there is a missing phase in the inverter compressor wiring or a DCCT failure occurs This can be judged to be starting trouble which is not caused by HIC Check Check the power wiring and connector wiring DCCT failure replace PCB or compressor failure Notes Use a tester to measure the voltage between the DCCT output terminal on the rear of the PCB and the ground If the voltage is not within 2 3 V then the DCCT has malfunctioned 3 25 2WAY SYSTEM Trouble Diagnosis 4 Blinking Inspection Display on The Remote Controller CAUTION Currently the blinking inspection display can be displayed only on the wired
78. nd 3 liquid refrigerant has definitely accumulated somewhere in the system Liquid refrigerant generally accumulates in high pressure locations In this case the high pressure gradually increases however it may not increase if the location where the liquid accumulates is sufficiently large Depending on the refrigerant saturation temperature it may also accumulate in low pressure locations In this case the high pressure is unlikely to increase 1 Check that the service valve is open 2 Check that none of the valves solenoid valves mechanical valves in the main refrigerant circuit is closed due to an operation failure 3 Check that there is no possibility of foreign objects or water having entered the refrigerant circuit 4 Check that valve leakage at a stopped sub unit has not resulted in accumulation of refrigerant at that sub unit 5 Check that no refrigerant leakage has occurred 1 If there was a valve operation failure in general it is necessary to replace the valve 2 If a foreign object or moisture has entered the circuit install a strainer or dry core depending on the degree of the problem Correction 3 If refrigerant has leaked into stopped sub units it is likely that valve leakage has occurred The valve must be replaced Example Notes 3 17 2WAY SYSTEM Trouble Diagnosis 3 2WAY Alarm Codes H08 H27 H28 Alarm Alarm meaning Trouble open circuit with the oil sensor connection
79. ndoor units set at the indoor unit quantity setting SW S004 S005 on the outdoor unit PCB is less than the number set 2 The inter unit control wiring is wired incorrectly 1 Refer to the test run servicing materials and check the number of indoor units that is set 2 Check the inter unit control wiring at the indoor and outdoor units Correction After correcting the indoor unit quantity setting or the inter unit control wiring perform automatic address setting again E20 Alarm No indoor units at automatic address setting Alarm conditions When automatic address setting was performed no indoor units were recognized Probable cause The inter unit control wiring from the outdoor unit to the indoor units has been cut Serial connector 1 CN001 is disconnected at the outdoor unit The power is OFF at all indoor units in the system val A UU hi kt wf uw733 g d 20798 R291 ov AM Ya vet R275 3 e PR S op R276 d 9 ste C153 Cy ras Sne il e R287R289 m LS A ki le 144 CIS a AC md we i c Abel cr IAM tor g s 5 L L E ZHIEI HES E24 Alarm Alarm code Outdoor unit INV failed to receive communications from other outdoor unit constant speed Alarm conditions After initial communications were completed communications from an outdoor unit stopped Probable cause 1 After initial communications were completed the control wiring between main and sub outdo
80. ngs for the Nos of the indoor units are not consistent an alarm will occur and the system will not start 5 These settings are not made on the indoor unit PCB Note It is not necessary to remove the socket that is used to short circuit the terminal plugs from the outdoor sub unit PCBs YES Turn ON the indoor and outdoor unit power for that refrigerant system only Make necessary corrections Turn OFF the indoor and outdoor unit power Short circuit the automatic address pin CN054 on the outdoor main unit PCB for 1 second or longer then release it LED 1 and 2 blink alternately about 2 or 3 minutes Check the alarm corrections Turn OFF the indoor NO second or longer then release it and outdoor unit Check the alarm contents Are LEDs 1 and 2 on the outdoor unit PCB OFF Refer to Table of Self Diagnostic Functions and Description of Alarm Displays YES 2 A minimum of 5 hours must have passed after the power was turned ON to the outdoor unit 3 All indoor units operate in all refrigerant systems where the power is ON 2 WAY SYSTEM Address Settings 2 Settings of Indoor Unit Control PCB O Examples of the No of indoor units settings S005 S004 Indoor unit setting S005 Indoor unit settin g S004 No of indoor units 3P HER blue Rotary switch red 1 unit factory setting All OFF NNN EFT HT 11 units 1 ON HT 2 3 21 units 2 SH O Z EI gt Set
81. nitoring Operations Display the indoor unit and outdoor unit sensor temperatures lt Operating procedure gt D Press and hold the CHECK and CANCEL buttons simultaneously for 4 seconds or longer to engage temperature monitor mode During temperature monitoring CHECK lluminates The display and operations are the same as for monitor mode using the indoor unit remote controller 2 Press the UNIT button and select the indoor unit to monitor Press the temperature setting _ Jand v buttons and select the item code of the temperature to monitor The unit No of the selected indoor unit and the temperature data are displayed amp To end monitoring press the A CHECK button The display returns to the normal display VS The display does not blink W Display of unit No 1 main unit DN Description Remarks Id Intake temp fig El Du E2 rm E3 uo E ju E Discharge temp KZ mal DD 1 L I ke al adi temp SS Wm E Ez Co 5 o O O gt Do D O O gt O Q O o lt S lt TD O 0 eg O An m U U el Discharge temp 1 at Compressor 1 kel E ke al Discharge temp 2 at Compressor 2 gt me Fal Er High pressure sensor temp kel E ED se ei GG Heat exchanger gas 1 al Heat exchanger liquid 1 U gt CA m Fe Heat exchange
82. ntents 2 Remote Controller Functions 1 Remote Controller Test Run Settings s ssssssssssssssssrsarssnnrsnnrnnn nn AREA ARR menens ennnenenensnennsenenn 2 2 2 Simple Settings FURGHONM eege 2 3 3 Detailed Settings Function E 2 5 4 Remote Controller Servicing Functions 2 1 2WAY SYSTEM Remote Controller Functions 1 Remote Controller Test Run Settings Wired Remote Controller Test Run Settings 1 Press the remote controller button for 4 seconds or longer TEST appears on the LCD display while the test run is in progress Then press the button The temperature cannot be adjusted when in Test Run mode This mode places a heavy load on the machines Therefore use it only when performing the test run oO N e The test run can be performed using the HEAT COOL or FAN operation modes NOTE The outdoor units will not operate for approximately 3 minutes after the power is turned ON and after operation is stopped e If correct operation is not possible a error code is displayed on the remote controller LCD display Refer to Table of Self Diagnostic Functions and correct the problem 4 After the test run is completed press the button again Check that TEST disappears from the LCD display e To prevent continuous test runs this remote controller includes a timer function that cancels the test run after 60 minutes e The operation is possible even if the cassette type ceiling panel has not be
83. o check the alarm display The number of times that LED 1 and 2 blink on the outdoor unit control PCB can be used to check the alarm display Refer to Checking the LED 1 and 2 Alarm Display on the Outdoor Unit Control PCB E06 Outdoor unit failed to receive serial communication signals from indoor unit 12 E Automatic address setting start is prohibited E15 Automatic address setting alarm too few units E16 Automatic address setting alarm too many units E20 No indoor units at automatic address setting E24 Outdoor unit failed to receive communications from another outdoor unit E25 Outdoor unit address setting failure duplication E26 Mismatch in outdoor unit quantity E29 Outdoor unit failed to receive communication from another outdoor unit E30 Outdoor unit serial communications failure EJ Communication error between the microcomputers F04 Compressor 1 discharge temperature sensor trouble DISCH1 FOS Compressor 2 discharge temperature sensor trouble DISCH2 FO6 Gas temperature sensor trouble at outdoor heat exchanger 1 EXG1 FO Liquid temperature sensor trouble at outdoor heat exchanger 1 EXL1 F08 Outdoor air temperature sensor trouble AIR TEMP F12 Compressor intake temperature sensor trouble F16 High pressure sensor trouble F17 Low pressure sensor trouble F22 Compressor 3 discharge temperature sensor trouble DISCH3 F23 Gas temperature sensor troubl
84. o the number set Except R C address is 0 E04 Heating ready lamp e Group wiring failure of indoor units in the refrigerant system blinking occurring when remote controller is operated immediately ge after automatic address setting Outdoor unit is detecting error e Error in receiving serial communication signal signal from indoor unit e There is an indoor unit which does not send signals when E06 Operating lamp blinking xt ATA ATA mim Olo CO 00 VIV VIV E12 O the power is ON Improper setting i ing i i wb ge Ee Automatic address setting start is prohibited AP pin was short circuited at time when automatic address setting was started error of group control wiring signal from sub indoor units During auto address setting number of connected units ee Heating ready lamp Mismatch in No of outdoor units setting E26 Error of sub outdoor unit in receiving serial communication E29 Outdoor unit serial communications failure 30 e Indoor unit address setting is duplicated Improper setting Error of main indoor unit in receiving serial communication BESSER Main outdoor unit is detecting error signal from sub outdoor unit blinking Communication error between the microcomputers E31 xt d O D O el gt a Q gt o O el 3 a S B 5 o 5 E 2 o Q sd Cc Q 3 Q CH 3 E gt En gt Improper setting Duplication of main indoor unit
85. of Item Codes on the next page Press the timer time 4 and y buttons to change the setting data To confirm the changed setting data press the SET button At this time the SET DATA display stops blinking and remains lit 4 During this mode SET DATA is displayed blinking The outdoor unit address display section displays HLL the item code and number DN value in the table and the setting data 8 digits The setting data is displayed in 8 digits The display changes between the first 4 digits Fig A and the last 4 digits Fig B When the first 4 digits are displayed the top dot of the colon is illuminated 5 To exit setting mode press the CHECK button A and B are displayed alternately Example shows display of 0000 0001 Ces Parameter Description SET DATA 0000 Sensor input not present Control is performed 0001 Sensor input present Control is performed 0002 Sensor input not present Control is not performed 0003 Sensor input present Control is not performed 0000 Disabled 0001 Quiet mode 1 Outdoor unit fan Quiet mode 0002 Quiet mode 2 0003 Qui
86. oing so may damage the devices lt Operation gt The timer button a can be used to change between double speed and normal operation e During double speed operation the SLEEPING MODE el mark is displayed 6 3 2WAY SYSTEM Service Checker 1 Outdoor Unit Maintenance Remote Controller E Display functions e The item codes can be changed with the Aj and I Y buttons 4 Item code 2 Item Remarks HH Outdoor unit alarm Alarm code display No of connected indoor units Unit Nos of connected indoor unit Operating status of indoor unit Thermostat ON status of indoor unit No of connected outdoor units Unit Nos of connected outdoor units Operating status of outdoor unit compressor a Compressor 1 operating time Compressor 2 operating time Compressor 3 operating time Compressor 1 oil level Compressor 2 oil level O Empty 1 Insufficient 2 Sufficient Compressor 3 oil level 0 Empty 1 Insufficient 2 Sufficient ae Outdoor unit power ON time 0 99999999 hrs wn Compressor 1 operation count 0 65535 times Compressor 2 operation count 0 65535 times Compressor 3 operation count 0 65535 times Display only Alarm code and unit No of unit Alarm history 1 most recent Alarm history 2 Alarm history 3 where alarm occurred are displayed alternately 0 CCU 1 4 Outdoor unit Alarm history 4 Alarm history 5 Alarm history 6 Alarm hi
87. ommunications were completed the outdoor unit main sub control wiring was cut After initial communications were completed the RC connector became disconnected The power at the outdoor unit main unit is turned OFF Check Check the outdoor unit main sub control wiring Check the RC connectors Check the power at the outdoor unit main Correction Repair the outdoor unit main sub control wiring Correct the RC connector connection Turn ON the outdoor unit main power E31 Alarm Communication error between two microcomputers on the Control P C Board Alarm conditions Probable cause When does it occur 1 When failed in rewriting microcomputer When the unit power shut down during rewriting microcomputer 2 3 When wiring between PCB and ROM writer disconnected 1 2 Check 1 Rewrite microcomputer again 2 Switch on the unit power again Replace Control PCB Exampe Notes 3 9 2WAY SYSTEM Trouble Diagnosis 3 2WAY Alarm Codes F04 F05 F22 Alarm Alarmcode FO4 FoB F22 sensor trouble Compressor 3 discharge temperature sensor trouble Alarm conditions 1 Discharge temp of 100 C or higher was detected 20 minutes or more after that compressor stopped operating 2 Discharge temp of 70 C or higher was detected after all compressors had been stopped for 60 minutes or longer 3 A D step is 10 steps or less short circuit Probable cause 1 Sensor malfunction e Sensor element m
88. or replace the problem locations Example AA Notes P02 Alarm Compressor thermal protector is activated trip only and no alarm Alarm conditions When the current is not detected over 4 seconds long after the compressor ON Probable cause Activating condition of the compressor thermal protector The voltage is more than 260V or less than 160V between L and N phase 2 Check the current transformer e Replace defective parts with new ones Example Notes ROO 3 20 2 WAY SYSTEM Trouble Diagnosis 3 2WAY Alarm Codes P03 P17 P18 Alarm Alarm meaning Compressor 1 discharge temperature trouble Compressor 2 discharge temperature trouble Compressor 3 discharge temperature trouble Alarm conditions Temperature is 106 C or higher and pre trip stop has occurred The alarm occurs when pre trip stop occurs more than once However the pre trip counter is cleared if the compressor operates continuously for a specified length of time Probable cause 1 Clogging of liquid valve capillaries 2 Insufficient amount of refrigerant including trouble resulting from an insufficient initial charge and from gas leakage Blocking of low pressure parts caused by intrusion of foreign objects moisture scale etc Crossing tubing or PCB connectors with the other compressor thermistor Expansion valve operation failure Accumulation of refrigerant at stopped outdoor units Compressor discharge sensor failure PCB failure
89. or unit fans in the case of group control begins operat ing If group control is in effect press the button and select the address unit No of the indoor unit to set At this time the fan at the indoor unit begins operating 4 Press the temperature setting CA CY buttons to select the item code to change Press the timer time 4 v buttons to select the desired setting data For item codes and setting data refer to the following page Press the button The display stops blinking and remains lit and setting is completed D Press the button to return to normal remote controller display 2WAY SYSTEM Remote Controller Functions 3 Detailed Settings Function e Setting the Flap Separately When setting the CZ RTC2 5 Press the timer time Pa Cv buttons to select 1 The 4 air outlet flap can be adjusted separately during the desired setting data operation When not adjusted separately all flaps operate in the same manner Flap position y 2 Air discharge port S be 3 A 4 EN 4 Fig 2 3 WS Flap Setting data Y Y Y Y refer to Fig 2 3 adjustment for up down airflow direction Setting data Flap position during operation rodas LIEN D I Without separate setting Stop the system before performing these steps oa Swing D Press and hold the 4 and buttons LILI Li Move to position 1 and stay
90. or unit is stopped and the conditions are monitored The alarm occurs when the above operation occurs for the fifth time The first 4 times before the alarm occurs are called pre trip After pre trip occurs if the low pressure sensor detects a pressure of 0 15 MPa or more for 3 minutes of continuous operation the pre trip count is reset to O If the low pressure sensor detects a pressure of 0 16 MPa or less continuously for 30 minutes when the compressor is stopped an alarm occurs immediately no pre trip Probable cause The A C unit low pressure has dropped to a level that does not occur under ordinary conditions 1 The absolute amount of gas in the system is too low as a result of insufficient refrigerant charge or leak 2 The refrigerant has accumulated in the circuit and has not returned to the compressor Refrigerant has accumulated in a location of one way flow and cannot escape High pressure level is low resulting in poor flow of refrigerant in the circuit A lower high pressure level results in a smaller difference between low pressure and high pressure that may be insufficient to cause refrigerant flow 3 The refrigerant circuit has become closed and refrigerant has not returned to the compressor In some cases when moisture enters the refrigerant circuit it can freeze at the low pressure locations and the resulting ice can block the circuit yy If the alarm occurs when there is sufficient refrigerant in the system 1 a
91. or units was cut 2 After initial communications were completed the outdoor unit power was turned OFF 3 8 2 WAY SYSTEM Trouble Diagnosis 3 2WAY Alarm Codes E25 Alarm Alarm meaning Outdoor unit address setting failure duplication Alarm conditions Communication by outdoor unit main sub control wiring was received that contained the same address as that unit 5 times or more within 3 minutes Probable cause The unit number is set incorrectly Check Check the unit number again Correction Correct the incorrect unit number setting Example DEE Notes Recovery from this alarm occurs automatically when communication that contains the same address is not received for 3 minutes E26 Alarm After power initialization the set outdoor unit quantity did not match the number of outdoor units detected on the outdoor unit main sub control wiring for 3 minutes or longer 2 The outdoor unit main sub control wiring is cut 2 Check the outdoor unit main sub control wiring 2 Repair the outdoor unit main sub control wiring ESTA fe Recovery from this alarm occurs automatically when the set outdoor unit quantity matches the number of outdoor units detected on the outdoor unit main sub control wiring E29 Alarm Outdoor unit failed to receive communication from outdoor unit main Alarm conditions Outdoor unit communications from outdoor unit main were interrupted for 3 minutes or longer Probable cause 1 After initial c
92. ower limit position is 0002 i shifted upwards Flap swing mode Normal mode 2 9 3 Detailed Settings Function Fan tap setting Fan tap change in order to prevent drop in air discharge caused by filter installation 0000 Standard Setting data Description DC fan tap gt operating mode urpose Standard setting at time of shipping Ultra long life filter oil guard panel ammonia deodorizing filter optical regenerative deodorizing filter 2WAY SYSTEM Remote Controller Functions regenerative deodorizing filter deodorant activated High ceiling use High ceiling setting 1 with standard panel 0001 For low static pressure filter charcoal filter High ceiling use High ceiling setting 2 with standard panel Antibacterial high performance filter 90 For low Antibacterial high performance filter 65 0003 Static pressure Air cleaning unit air cleaning unit optical filter For air blocking material For 3 way discharge when discharge duct is connected For air blocking i 0006 materal For 2 way discharge Humidifier ON time ON time per 60 seconds 0059 0060 Continuously ON Repeat timer Function disabled Function enabled Timer function Function disabled Function enabled Setting the Flap Flap 1 XX 90 Separately Motor No 4 Air discharge Flap position port Electrical component Only for 4 way Cassette type Flap adjustment
93. perating the compressors to perform automatic address setting operation in Heating mode can be normally used However short circuiting this pin performs operation in Cooling mode Static signal e Short circuiting this pin on COOL side during ordinary operation changes the mode to Cooling e Short circuiting this pin on HOT side during ordinary operation changes the mode to Heating Test 2P plug white CN048 e This pin is used to test the PCB at the factory e When the power is turned ON after this pin has been short circuited all output signals will be output in sequence Sequential output does not occur if this pin is short circuited when the power is already ON Releasing this pin returns the unit to normal control CHK Test Run 2P plug white Test run pin CNO49 e Test run mode is operated while short circuit Snowfall sensor CN057 3P plug red With the Relay ON the outdoor fan circulates NOTE regardless of the compressor s running and stop 1 Ensure that the wiring length between the outdoor unit Power source control PCB and Relay is less than 2m Lead wire with 3P socket service parts available part code CV9231851818 Select the Relay that is the mimimum load 0 1mA for the contact specifications Install the air discharge chamber in the area of outdoor air temperature lower than approx 0 C and also when operating in the cooling mode all through the year e Sample Wiring
94. perform automatic address setting again Automatic address setting is completed when the compressors stop and LEDs 1 and 2 on the main unit control PCB turn OFF I 7 At the outdoor main unit in the next different system short circuit the automatic address pin CN054 for 1 second or longer then release it l Repeat the same steps to complete automatic address setting for all units 8 Operation from the remote controllers is now possible To perform automatic address setting from the remote controller perform steps 1 5 then use the remote controller and complete automatic address setting Refer to Automatic Address Setting from Remote Controller 1 8 2 WAY SYSTEM Address Settings 3 Auto Address Setting Automatic Address Setting in Cooling Mode e Indoor and outdoor unit power cannot be turned ON for each system separately In the following automatic setting of indoor unit addresses is not possible if the compressors are not operating Therefore perform this process only after completing all refrigerant tubing work Automatic address setting can be performed during Cooling operation Automatic Address Setting from Outdoor Unit 1 Perform steps 1 4 in the same way as for 5 Turn the indoor and outdoor unit power ON at all systems 4 6 To perform automatic address setting in on the outdoor main unit control PCB in the refrigerant system where you wish to set the addresses short circuit
95. problem is a PCB failure or a pressure sensor malfunction If an abnormality was found at the check items for a high pressure sensor malfunction first try replacing the PCB and check again Trouble is corrected Outdoor unit PCB failure Trouble is not corrected High pressure sensor malfunction Nm SN Nw ee Nw New Ny Check Continued 3 13 2WAY SYSTEM Trouble Diagnosis 3 2WAY Alarm Codes Correction 1 Replace the high pressure sensor Caution Because the high pressure sensor connection employs a Schrader type valve it can be removed and replaced However the high pressure sensor can be easily damaged by high voltage therefore use sufficient caution with regard to static electricity 2 Replace the PCB 3 Correct the locations of problems in the refrigeration cycle e Correct locations where clogging or leakage has occurred e In the case of over charging recover refrigerant Adjust the amount of refrigerant Guide for over charging Be sure to connect the gauge to the high pressure pressure outlet when checking for over charging During cooling The following does not apply when outdoor air temperature is low or when fan speed is controlled When both compressor 1 and compressor 2 are operating and the fan mode is 14 maximum fan speed then the high pressure saturation temperature should be approximately 15 C above the outdoor air temperature If it is 5 C or more above this level
96. r gas 2 ju E a Heat exchanger liquid 2 je w E Outdoor air temp Not used ese ON Inverter primary current md len Current at Compressor 2 CT2 MOV1 pulse MOV2 pulse Discharge temp 3 at Compressor 3 SCH Lil a K al CT3 MOV3 pulse MOV4 pulse Heat exchanger gas 3 VW Vi Wu bam Ju ay A nl Heat exchanger liquid 3 L Low pressure sensor temp p d Suction temp ss Pm jen je ma Ma La me em me me me me me me me ema me me eme ma ma E Oil1 nm oil2 SS II Oil3 oC de Actual operating frequency Hz J NOTE OA and subsequent items are outdoor unit data OA 22 are for unit No 1 2A 42 are for unit No 2 4A 62 are for unit No 3 62 89 are for unit No 4 6 7 2WAY SYSTEM Service Checker 1 Outdoor Unit Maintenance Remote Controller 1 5 Outdoor Unit Alarm History Monitor Recalls and displays the outdoor unit alarm history e This is for the outdoor unit only Indoor unit alarms cannot be recalled e The indoor unit alarm history can be viewed on the indoor unit remote controller or other controller lt Operation procedure gt Press and hold the CHECK button and SET button simultaneously for 4 seconds or longer to engage outdoor unit alarm history mode During temperature monitoring illuminates The display and operations are the same
97. r itself has suffered some kind of malfunction other than a cut wire 1 2 Check 1 Check that the discharge temperature sensor is inserted into the sensor holder 2 Check that sufficient heat conducting putty is applied 3 Remove the discharge sensor from the sensor holder and expose the sensor to the outside air for approximately 5 minutes Check that the temperature detected by the sensor changes to match the outside air temperature However the sensor cannot detect temperatures at or below 0 C 1 Install the sensor into the holder and apply sufficient heat conducting putty 2 If the sensor is malfunctioning replace it Example S O Notes The discharge temperature sensor is generally a sensor intended for accurate detection of high temperatures Therefore it will not accurately detect the temperature if the temperature at the measurement point is 20 C or below 3 16 2 WAY SYSTEM Trouble Diagnosis 3 2WAY Alarm Codes H06 Alarm gemeng Je Low pressure switch activated Alarm conditions A report occurs during A C operation when the low pressure sensor installed at constant low pressure parts detects a pressure of 0 05 MPa or less continuously for 2 minutes or an instantaneous pressure of 0 02 MPa or less These values represent abnormal low pressure which may damage the compressor However the alarm does not actually occur the first 2 times that the above operation takes place At these times the outdo
98. rrent is flowing in the phase where the CT circuit is connected gt Check voltage and current 3 Missing power phase Trouble This alarm primarily occurs when the T phase is missing When the R phase or S phase is missing CT trouble or PCB continuity trouble occur However this may not be true in the case of a missing phase caused by magnet SW trouble Check There is the possiblility of a magnet SW failure Therefore check the phase voltage at a location that is as close to the compressor as possible 4 Low power voltage Trouble In most cases this occurs when another constant speed compressor including compressors in other units or other device starts lt also occurs when the power wiring is extremely long Check Check the voltage between each of the phases However if this troube occors when other devices or compressors start then an oscilloscope is required 5 PCB failure Trouble Check Check that the current value measured with the clamp meter is not lower than the value measured with the PC or remote controller 6 If the cause is still unknown after checking the above then it is possible that noise is the cause of the trouble It is necessary to connect a PC or other instrument Correction 1 Replace the compressor 2 Replace the CT circuit 3 Repair the power circuit 4 Adjust the primary side power Repair the power wiring 5 Replace the outdoor unit PCB 6 Correct the trouble In the case of a compressor fail
99. story 7 Alarm history 8 oldest Firmware version Displays the version No x 100 Program version Displays the version No x 100 1 and 2 correspond to Fig 6 3 on the next page 6 IN 2WAY SYSTEM Service Checker 1 Outdoor Unit Maintenance Remote Controller G XX YY R C Displays the outdoor unit sub bus address which is currently selected XX Outdoor unit system address 1 30 YY Outdoor unit address 1 4 The locations where and are displayed as shown on Fig 6 3 OO O ME BT a H gt lt No of connected indoor units gt 4 units connected Fig 6 4 O ME GES e lt Unit Nos 1 2 3 4 connected gt Fig 6 5 2WAY SYSTEM Service Checker 1 Outdoor Unit Maintenance Remote Controller B Concerning the 7 segment 4 digit display of remote controller timer time e The unit Nos of connected units are indicated by four 7 segment digits HH HH and a colon D Display of unit Nos 1 20 OFF OFF OFF OFF Meaning of colon 1 6 11 16 gt pal pal en 4 bl H H H 17 AAY 5 S NA S NA S NI 21 40 141 60 61 80 ON ON ON ON 2 Display of unit Nos 21 40 OFF OFF OFF OFF Meaning of colon 21 26 O 31 36 De A KA Do A 38 l S o EE ED dE ED zj g g Y O O D z EV mvs av ao 21 49 41 60 ei 80 ON ON ON ON 3 The meaning of the colon changes in the same way to indicate unit Nos up to 80 4
100. t as is e In case of an independent outdoor unit 1 maintenance remote controller connected to 1 outdoor unit automatic address setting for indoor units not completed both setting mode 1 and set ting mode 2 can be used for outdoor unit EEPROM data settings e The overall system status for that refrigerant system is displayed Outdoor unit PCB K RC 3P blue PCB connector 3P blue Yu Special service checker wiring YH we EE All units start stop Fig 6 1 lt Operation gt The ON OFF operation button can be used to start and stop all indoor units e The LED illuminates if any indoor unit is operating e The LED blinks if an alarm occurs at any of the operating indoor units O TE SET EB Cooling heating change Fig 6 1 lt Operation gt The MODE button can be used to change between heating and cooling operation e The display indicates the operating mode of the indoor unit with the lowest unit No All units test run Fig 6 2 lt Operation gt The CHECK button can be used to start and stop a test run for all units N mya e To start press and hold the button for 4 seconds During the test run Test is displayed e The status of test runs performed from the indoor unit remote controller is not displayed on the outdoor unit maintenance remote controller Double speed e Do not use for actual operation D
101. t length of time ef Indicates 2 5 minutes or longer for an inverter unit and 30 seconds or longer for a constant speed compressor 3 21 2WAY SYSTEM Trouble Diagnosis 3 2WAY Alarm Codes P04 Alarm Alarm code PP High pressure switch activated Alarm conditions The operation of the electronic circuit in the high pressure switch may short circuit the terminal depending on the pressure A pressure of 3 3 MPa or above will short circuit the terminal Once the terminal is short circuited it will remain in that state until the pressure goes below 2 6 MPa Probable cause Failure of the check valve in the compressor discharge tube The service valve is closed Clogging of the outdoor heat exchanger during cooling An air short in the outdoor unit during cooling Failure of the outdoor fan during cooling Clogging of the air filter in the indoor unit during heating An air short in the indoor unit during heating Failure of the indoor fan during heating Clogging of the refrigerant circuit Failure of the mechanical valve Failure of the solenoid valve kit Too much refrigerant has been charged Failure of the high pressure switch Make sure that the high pressure switch connector has been properly connected If the high pressure switch is properly connected connect a high pressure gauge to the high pressure outlet port and monitor the pressure during operation to check the pressure when the high pressure switch is acti
102. ted correctly Check that there are no open circuits short circuits terminal plugs incorrect wiring to the remote controller terminals or O O O similar problems Check that the remote controller wiring is connected correctly Check that there are no open circuits short circuits incorrect wiring to the inter unit control wiring terminals group control crossover wiring or similar problems O O Check that the number of indoor units has been set correctly using switch S004 and S005 on the outdoor unit control PCB Check that the amount of additional refrigerant charge is correct when performing Auto Address Setting Case 3A or Case 3B in the flow chart described on page 1 2 Check that the refrigerant tubing connections are correct when performing Auto Address Setting Case 3A or Case 3B in the flow chart described on page 1 2 Check that there are no problems with indoor unit sensors E1 and E3 when performing Auto Address Setting Case 3A or Case 3B in the flow chart described on page 1 2 Orr Check that there are no indoor units where the system address was already incorrectly set by manual O or automatic address setting e When automatic address setting is started from the outdoor unit control PCB or from the remote controller Saag SETTING appears on the remote controller at units where the inter unit control wiring and remote con troller wiring are connected correctly LED 1 and 2 on the outdoor unit
103. the MODE COOL pin CN085 At the same time short circuit the automatic address pin CN054 for 1 second or longer then release it Be sure to perform this process for one system at a time Automatic address settings cannot be performed for more than one system at the same time Communication for automatic address setting begins the compressors turn ON and automatic address setting in Cooling mode begins All indoor units operate To cancel again short circuit the automatic address pin CN054 for 1 second or longer then release it The LED that indicates automatic address setting is in progress turns OFF and the process is stopped Be sure to perform automatic address setting again Automatic address setting is completed when the compressors stop and LEDs 1 and 2 on the outdoor main unit control PCB turn OFF 4 7 At the outdoor main unit in the next different system short circuit the automatic address pin CN054 for 1 second or longer then release it Repeat the same steps to complete automatic address setting for all units y 8 Operation from the remote controllers is now possible Automatic address setting in Cooling mode cannot be done from the remote controller Automatic Address Setting from the Remote Controller Selecting each refrigerant system individually for automatic address setting H H 14 DA W Automatic address setting for each system Item code A1 ee rn R
104. trol PC Board e Mode Select switch 3P Black CN085 During normal drive When the cooling side is short circuit all indoor units change to cooling mode Changes to the cooling or heating mode Main outdoor unit is only usable When the heating side is short circuit changes to all heating mode e Auto Address pin Short circuit for 1 second or longer When opened the auto address mode starts 2P White CNO54 When the short circuit remains in effect for more than 1 second during auto address the auto address is interrupted e CHK Pin TestRun When set to short circuit changes to the test run mode 2P White CN049 The test run mode is automatically cancelled after an hour When short circuit is cancelled the test run mode is cancelled e RC socket Connects to the outdoor unit maintenance remote control and the content of an alarm SP Blue CN077 message will be checked e Run pin When the pulse signal applied after short circuit all indoor units within the same series will 2P White CNO52 be operated e Stop pin When the pulse signal applied after short circuit all indoor units within the same series will 2P White CNO53 Hesl pged When set to short circuit the remote control from the indoor unit can not be operated AP pin Vacuum i 2P White CN050 Used for vacuuming the outdoor unit Socket for Snow Area e Snow sensor 3P Red CN057 Used for installing the
105. uble Diagnosis 3 2WAY Alarm Codes H11 H12 H21 H22 Alarm gemenge aea U Alarm meaning Constant speed compressor 2 overcurrent alarm Constant speed compressor 2 lock current alarm Constant speed compressor 3 overcurrent alarm Constant speed compressor 3 lock current alarm Alarm conditions During operation the compressor current value exceeded 12 A for 30 seconds or longer However this alarm is not detected for 4 seconds after the compressor starts During operation the compressor current value exceeded 14 A for 4 seconds or longer However this alarm is not detected for 2 seconds after the compressor starts Probable cause Compressor failure locked or partially locked CT circuit failure including cut wiring Missing power phase Low power voltage PCB failure Compressor failure partially locked Trouble Current value during operation greatly exceeds the value shown above Check When the current for each phase is measured with a clamp meter or similar instrument check that the current value for all phases is not high If MG was forced ON use caution check that compressor noise will not occur or the compressor will not run with a groaning sound 2 CT circuit failure PCB failure Trouble Check Check for poor connector contact e Check the continuity of the CT circuit e Install a normal CT in place of this CT and check If current is detected then the PCB can be jedged OK gt CT circuit failure e Check that cu
106. unit to set At this time the fan at the indoor unit begins operating Use the temperature setting buttons to select item code 5d Press the timer time 4 y buttons to select the _ a RR desired setting data E PROGRAM For item codes and setting data refer to Table 1 Table 3 a oe an Press the SET button The display stops blinking and Er ER remains lit and setting is completed If air blocking material is used use the same procedure as in steps 3 5 above and change the setting for item code 62 to 0000 To change the selected indoor unit go to step 2 pant EI ene Li 5 A R C No _ SET DATA Fig 2 4 Failure to make this setting may result in 6 Press the button to return to normal remote controller display EE EE SE Table 1 Table of DC Fan Motor Tap Settings 4 way cassette type Setting No Remote controller setting data Contents amp optional parts name 0000 Standard setting at time of shipping i 3 0003 Air blocking material for 3 way air discharge 0003 Air blocking material when a discharge duct is connected 6 0006 Air blocking material for 2 way air discharge Table 2 Table of DC Fan Motor Tap Settings Ceiling type Setting No Remote controller setting data Purpose of use names of accessories 0000 Standard setting at time of shipping High ceiling setting Super long life filter Ammonia deodorant filter 65 by JIS
107. ure it is likely that steps must be taken to correct the cause of the compressor failure such as liquid back up in order to prevent recurrence Be sure to check that there is no cause which may resuit in compressor locking Example OO 3 15 2WAY SYSTEM Trouble Diagnosis 3 2WAY Alarm Codes HO3 H13 H23 Alarm Compressor 1 CT sensor disconnected or short circuit Compressor 2 CT sensor disconnected or short circuit Compressor 3 CT sensor disconnected or short circuit Alarm conditions Current value at compressor 1 was 18 A or less and at compressors 2 and 3 was 2 A or less when 2 seconds or more had passed after the compressor began operation and output No current is detected even though the compressor is operating Probable cause 1 CT circuit failure including cut wiring etc Disconnected CT circuit connector Missing phase where CT circuit is connected This CT circuit is connected to the connector of the other CT circuit PCB failure Electrical noise CT circuit failure PCB failure Trouble Current value during compressor operation is below the threshold value Check Check that the connector is not disconnected e Check the continuity of the CT circuit e Install a normal CT in place of this CT and check If current is detected then the PCB can be judged OK gt CT circuit failure e Check that current is flowing in the phase where the CT circuit is connected gt Check voltage and current 2 Crossed wiring or
108. vated Check valve failure is likely if the pressure is less than 3 3 MPa The following describes checks to be made when the pressure is high During cooling check whether the outdoor unit heat exchanger is clogged Remove any foreign material that prevents ventilation During cooling check whether an air short blockage has occurred in the outdoor unit The system is operating normally unless the temperature around the outdoor unit is excessively high During cooling check for outdoor fan failure Check whether the screws securing the fan are loose and whether the fan connector in the outdoor unit PCB is properly connected During heating check whether the air filters in the indoor unit are clogged If clogged clean the filters During heating check whether an air short blockage has occurred in the indoor unit The system operates normally unless the temperature around the indoor unit is excessively high During heating check for indoor fan failure Check whether the refrigerant circuit is clogged Check that all service valves are closed Check whether welded locations are clogged sound when the power is reset Since the mechanical valve in the indoor unit is in a location that makes aural inspection difficult use an electric means to check Check that the connector pin of the mechanical valve on the PCB outputs 4 V In addition check that the coil resistance of the mechanical valve is several tens of Q 11 Check for solenoid valve kit f
109. wer is turned ON and auto E RA matic address setting is not in progress the number of detected indoor units connected to that Both OFF system matches the number that was set and regular communications are occurring Automatic address setting is in progress xt Xt At time of automatic address setting the number of indoor units did not match the number that was set aeeeeeeeeeeseeeeeseeeeeeeeeleeseeeeeseeeeeseeeeeseeeeeeed xt xt Alarm display O ae nara tet NERE LED 1 blinks M times then LED 2 blinks N times The cycle then repeats Blinking alternately M 2 P alarm 3 Halarm 4 E alarm 5 Falarm 6 L alarm N Alarm No Example LED 1 blinks 2 times then LED 2 blinks 17 times The cycle then repeats Alarm is P17 3 4 2 WAY SYSTEM Trouble Diagnosis 3 2WAY Alarm Codes With type 8HP the INV compressor is compressor 1 only With types 10HP 12HP 14HP and 16HP the INV compressor is compressor 1 and the constant speed compressors AC1 are compressors 2 With types 18HP and 20HP the INV compressor is compressor 1 and the constant speed compressors AC1 AC2 are compressors 2 and 3 E06 Outdoor unit failed to receive serial communication signals from indoor unit Automatic address setting start is prohibited 3 Automatic address setting alarm too few units 3 r ts E06 Automatic address setting alarm too many units E20 No indoor units at automatic address setting E24 E25 E26
110. y switch 10 positions black Outdoor system address setting switch e The setting is 1 at the time of shipment It is not necessary to change the setting if wiring is connected only to an outdoor unit and indoor units in a single system and the inter unit control wiring does not cross multiple systems If wiring links the inter unit control wiring for multiple systems to the same communications lines then a different address must be set for each refrigerant tubing system If wiring links multiple systems a maximum of 30 systems up to 64 indoor units can be connected This setting can be set up to 39 however control will be for 30 systems even if the setting is set to higher than 30 An alarm will be displayed if system addresses are duplicated For details refer to Table 1 S003 DIP switch 2P blue Switches for setting system address 10s digit and 20s digit e If 10 systems or more are set the setting is made by a combination of this DIP switch and S002 e If 10 19 systems are set set switch 1 10s digit to ON e If 20 29 systems are set set switch 2 20s digit to ON and set switch 1 10s digit to OFF e If 30 systems are set set both switch 1 10s digit and switch 2 20s digit to ON For details concerning S002 and S003 refer to Table 1 S004 Rotary switch 10 positions red Switch for setting the number of connected indoor units In order to allow the outdoor unit to manage indoor units in the same refriger

TEST RUN SERVICE MANUAL

Contents

Download Pdf Manuals

Related Search

Related Contents