technical data & service manual split system air conditioner
Contents
1. _ 1 1 sup i FROM 1 WHT 22 SP BLK TRANS P 212 TER 3P WHT 3 3 OUTDOOR UNIT GRN YEL ala P 4 RED 515 TERMINAL TRANS 4 TRANSFORMER CONTROLLER TRANS S 1 1 BRN 5 CAPACITOR 2P WHT 22 BRN YEL 1 i PNK 1 i PNK BRN 2 2 BRN 2 2 BRN BLU 3 3 GRY 3 3 GRY FM SW 1 i i VLT 111 VLT i gt FM BLK 4 4 VLT 4 4 WHT HH 3P BLK 1212 GRY 212 GRY 2 2 A GRY S B ORG S SI VLT 3 3 WHT lt 2 RED 6 6 YEL 6 6 ORG M WHT 7 7 BLK 77 YEL OL GRN YEL 18 8 BLK LL LAMP 1 2 E 3PCWHT 2 2 BLU I 1 WHT 1 1 x DEMO SW 313 212 48 0 21 a L GRY 5 o o WHT a1 DEMO sw SOL ORE OP amp 2 2 2P WHT LAMP 2 1 1 GRY S B RED 55 5 12121 41 6 6 BRN sie 90 3 3 RED 7 7 BLK 77 Sx BRN 1 i DP 4 4 BRN ais dl 2 2 3P BLK 55 BLK BRN 313 a HUMIDITY SENSOR gt HUM 1 BLK 1 BLK MW 11 111 FS 2P RED 2 nn BEN HI 5 veu 2 2 BLK 2 2 BLK ROOM TH rA FLAP2 1 1 WHT 111 WHT 1 L WW BLK 1 1 ROOM COIL SP WHT 2 2 BLU 22 BLU 12 2 BLK 22 3 3 GRY 3 3 GRY 3 3 FLP1 4 4 VLT aja VLT 4 4 GWoO BLK 414 515 SISK RED 55 COIL TH i i RED 25 43 3 FLP2 GRY 4 4 10 45152. 575 a 2 SUSPENSION 506 575 BRACKET BRACKET 26 a if i als pss F CEILING ol lo P om m NR co m e Y _ 3 a gt _ gt 600 B 600 He 730 FRESH AIR 214 3 INTAKE SIDE SUSPENSION BRACKET 544 10 F ELECTRICAL COMPONENT 2 BOX SIDE o o mln amp 8 2 gt SUSPENSION BOLT Y REFRIGERANT TUBING SIDE t CEILING NUTS 222 WASHERS FRESH AIR INTAKE PORT 270 PRESPLITTING REFRIGERANT TUBING JOINT X WIDE TUBE O D 9 52mm 3 8 I D 18mm CONDENSATE DRAIN PIPING REFRIGERANT TUBING JOINT NARROW TUBE 0 0 6 35mm 1 4 REFRIGERANT TUBING SIDE 25 25 3 ELECTRICAL DATA 3 1 Electric Wiring Diagrams
3. 4 FUNCTIONS 4 1 Operation Functions Functions of the main unit controller OFF Used to stop the unit when the remote Self diagnostics controller is unavailable Used when service inspection is performed During normal operation Starts operation from the remote controller Emergency operation When the remote controller is unavailable moving this switch from the OFF position to the ON position starts automatic operation Used when operating performance are checked Used when pump down is carried out Operates at the rated frequency At this time the main unit lamp flashes and the remote controller signal cannot be received This function is for shop displays Ordinarily itis not used Used during servicing 2 ON 4 DEMO Automatic operation Operating mode selection When automatic operation is selected the indoor and outdoor temperature sensors function and either HEAT DRY or COOL mode operation is selected automatically Indoor temperature Set temperature Approx 15 C 22 C 27 C standard cooL 27 C mode Approx 220 Temperature at which operation starts Range 20 26 C 20 C 18C Outdoor air temperature 24 C When multiple indoor units are connected and this unit is started while another indoor unit is operating the operating mode is as shown in the table below Operatin
4. This prevents remote controller signal interference when two air conditioners are installed next to each other Ordinarily the address is set to A If it is necessary to change the address follow the procedure below If 3 or more up to 4 units are installed use remote controllers that are intended for servicing use CD Switch the address setting to B by removing the tab marked A on the remote controller 2 Insert dry cell batteries into the remote controller and press the button Then attach the cover 3 Open the air intake grille on the indoor unit and move the operation switch to the DEMO position Press the ON OFF operation button on the remote controller Check that the beep signal received sound is heard from the indoor unit 5 Move the operation switch to the ON position and close the intake grille 6 Operate the remote controller Check that the signal received sound is heard from the indoor unit 4 3 Drain Pump and Float Switch Compressor Either in Heating or another mode or the unit is stopped when the float switch is turned ON the drain pump operates for 20 minutes minimum 5 TROUBLESHOOTING Precautions before performing inspection or repair After checking the self diagnostics monitor turn the power OFF before starting inspection or repair High capacity electrolytic capacitors are used inside the outdoor unit controller
5. XK Xt Xt E13 FREEZE PREVENTION OPERATION 1 INDOOR FAN SYSTEM FAILURE 2 NO REFRIGERANT 3 LOW TEMPERATURE OPERATION Other Timer lamp flashes 3 second intervals I D float switch activated NOTE If the operation lamp continues to flash orange even when the operation switch has been moved to the OFF position an indoor unit external ROM failure has occurred E14 After inspection or repair is completed be sure to move the operation switch on the electrical box to the DEMO position turn the power OFF and ON and erase the diagnostics contents Control 1 Control 2 Short circuit terminals 2 and 3 on the outdoor unit terminal plate Short circuit terminals 2 and 4 on Probable location of malfunction the indoor unit terminal plate Initial self diagnostics No change A Change Operation lamp and Service Change Operation lamp and Service Outdoor unit circuit board failure lamp unie er ang lees ass 20 0 Change Operation lamp and Service Change only operation lamp illuminates Failure open circuit contact failure PR etc in the inter unit cable Turn the power OFF before performing short circuiting work During the self diagnostics check the check results are the first indication when the operation switch is moved to OFF while the indicators are flashing after power DEMO 5 seconds ON Before performing the above checks perform DEMO operation and check tha
6. Rating DC 12V Coil resistance Ambient temp 25 C 400 7 Aluminium plate fin Copper tube 1 1 3 0 258 DATA SUBJECT TO CHANGE WITHOUT NOTICE 1 3 Other Component Specifications CAF184MR5IA Trasformer TR ATR 155 Rating Primary AC 230 V 50 60 Hz Secondary 13 7 V 0 4A Capacity 5 48 VA Coil resistance Q at 25 C Primary WHT WHT 307 10 Secondary BRN BRN 1 8 10 Thermal cut off temp 150 C Thermistor Coil sensor TH1 DTN C583G3U TKS121B 0 188 0 4 Thermistor Room sensor TH2 DTN C502H3T TKS128B 25 C 5 0 3 Drain pump Model PC 309564003 Rating Voltage 220 240 V 50 Hz Input 14W Total head capacity 0 4 l min Safety float switch Model BI 1300 2725 Contact rating 230 V AC DC 0 5 Indoor air temp sensor Indoor heat exchanger sensor 10 200 9 180 160 2 8 140 56 8 120 2 5 FA 100 4 e 80 5 40 20 10 15 20 25 30 35 40 0 0 10 20 30 40 50 60 70 80 90 gt Temperature Temperature 2 DIMENSIONAL DATA
7. on both the two power terminals Fig 1 Then also measure the resistance between the grounding and other power terminals Fig 1 6 1 2 Indoor Unit Clamp a metallic part of the unit with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on each terminal screw where power supply lines are connected on the terminal plate Fig 2 6 1 3 Outdoor Unit Clamp an aluminum plate fin or copper tube with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on each terminal screw on the terminal plate Fig 2 Note that the ground line terminal should be skipped for the check 6 1 4 Measurement of Insulation Resistance for Electrical Parts Disconnect the lead wires of the desired electric part from terminal plate capacitor etc Similarly disconnect the connector Then measure the insulation resistance Figs 3 and 4 NOTE Refer to Electric Wiring Diagram If the probe cannot enter the poles because the hole is too narrow then use a probe with a thinner pin power plug Local supply N i 2 Insulation tester NOTE The shape of the power plug may differ from that of the air conditioner which you are servicing Fig 1 Terminal plate ellele Copper Insulation tube or tester metallic part Fig 2 Copper tube or metallic part Insulation tester Fig 3 F
8. 010008 CIRCUIT BOARD FAILURE Xt Xt X 03 OUTDOOR UNIT EXTERNAL ROM FAILURE 1 EXTERNAL ROM DATA FAILURE 2 OUTDOOR CIRCUIT BOARD FAILURE 1 INSTANTANEOUS POWER OUTAGE 2 HIC OR POWER TR FAILURE X X 3 E04 PEAK CURRENT CUT OFF 3 OUTDOOR CIRCUIT BOARD FAILURE PAM CIRCUIT FAILURE XE X 05 ACTIVE CIRCUIT FAILURE 1 OUTDOOR CIRCUIT BOARD FAILURE 2 OUTDOOR POWER SUPPLY VOLTAGE FAILURE 1 ELECTRIC EXPANSION VALVE FAILURE 2 CAPILLARIES BLOCKED 3 NO GAS X XE X compressor DISCHARGE OVERHEAT PREVENTION 4 CONTINUOUS OVERLOAD OPERATION 5 OUTDOOR FAN DOES NOT TURN 6 OUTDOOR CIRCUIT BOARD FAILURE 1 FAN MOTOR FAILURE 2 CONTACT FAILURE AT CONNECTOR Xt XE XE EO7 INDOOR FAN OPERATING FAILURE 3 INDOOR CIRCUIT BOARD FAILURE Xt xk xk TAMAR VALVE SHITCHING FAILURE 1 4 VALVE FAILURE 2 OUTDOOR CIRCUIT BOARD FAILURE XH XH 9 REFRIGERANT PROTECTION 1 SERVICE VALVE NOT OPENED 2 NO REFRIGERANT Xt XE 3 E10 dc COMPRESSOR DRIVE CIRCUIT FAILURE 1 OPEN PHASE 2 OUTDOOR CIRCUIT BOARD FAILURE 1 FAN MOTOR FAILURE 2 CONTACT FAILURE AT CONNECTOR Xe XK XE EI1 OUTDOOR AC FAN OPERATING FAILURE CIRCUIT BOARD PA EURE OUTDOOR SYSTEM COMMUNICATIONS FAILURE Xt xk Xt E12 20010008 HI PRESSURE SW OLR OPERATION 1 MISWIRING 2 BLOWN FUSE 3 POWER RELAY FAILURE OPEN PHASE OUTDOOR POWER SUPPLY OPEN PHASE OUTDOOR 5 OUTDOOR CIRCUIT BOARD FAILURE 6 COMPRESSOR FAILURE COIL FREEZING
9. TECHNICAL DATA 3c Technibel amp SERVICE MANUAL E INDOOR UNIT CAF184MRSIA SPLIT SYSTEM AIR CONDITIONER Model No Product Code No CAF 184 5 387106971 0 8180 393 1 09 2006 IMPORTANT Please read before installation This air conditioning system meets strict safety and operating standards For the installer or service person it is important to install or service the system so that it operates safely and efficiently For safe installation and trouble free operation you must Carefully read this instruction booklet before beginning Follow each installation or repair step exactly as shown Observe all local state and national electrical codes Pay close attention to all warning and caution notices given this manual The unit must be supplied with a dedicated electrical line AN BITES This symbol refers to a hazard or unsafe practice which can result in severe personal injury or death CAUTION This symbol refers to a hazard or unsafe practice which can result in personal injury or product or property damage 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 sale service outlet or your certified dealer for additional instructions In case of improper installation The manufacturer shall in no way be responsible for improper install
10. above Indoor heat exchanger temperature C K 6 d area Automatic capacity control b When the temperature drops below Point A the operation frequency is reduced by a certain proportion c area Frequency increase is prohibited When the temperature reaches Point C or above freezing prevention is ended and control is the same as in the area When the temperature drops to below 2 continuously for 2 minutes or longer the compressor stops Once the freeze condition is detected the air conditioner will work less than the maximum frequency until it is turned off 11 Cold air prevention during heating During heating the fan speed is set to LL very low or stopped As the temperature of the indoor heat exchanger rises the fan speed is changed to the set speed Set fan speed High Normal operation At start of operation LL Stopped 25 Approx 40 Indoor heat exchanger temperature NOTE The fan speed is forcibly changed to LL beginning 30 seconds after the thermostat turns OFF Normal operation refers to operation when the room temperature has approached the set temperature When HEAT operation starts the indoor fan is stopped until the temperature of the indoor heat exchanger reaches 20 C or higher or until the room temperature reaches 15 C or higher Changing the remote controller address
11. aised by 1 one hour after ECONOMY operation is set HEAT mode The indoor unit and outdoor unit fan speeds are automatically lowered for quiet operation The temperature setting is lowered by 3 one hour after ECONOMY operation is set In addition the temperature setting is lowered by 4 C after two hours have passed 10 B Lamp colors Operation lamp HEAT operation Red DRY operation Orange COOL operation Green TIMER lamp Green ON timer operation Operation starts when the time set for the ON timer is reached When a time is set the TIMER lamp illuminates The below comfort timer programming is performed A comfort time is calculated from the set temperature and the room temperature either 60 minutes prior or 30 minutes prior to the set ON timer time and operation is started in advance of the set ON time The indoor fan speed is Medium COOL Indoor temperature Set temperature Temperature difference HEAT Set temperature Indoor temperature Temperature difference Temperature difference Advance start time min 12 Temperature difference 60 6 Temperature difference 30 NOTE This function does not operate if the ON timer standby time is less than 30 minutes OFF timer operation Operation stops when the time set for the OFF timer is reached When a time is set the TIMER lamp illuminates Timer backup If the indoor unit is unable to rec
12. aluminium fins on the air conditioner can cut your fingers When installing ceiling or wall Make sure the ceiling wall is strong enough to hold the unit weight It may be necessary to build a strong wooden or metal frame to provide added support In a room Properly insulate any tubing run inside a room to prevent sweating which can cause dripping and water damage to walls and floors In moist or uneven locations Use a raised concrete base to provide a solid level foundation for the outdoor unit This prevents damage and abnormal vibrations In area with strong winds Securely anchor the outdoor unit down with bolts and a metal frame Provide a suitable air baffle In a snowy area for heat pump type systems Install the outdoor unit on a raised platform that is higher than drifting snow Provide snow vents When connecting refrigerant tubing 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 screw by hand and then tighten the nut with a torque wrench for a leak free connection Check carefully for leaks before starting the test run NOTE Depending on the system type liquid and gas lines may be either narrow or wide Therefore to avoid confusion the refrigerant tubing for your particular model is specified as narrow tube for liquid wide tu
13. ated 2 seconds OFF Buzzer sounds once while lamps are OFF Note If there is no trouble then self diagnostics lamps 1 2 and 3 do not illuminate and the buzzer does not sound Diagnostics is completed when the buzzer sounds 3 beeps After inspection or repair is completed be sure to move the operation switch on the indoor unit main body to the DEMO position turn the power ON and erase the diagnostics contents Then move the operation selector on the remote control receiver to the OFF position and check that the diagnostics contents have been erased before using the unit lt Indoor unit main body gt NORMAL oe Operation switch Ordinarily be sure this is always set to CU NORMAL NL The DEMO position is 1 used for inspections Operation selector and similar Ordinarily be sure this is always set to ON maintenance The OFF and TEST positions are used for inspections and similar maintenance 13 Details of Self Diagnostics When the operation selector on the grille assy is moved from the ON or TEST position to the OFF Self diagnostics position the indicator lamps will flash or remain ON for 5 seconds and then turn OFF for 2 seconds buzzer sounds once to indicate the presence of a sensor failure or the activation of a protective function Self diagnostics is completed when the buzzer sounds 3 beeps If there is no trouble the lamps do not flash Also note that the corresponding pa
14. ation or maintenance service including failure to follow the instructions in this document SPECIAL PRECAUTIONS During installation connect before the refrigerant system and then the wiring one proceed in the reverse orden when removing the units MES wren wiring ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY DEATH ONLY A QUALIFIED EXPERIENCED ELECTRICIANS SHOULD ATTEMPT TO WIRE THIS SYSTEM Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked to ensure the grounding 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 and death Ground the unit following local electrical codes The Yellow Green wire cannot be used for any connection different from the ground connection Connect all wiring tightly Loose wiring may cause overheating at connection points and a possible fire hazard Do notallow wiring to touch the refrigerant tubing compressor or any moving parts of the fan Do not use multi core cable when wiring the power supply and control lines Use separate cables for each type of line 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
15. be for gas When servicing Turn the power OFF at the main power board before opening the unit to check or repair electrical parts and wiring Keep your fingers and clothing away from any moving parts Clean up the site after the work remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced Ventilate the room during the installation or testng the refrigeration system make sure that after the installation no gas leaks are present because this could produce toxic gas and dangerous if in contact with flames or heat sources Table of Contents 1 SPECIFICATIONS 1 1 Unit specifications 1 2 Major Component specifications 1 3 Other Component specifications 2 DIMENSIONAL DATA 3 ELECTRICAL DATA 3 1 Electric Wiring Diagrams 4 FUNCTION 4 1 Operation Functions 4 2 Protective Functions 4 3 Drain Pump and Float Switch 5 TROUBLESHOOTING 6 CHECKING ELECTRICAL COMPONENTS 6 1 Measurement of Insulation Resistance 6 2 Checking Continuity of Fuse on PCB Ass y 6 3 Checking Motor Capacitor Page O1 gt N 11 12 13 17 17 18 1 SPECIFICATIONS 1 1 Unit Specifications CAF184MR5IA 220 240 V 50 Hz Voltage rating 230 Performance Capacity Air circulation High Med Low Controls Temperature controls See catalogue with the requested matching 790 660 580 Microprocessor thermostat Control unit Wireless remote co
16. eive the timer time end signal when the ON or OFF time is reached then timer time end occurs according to the indoor unit backup timer within approximately 26 minutes Operation stops if there are no operator controls for 25 hours or longer after unit operation switched from OFF to ON by use of ON timer operation 4 2 Protective Functions Overload prevention during heating During HEAT operation the temperature of the indoor heat exchanger is used to control the frequency and lessen the load on the compressor before the protective device is activated Approx Indoor heat exchanger 53 A Control start B Control end Approx 47 temperature l amp Indoor heat exchanger K a b gt t a area Automatic capacity control b When Point A has been exceeded the operation frequency is reduced by a certain proportion c area Frequency increase is prohibited At Point B and below overload prevention is ended and control is the same as in the a area Freeze prevention During COOL or DRY operation freezing is detected and operation is stopped when the temperature of the indoor heat exchanger matches the conditions below Freeze prevention operation is engaged when the temperature of the indoor heat exchanger is below 6 2 Restart after freeze prevention operation occurs when the temperature of the indoor heat exchanger reaches 8 C or
17. g mode Multi Operating mode before change operating mode after change COOL DRY DRY DRY COOL HEAT HEAT DRY HEAT HEAT HEAT f the remote controller is used to start automatic operation differing mode check is performed if the operating modes are not the same Desired temperature memory The set temperature in the program can be changed as desired within the range of 4 C This temperature can then be stored During automatic operation press the temperature setting buttons to change the temperature SENSOR DRY During automatic operation the system adjusts the room temperature and fan speed according to the conditions in the room in order to maintain a comfortable room environment SENSOR DRY operation DRY operation is as shown in the figure below Load COOL zone Azone B zone Conditions are monitored at all times when the room temperature is below 15 C The compressor operation frequency varies depending on the relative humidity The indoor fan operates with 1 f fluctuation The compressor operates at a low operating frequency The indoor fan operates with 1 f fluctuation Monitoring operation takes place when the room temperature is below 15 C When the monitoring range is entered the compressor stops and the indoor fan operates at LL PAM c control In order to further improve inverter performance control is switched between PWM contr
18. ing of the microcomputer and compressor This noise radiates through space and returns to electric wiring affecting any wireless devices televisions radios etc located nearby Locations most susceptible to noise Trouble The fundamental concept is to make the system less susceptible to noise Insulate for noise or distance from the noise source 1 Use shielded wires 2 Move unit away from the noise source Correction 1 Atelevision or radio is located near the A C and A C wiring 2 The antenna cable for a television or radio is located close to the A C and A C wiring 3 Locations where television and radio signals are weak 1 Noise appears in the television picture or the picture is distorted 2 Static occurs in the radio sound 16 Select a separate power source Keep the A C and A C wiring at least 1 meter away from wireless devices and antenna cables Change the wireless device s antenna to a high sensitivity antenna Change the antenna cable to a BS coaxial cable Use a noise filter for the wireless device Use a signal booster 6 CHECKING ELECTRICAL COMPONENTS 6 1 Measurement of Insulation Resistance The insulation is in good condition if the resistance exceeds 2MQ 6 1 1 Power Supply Wires Clamp the grounding terminal of the power plug with a lead clip of the insulation resistance tester and measure the resistance by placing a probe
19. inverter They retain an electrical charge charging voltage DC 280 V even after the power is turned OFF and some time is required for the charge to dissipate Be careful not to touch any electrified parts before the controller LED red turns OFF If the outdoor controller is normal approximately 30 seconds will be required for the charge to dissipate However allow at least 5 minutes for the charge to dissipate if there is thought to be any trouble with the outdoor controller After inspection or repair is completed be sure to move the operation switch to the DEMO position turn the power ON and erase the diagnostics contents Method of self diagnostics If the indoor unit operation lamp is flashing every 0 5 seconds follow the procedure below to perform detailed trouble diagnostics 1 If the operation lamp flashes every 0 5 seconds immediately when the power is turned ON there is an external ROM OTP data failure on the indoor circuit board or a board insertion problem or the board has not been installed 2 The failure mode is stored in memory even when the power is not ON Follow the procedure below to perform diagnostics PROCEDURE Turn the power switch ON Move the operation selector on the remote control receiver to OFF self diagnostics If there is a sensor failure or a protective function has activated self diagnostics lamps 1 2 and 3 will illuminate in the following pattern 5 seconds flashing illumin
20. n check the indoor unit Using the TEST T RUN terminals TESA RUN terminals T RUN Test run compressor and fan motor turn ON TEST MV Compresses time to 1 60th accelerates operation by 60 times faster than normal Fully opens the electric expansion valve T RUN COM 15 lt Noise malfunction and electromagnetic interference gt An inverter A C operates using pulse signal control and high frequencies Therefore it is susceptible to the effects of external noise and is likely to cause electromagnetic interference with nearby wireless devices A noise filter is installed for ordinary use preventing these problems However depending on the installation conditions these effects may still occur Please pay attention to the points listed below Noise malfunction This refers to the application of high frequency noise to the signal wires resulting in abnormal signal pulses and malfunction Locations most susceptible to noise Trouble Correction 1 Locations near broadcast stations where there are strong electromagnetic waves 2 Locations near amateur radio short wave stations 3 Locations near electronic sewing machines and arc welding machines Either of the following trouble may occur 1 The unit may stop suddenly during operation 2 Indicator lamps may flicker Electromagnetic interference This refers to the noise generated by high speed switch
21. ntrol unit Timer ON OFF 24 hours amp Daily program 1 hour OFF Fan speed 3 and Auto 1 Hi Airflow direction Auto Air Filter Washable Anti Mold Power noise level High Med Low 54 49 46 Refrigerant tubing connections Flare type Refrigerant Narrow tube 6 35 1 4 tube diameter Wide tube 9 52 3 8 Refrigerant R410A Refrigerant tube kit Air clean filter Dimensions amp Weig Dimensions Height Width Depth Optional Ceiling panel Height Width Depth Package dimensions Unit Height Width Depth Volume Ceiling panel Height Width Depth Volume Unit Net Shipping Ceiling panel Net Shipping 1 2 Major Component Specifications CAF184MR5IA Controller PCB Part No CB XMRV183EH Controls Microprocessor Control circuit fuse 250V 3 15A Remote Control Unit RCS 3MVHPS4E Fan amp Fan Motor Centrifugal fan Dia and lenght 1 280 L 166 Fan motor model Q ty K35407 M01972 1 No of poles rpm 230 V High 2nd 3rd Low 4 880 740 660 290 Running Amps 0 27 Power input 61 Coil resistance Ambient temp 20 C BLU BRN 33 939 1 BLU BLK 325 374 BLK GRY 78 7 90 5 GRY RED 49 7 57 2 RED WHT YEL 155 178 Safety devices Type Internal thermal protector Operating temp 150 10 Automatic Run capacitor 2 400 Flap Motor Type Stepping motor Model MP24GA2
22. ol at low operation speeds and PAM control at high operation speeds making the most effective use of power Raises the power but remains in the same operating mode This function is set with the HIGH POWER button on the remote controller It is set regardless of the temperature and fan speed settings HIGH POWER operation from the remote controller The unit operates at maximum output for 15 minutes regardless of the desired temperature The fan speed is 1 step above High Frequency Start End MAX NOTE When HIGH POWER operation ends the unit operates at low Hz for 5 minutes regardless of the thermostat OFF conditions When in DRY mode operation is in the cooling zone When in HEAT mode defrosting does not occur during HIGH POWER operation If HIGH POWER is set while defrosting is in progress HIGH POWER operation begins after defrosting ends HIGH POWER operation cannot be set from the remote controller when the unit is stopped HIGH POWER operation and ECONOMY operation cannot be used at the same time The function set last takes priority ECONOMY When ECONOMY operation is set the temperature and fan Speed settings will be adjusted automatically to allow comfortable sleep When ECONOMY operation is set mark appears on the remote controller COOL and DRY modes The indoor unit fan speed is automatically lowered for quiet operation The temperature setting is r
23. rom fan motor compressor and other parts Metallic part Clip Insulation tester Fig 4 17 6 2 Checking Continuity of Fuse on PCB Ass y Remove the PCB Ass y from the electrical component box Then pull out the fuse from the PCB Ass y Fig 5 Check for continuity using a multimeter as shown in Fig 6 6 3 Checking Motor Capacitor Remove the lead wires from the capacitor terminals and then place a probe on the capacitor terminals as shown in Fig 7 Observe the deflection of the pointer setting the resistance measuring range of the multimeter to the maximum value The capacitor is good if the pointer bounces to a great extent and then gradually returns to its original position The range of deflection and deflection time differ according to the capacity of the capacitor 18 Fuse PCB Ass y gt 2 Compressor motor capacitor Fuse V Fan motor capacitor Multimeter Fig 5 Fig 6 Fig 7 3 Jechnibel 28 Reyrieux BP 131 01601 Tr voux CEDEX France T l 04 74 00 92 92 Fax 04 74 00 42 00
24. rts listed below may not be present in some models INDICATION ON IND U 3 FLASHING TEM OPR TMR SRV CODE DIAGNOSTICS ITEM DIAGNOSTICS CONTENTS X X 501 ROOM TEMPERATURE SENSOR FAILURE SENSOR OPEN CIRCUIT OR SHORT CIRCUIT CONTACT FAILURE AT CONNECTOR OR OPEN CIRCUIT AT TERMINAL CRIMPING LOCATION X 3 X 502 INDOOR HEAT EXCHANGER SENSOR FAILURE SHORT CIRCUIT DETECTION ONLY FOR THE HUMIDITY SENSOR 3 X 503 HUMIDITY sensor FAILURE INDOOR OUTDOOR CIRCUIT BOARD FAILURE SO4 COMPRESSOR TEMPERATURE SENSOR FAILURE x SH SENSOR FAILURE SENSOR OPEN CIRCUIT OR SHORT CIRCUIT xe X 505 20910008 HEAT EXCHANGER SENSOR FAILURE CONTACT FAILURE AT CONNECTOR OR OPEN CIRCUIT AT TERMINAL CRIMPING LOCATION OUTDOOR AIR SENSOR TENPERATUEE FAILURE OUTDOOR CIRCUIT BOARD FAILURE X XH 506 OUTDOOR WIDE TUBING SENSOR FAILURE XK XK 3 507 OUTDOOR ELECTRICAL CURRENT SENSOR FAILURE OUTDOOR CIRCUIT BOARD FAILURE xe x x Eo1 INDOOR OUTDOOR COMMUNICATIONS FAILURE 1 MISWIRING 2 AC POWER FAILURE 3 BLOWN FUSE 4 POWER RELAY FAILURE SERIAL COMMUNICATIONS 5 INDOOR OR OUTDOOR CIRCUIT BOARD FAILURE 1 OR POWER TR FAILURE 2 OUTDOOR FAN DOES NOT TURN 34 Eo2 HIC CIRCUIT FAILURE 3 INSTANTANEOUS POWER OUTAGE 4 SERVICE VALVE NOT OPENED POWER TR CIRCUIT FAILURE 8 OUTDOOR FAN BLOCKED 8 CONTINUOUS OVERLOAD OPERATION 7 COMPRESSOR FAILURE 80
25. t 220 V is output toterminals 1 and 2 If it is not output there is a failure related to the indoor unit power Only operation lamp illuminates 14 if the self diagnostics function fails to operate No indicators illuminate and the Check the indoor unit indoor fan does not turn Check the power voltage Blown Is the fuse blown Normal Replace the controller Checking the indoor and outdoor units gt Checking the indoor unit Replace the circuit board or the fuse Control Check items unit operation Set operation selector of indoor unit main The rated voltage must be present between inter unit cables 1 and 2 body to DEMO and start operation using the Connect a 5 kQ resistor between inter unit cables 2 and 3 When the remote controller voltage at both ends is measured approximately 12 15 V DC must be output and the needle must fluctuate once every 8 seconds In addition insert an LED jig and check that the LED flickers once every 8 seconds If there are no problems with the above then check the outdoor unit Checking the outdoor unit Control Check items unit operation Apply the rated voltage between outdoor The control panel LED red must illuminate unit terminals 1 and 2 Short circuit the outdoor unit COM terminal The compressor and fan motor must turn ON to the T RUN terminal If there are no problems with the above the
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