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Panasonic CS-MS12SD3H, Service Manual, Page: 67 / 78

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Panasonic CS-MS12SD3H Service Manual Download Page 67

67 

14.  Disassembly and Assembly Instructions 

 

WARNING 

 

  High Voltage are generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding    
  with repair work. Failure to heed this caution may result in electric shocks.

 

14.1  Indoor Electronic Controller, Blower Fan, Fan Motor & Drain Motor 

Removal Procedure. 

14.1.1  To Remove Cabinet Bottom Plate 

1  Unscrew 14 screws on the cabinet bottom plate, 10 screws on the cabinet top plate and detach cabinet 

bottom plate and cabinet top plate from unit. 

 

Remove 14 Screw

Cabinet top plate

Cabinet bottom plate

Remove 10 Screw

 

14.1.2  To Remove Electronic Controller 

1  Unscrew the 2 screws on the Control Board and open the Control Board Cover. 

 

Remove  Screw

 

 
2  Detach all connectors as labeled from the electronic controller. Then pull out main controller gently. 
 

CN-T1

CN-T2

CN-FM

CN-TH

CN-DISP

CN-FSW

CN-DRMTR1

CN-AC

 

Summary of Contents for CS-MS12SD3H

Page 1: ...ial dangers in attempting to service a product Products powered by electricity should be serviced or repaired only by experienced professional technicians Any attempt to service or repair the products dealt with in this service information by anyone else could result in serious injury or death There are special components used in this equipment which are important for safety These parts are marked...

Page 2: ...5 11 3 Powerful Mode Operation 35 11 4 Timer Control 35 11 5 Auto Restart Control 36 11 6 Indication Panel 36 11 7 Drain Pump Control 36 11 8 Pump Down Operation By CN S 36 12 Servicing Mode 37 12 1 TEST RUN OPERATION FOR PUMP DOWN SERVICING PURPOSE 37 13 Troubleshooting Guide 38 13 1 Refrigeration Cycle System 38 13 2 Relationship Between the Condition of the Air Conditioner and Pressure and Elec...

Page 3: ... of air etc will cause abnormal high pressure in refrigeration cycle and result in explosion injury etc 8 Do not add or replace refrigerant other than specified type It may cause product damage burst and injury etc 9 For R410A model use piping flare nut and tools which is specified for R410A refrigerant Using of existing R22 piping flare nut and tools may cause abnormally high pressure in the refr...

Page 4: ...frigerant gas leakage during operation It may cause toxic gas when the refrigerant contacts with fire 23 This equipment must be properly earthed Earth line must not be connected to gas pipe water pipe earth of lightning rod and telephone Otherwise it may cause electrical shock in case of equipment breakdown or insulation breakdown CAUTION 1 Do not install the unit at place where leakage of flammab...

Page 5: ...80 SHi rpm 1380 1430 Moisture Removal L h 1 6 1 8 Indoor Airflow QLo m3 min ft3 min 7 60 270 7 60 270 Lo m3 min ft3 min 8 10 290 8 10 290 Me m3 min ft3 min 10 80 380 10 80 380 Hi m3 min ft3 min 13 20 465 13 20 465 SHi m3 min ft3 min 14 50 510 15 00 530 Dimension Height I D mm inch 200 7 7 8 200 7 7 8 Width I D mm inch 750 29 17 32 750 29 17 32 Depth I D mm inch 640 25 7 32 640 25 7 32 Weight Net I...

Page 6: ... Maximum C 32 23 32 23 Minimum C 16 11 16 11 1 Cooling capacities are based on indoor temperature of 27 C DRY BULB 80 6 F DRY BULB 19 0 C WET BULB 66 F WET BULB and outdoor air temperature of 35 C DRY BULB 95 F DRY BULB 24 C WET BULB 75 2 F WET BULB 2 Specifications are subject to change without notice for further improvement ...

Page 7: ...i rpm 1530 1530 Moisture Removal L h 2 7 3 3 Indoor Airflow QLo m3 min ft3 min 8 80 310 8 80 310 Lo m3 min ft3 min 9 40 330 9 40 330 Me m3 min ft3 min 12 60 450 12 60 450 Hi m3 min ft3 min 15 50 545 15 50 545 SHi m3 min ft3 min 16 00 570 16 00 570 Dimension Height I D mm inch 200 7 7 8 200 7 7 8 Width I D mm inch 750 29 17 32 750 29 17 32 Depth I D mm inch 640 25 7 32 640 25 7 32 Weight Net I D kg...

Page 8: ...e Maximum C 32 23 32 23 Minimum C 16 11 16 11 1 Cooling capacities are based on indoor temperature of 27 C DRY BULB 80 6 F DRY BULB 19 0 C WET BULB 66 F WET BULB and outdoor air temperature of 35 C DRY BULB 95 F DRY BULB 24 C WET BULB 75 2 F WET BULB 2 Specifications are subject to change without notice for further improvement ...

Page 9: ... Example The indoor units combination below is possible to connect to CU 3S27SBH Total nominal capacity of indoor units is between 5 6 kW to 13 2 kW 1 Two CS MS9SD3H only Total nominal cooling capacity is 5 6 kW 2 One CS MS9SD3H and Two CS MS12SD3H Total nominal cooling capacity is 9 2 kW Indoor Unit CS MS9 12SD3H Outdoor Unit CU 2S18SKH Indoor unit capacity Cooling Cooling Capacity kW Input Power...

Page 10: ...4 0 4 0 7 50 2 8 8 0 2170 590 2820 10 7 9 8 1 5 1 5 1 5 4 0 4 0 5 0 7 50 2 8 8 0 2070 540 2650 10 2 9 4 1 5 1 5 1 7 Indoor Unit CS MS9 12 18 24SD3H Outdoor Unit CU 3S28SBH Indoor unit capacity Cooling Cooling Capacity kW Input Power W Current 50Hz 220V 240V A MOISTURE REMOVAL VOLUME l h Total min max Rating min max 1 Room 2 8 2 80 1 7 3 4 700 380 890 3 7 3 4 1 6 3 2 3 20 1 7 4 0 800 380 1200 4 2 3...

Page 11: ...it CU 4S27SBH Indoor unit capacity Cooling Cooling Capacity kW Input Power W Current 50Hz 220V 240V A MOISTURE REMOVAL VOLUME l h Total min max Rating min max 2 Room 2 8 2 8 5 60 1 7 6 4 1750 420 2600 8 7 8 0 1 6 1 6 2 8 3 2 6 00 1 7 6 5 2010 420 2600 10 0 9 2 1 6 1 8 2 8 4 0 6 80 2 5 7 3 2420 550 3330 12 0 11 0 1 6 2 3 2 8 5 0 7 50 2 7 7 7 2810 530 3310 13 9 12 7 1 6 2 6 3 2 3 2 6 40 2 3 7 1 2290...

Page 12: ...0 5 0 10 00 2 5 10 4 3610 300 4000 2 77 D 1805 17 4 16 0 2 7 2 7 5 0 6 0 10 00 2 5 10 4 3610 300 4000 2 77 D 1805 17 4 16 0 2 5 2 9 5 0 7 0 10 00 2 5 10 4 3470 300 3850 2 88 C 1735 16 7 15 3 2 4 3 2 6 0 6 0 10 00 2 5 10 4 3610 300 4000 2 77 D 1805 17 4 16 0 2 7 2 7 6 0 7 0 10 00 2 5 10 4 3470 300 3850 2 88 C 1735 16 7 15 3 2 5 2 9 7 0 7 0 10 00 2 5 10 4 3320 330 3690 3 01 B 1660 16 0 14 7 2 7 2 7 ...

Page 13: ...2 9 1 4 1 4 1 4 2 2 2 8 2 8 2 8 6 0 10 00 2 9 11 0 2930 470 3690 3 41 A 1465 14 1 12 9 1 3 1 3 1 3 2 4 2 8 2 8 2 8 7 0 10 00 2 9 11 0 2930 500 3610 3 41 A 1465 14 1 12 9 1 2 1 2 1 2 2 5 2 8 2 8 3 2 3 2 10 00 2 9 10 6 3070 430 3600 3 26 A 1535 14 8 13 6 1 5 1 5 1 6 1 6 2 8 2 8 3 2 4 0 10 00 2 9 10 8 3070 430 3770 3 26 A 1535 14 8 13 6 1 4 1 4 1 5 1 8 2 8 2 8 3 2 5 0 10 00 2 9 10 8 2930 500 3440 3 4...

Page 14: ...0 A 1430 13 8 12 6 1 3 1 3 1 5 2 1 3 2 3 2 4 0 7 0 10 00 2 9 11 2 2860 550 3610 3 50 A 1430 13 8 12 6 1 2 1 2 1 5 2 3 3 2 3 2 5 0 5 0 10 00 2 9 11 2 2800 600 3540 3 57 A 1400 13 5 12 4 1 3 1 3 1 7 1 7 3 2 3 2 5 0 6 0 10 00 2 9 11 2 2800 600 3540 3 57 A 1400 13 5 12 4 1 2 1 2 1 7 2 0 3 2 4 0 4 0 4 0 10 00 2 9 11 0 3000 460 3770 3 33 A 1500 14 5 13 3 1 4 1 6 1 6 1 6 3 2 4 0 4 0 5 0 10 00 2 9 11 2 28...

Page 15: ...nge Orange Orange Remote control receiver 3 2 Remote Control AIR CONDITIONER OFF ON ON OFF SET CANCEL 1 2 3 TIMER MODE TEMP POWERFUL QUIET FAN SPEED CLOCK SET CHECK RESET AC RC MODE Remote control display Powerful operation Operation mode OFF ON Quiet operation Fan Speed selection Temperature setting Timer setting Clock setting ...

Page 16: ...R INLET 23 132 220 220 132 14 14 23 155 120 23 40 23 200 150 DRAIN PORT UPPER LOWER 120 33 80 143 44 238 81 WATER INLET 28 84 30 10 2 Ø 3 1 HOLE 87 64 Remote Control Holder 59 22 144 5 Remote Control AIR CONDITIONER OFF ON ON OFF SET CANCEL 1 2 3 TIMER MODE TEMP POWERFUL QUIET FAN SPEED CLOCK SET CHECK RESET AC RC MODE Top View Receiver Side View Side View Front View Back View Unit mm 70 120 20 ...

Page 17: ...17 5 Refrigeration Cycle Diagram INDOOR INTAKE TEMP SENSOR PIPE INLET TEMP SENSOR 2 PIPE TEMP SENSOR 1 LIQUID SIDE 2 WAY VALVE 3 WAY VALVE GAS SIDE HEAT EXCHANGER EVAPORATOR COOLING ...

Page 18: ...18 6 Block Diagram FUSE FM DM SC Indoor Unit 1 2 3 ...

Page 19: ...t BL BL t INDOOR PIPE TEMPERATURE SENSOR 2 INDOOR PIPE TEMPERATURE SENSOR 1 INDOOR AIR TEMPERATURE SENSOR ELECTRONIC CONTROLLER DISPLAY RECEIVER M MOTOR Y B W BL BL BL BR BL BL Y BR GR R O W V BL GR BL W R R CN DRMTR1 BLUE Y Y G DRAIN PUMP Y G M 1 3 2 1 3 5 7 COMMUNICATION CIRCUIT NOISE FILTER CIRCUIT CN AC WHITE GROUNDING TERMINAL TERMINAL BOARD TO OUTDOOR UNIT 1 2 3 4 5 6 7 8 O O R R CN T1 BLUE ...

Page 20: ... 1k KB C38 0 01u R56 10k 1 3 FLOAT SWITCH BL BL KB C35 1000p 50V R65 10k 5V R66 1k 5 1 10W 1 5 CN CNT WHITE L5 L6 R82 10k R90 10k KB C66 1000p 50V KB C52 1000p 50V C57 C56 5V 5V 12V 5V KB C51 1u 10V KB C55 0 1u 25V KB C54 0 1u 25V KB C53 0 1u 25V KB C31 1u 10V KB C30 1u 10V R89 20 0k 1 R63 20 0k 1 R62 15 0k 1 R97 1k R96 1k R95 1k DB3 S1WB A 60 R74 22k 1 4W R87 22k 1 4W C45 DB2 S1WB A 60 R75 5 1k Q...

Page 21: ...21 9 Printed Circuit Board 9 1 Indoor Unit 9 1 1 Main Printed Circuit Board CN T2 CN FM CN TH CN T1 CN AC CN DRMTR1 CN DISP CN FSW ...

Page 22: ...n For refrigerant piping insulation foamed polyethylene with a thickness of 8 mm or more For drain piping insulation foamed polyethylene with a thickness of 10 mm or more Indoor outdoor connecting cable 4 1 5 mm2 flexible cord designation type 60245 IEC 57 H05RN F Hanging bolt related parts Hanging bolts M10 4 and nuts 12 when hanging the indoor unit A Indoor unit Outdoor unit IMPORTANT Begin the ...

Page 23: ...t pests from damaging the cables e g mice biting the connection cable 4 Finish by sealing the sleeve with putty or caulking compound at the final stage 15 mm Putty or caulking compound ø70 mm through hole Sleeve for tube assembly Approx 5 7 mm Bushing for tube assembly Wall Outdoor Indoor 10 1 3 Installing the Indoor Unit Installation Embedded in the Ceiling 10 1 3 1 Preparation Before Installatio...

Page 24: ...onent box Refrigerant tubing Min 650 or more Min 200 or more Min 200 or more Min 100 mm or more for bottom air intake Ceiling Min 20 or more Min 20 or more H Min 240 200 H dimension means the minimum height of the unit installation space Select H dimension such that a downward slope of at least 1 100 is ensured Refer to 11 1 4 Connecting the drain piping ...

Page 25: ...ess 450x450 Field supply 14 In Case of Bottom Intake 1 Remove the frame filter assy as shown in diagram 1 2 Remove cover plate as shown in diagram 1 3 Fix frame filter assy as shown in diagram 2 4 Fix cover plate as shown in diagram 2 with the dummy hole downward 1 2 Dummy hole Dummy hole Air intake Air intake Frame Filter Assy Air discharge Air discharge Cover plate Cover plate Frame Filter Assy ...

Page 26: ...Consult your construction or interior contractor for details on finishing the ceiling opening Installing an Intake and Discharge Duct Type Ensure the range of unit external static pressure is not exceeded Refer technical manual for the range of external static pressure setting Connect the duct as shown When attaching duct to the intake side remove the product filter frame assy and replace with loc...

Page 27: ... electromagnetic noise Remove the bottom case Insert the driver and slightly turn Bottom case Flat blade screwdriver Attention Mounting the bottom case 1 Tighten the screws securely until the screw heads touch the bottom case Otherwise loose screw heads may hit the PCB and cause malfunction when mounting the top case 2 Do not over tighten the screws The bottom case may be deformed resulting in fal...

Page 28: ...onnector Control box Mount to the wall EXPOSED TYPE Clamper supplied Pass through the hole Preparation Make 2 holes for screws using a driver Mount the top case Align the claws of the top case and then align the claws of the bottom case Mount the bottom case to the wall Connect the remote control wiring Arrange the wires along the groove of the case Cut here with a nipper and remove the burr with ...

Page 29: ...ase and then align the claws of the bottom case Mount the bottom case to the wall Pass the wire through the hole in the centre of the bottom case Connect the remote control wiring Avoid the wire being caught Claw 2 places Hole for screw Claw Wood screw supplied Terminal board Top case Back side Bottom case Back side ...

Page 30: ...ng from being extended smoothly the drain piping can be raised outside of the main unit as shown in the illustration below Drain hose insulation Drain hose Hard PVC pipe VP20 Hose band 13 Unit drain port Do not use adhesive Adhere with PVC adhesive 12 14 Rise Hill Trap 300 mm or less not a downward gradient 500 mm or less Good At least 1 100 CAUTION Strictly do not install and extend the drain pip...

Page 31: ... o Ensure that the terminal numbers on the indoor unit are connected to the same terminal numbers on the outdoor unit by the right coloured wires as shown in the diagram o Earth lead wire should be longer than the other lead wires as shown in the diagram for electrical safety purpose in case the cord slips out from the anchorage o Secure the cable onto the control board with the holder clamper Ter...

Page 32: ...able 10 1 8 Note Enabling long range remote control To maintain EMC emission limits cabling interconnecting the HA terminal and subsequent opto coupler must be no more than 1 9 m length Loop four turns of this cable through a suitable small EMC ferrite toroid and protect with a short length of large diameter heat shrink tube There is no similar length limit for cable following on from the opto cou...

Page 33: ... and the operation environment The final shifted value will be used as internal setting temperature and it is updated continuously whenever the electrical power is supplied to the unit Remote Control Setting Temperature 16ºC 30ºC Auto Operation Mode Shifting Outdoor Air Temperature Shifting Powerful Mode Shifting Fan Speed Shifting Start Up Shifting Internal Setting Temperature Setting Temperature...

Page 34: ...e is decided o If 2 C indoor intake temperature remote control setting temperature 3 C maintain with previous mode Maintain Cool Dry 2 1 0 1 2 3 4 5 6 11 1 5 Indoor Fan Motor Operation A Basic Rotation Speed rpm i Manual Fan Speed Cooling Dry Fan motor s number of rotation is determined according to remote control setting Remote Control O O O O O Tab rpm Hi Me Me Me Lo ii Auto Fan Speed Cooling Dr...

Page 35: ...essor frequency reduced 11 3 Powerful Mode Operation When the powerful mode is selected the internal setting temperature will shift lower up to 2 C for Cooling Soft Dry than remote control setting temperature and the fan speed will increase to achieve the setting temperature quickly 11 4 Timer Control There are 2 sets of ON and OFF timer is available to turn the unit ON or OFF at different preset ...

Page 36: ...inks there is an abnormality operation occurs 11 7 Drain Pump Control This unit has built in with drain pump Control content During COOL DRY mode o During COOL DRY mode drain pump starts 10 seconds after indoor fan motor starts o The drain pump turns ON and turns OFF periodically ON or OFF duration depends on room temperature After COOL DRY mode when unit turns OFF power standby or changes to HEAT...

Page 37: ...ON FOR PUMP DOWN SERVICING PURPOSE The Test Run operation will be activated by short circuiting CN S Pin 1 2 at outdoor unit PCB after power supplied to outdoor unit terminal 1 and 2 The unit forced to run rated frequency cooling operation mode ...

Page 38: ...inutes after an operation is started at cooling mode Less than 8 C at the cooling mode Higher than specified Lower than specified Cooling Mode High Low Low Value of electric current during operation Gas side pressure Dusty condenser preventing heat radiation Excessive amount of refrigerant Inefficient compressor Measuring gas side pressure Measuring the air temperature difference Measuring electri...

Page 39: ...w Pressure High Pressure Electric current during operation Insufficient refrigerant gas leakage Clogged capillary tube or Strainer Short circuit in the indoor unit Heat radiation deficiency of the outdoor unit Inefficient compression Carry out the measurement of pressure electric current and temperature fifteen minutes after an operation is started ...

Page 40: ...ower on 2 Press the CHECK button on the remote control 3 will be displayed on the remote control display Note Display only for No signal transmission no receiving sound and no Power LED blinking 4 Press the TIMER or button on the remote control The code H00 no abnormality will be displayed and signal will be transmit to the main unit 5 Each press of the button or will increase error code number an...

Page 41: ...temperature sensor defective or disconnected H34 Outdoor heat sink temperature sensor abnormality Continue for 2 sec Outdoor heat sink temperature sensor defective or disconnected H35 Indoor drain water adverse current abnormal H36 Gas pipe temperature sensor abnormality Continue for 5 sec Gas pipe temperature sensor defective or disconnected H37 Outdoor liquid pipe temperature sensor abnormality ...

Page 42: ...ion 7 times occurrence continuously Outdoor PCB IPM Power transistor Compressor Note Frequency measured and fan speed fixed For cooling only model it is the indication when indoor heat exchanger sensor or indoor air intake sensor has abnormality The memory data of error code is erased when the power supply is cut off or press the Auto Switch until beep sound heard following by pressing the CHECK b...

Page 43: ...tage at terminal 2 3 communication terminals of outdoor unit terminal board Is the measured DC voltage fluctuate between 20 70Vdc Measure the AC voltage at terminal 1 2 of indoor unit terminal board Is the measured voltage 230 240V Measure the DC voltage at terminal 2 3 of indoor unit terminal board Is the measured DC voltage fluctuate between 20 50Vdc YES NO NO NO NO AC power supply abnormal fluc...

Page 44: ... indoor and outdoor units Troubleshooting When abnormality indication starts again Is there any wiring error YES Matched compatibility Correct the indoor outdoor unit connection wires Check the indoor and outdoor unit connection wires Check the spare part numbers of the indoor and outdoor unit PCBs and compare with their Part Lists Change for the specified indoor or outdoor unit PCB Replace the in...

Page 45: ...the indoor intake air temperature sensor Plug out connector from the indoor unit PCB Measure the resistance of the indoor intake air temperature sensor Is the measured resistance of the indoor intake air temperature sensor matches the value specified in its characteristic chart Replace the indoor intake air temperature sensor Defect in indoor unit PCB Replace the indoor unit PCB Check the connecto...

Page 46: ... temperature sensor Plug out connector from the outdoor unit PCB Measure the resistance of the outdoor compressor temperature sensor Is the measured resistance of the outdoor compressor temperature sensor matches the value specified in its characteristic chart Check the connector connection Turn off the power Check the connector connection Is the connector connection normal YES NO NO YES Connector...

Page 47: ... Graph In forced cooling check suction ressure Running current and suction pressure is Compressor Lack Compression Replace Compressor Check replace defected CT Running current is much too low and Check for gas leaking source Repair normal Suction pressure and running current is for Temp vs Current and Pressure versus running current very low blockage Replace defected part s Capillary tube expansio...

Page 48: ... off power supply and rotate fan by hand Replace fan motor Does fan rotate smoothly Turn power supply on and operate fan Replace indoor PCB Replace fan motor Turn off power supply and disconnect fan motor connector then turn power on NO YES YES NO Does it rotate Stop fan motor Check the rotation feedback output from fan motor Rotate the fan motor by hand is the rotation feedback voltage 15Vdc pin ...

Page 49: ...nsor Plug out connector from the outdoor unit PCB Measure the resistance of the outdoor intake air temperature sensor Defect in outdoor intake air temperature sensor Replace the outdoor intake air temperature sensor Detect in outdoor unit PCB Replace the outdoor unit PCB Check the connector connection Plug out connector from the indoor unit PCB Measure the resistance of the indoor pipe temperature...

Page 50: ...resensor Plug out connector from the outdoor unit PCB Measure the resistance of the outdoor intake air temperature sensor Is the measured resistance of the outdoor intake air temperature sensor matches the value specified in its characteristic chart Replace the outdoor intake air temperature sensor Defect in outdoor unit PCB Replace the outdoor unit PCB Check the connector connection Plug out conn...

Page 51: ...sured resistance of the outdoor air temperature sensor matches the value specified in its characteristic chart Defect in outdoor air temperature sensor Replace the outdoor air temperature sensor Defect in outdoor unit PCB Replace the outdoor unit PCB Check the connector connection Turn off the power Check the connector connection Is the connector connection normal Connector poor contact Correct th...

Page 52: ...e sensor Plug out connector from the outdoor unit PCB Measure the resistance of the outdoor heat exchanger temperature sensor Defectin outdoor heat exchanger temperaturesensor Replace the outdoor heat exchanger temperaturesensor Defectin outdoor unit PCB Replace the outdoor unit PCB Checkthe connectorconnection Turnoff the power Checkthe connectorconnection Is the connector connection normal Conne...

Page 53: ...en abnormality indication starts again Check the outdoor discharge pipe temperature sensor Plug out connector from the outdoor unit PCB Measure the resistance of the outdoor discharge pipe temperature sensor Defect in outdoor discharge pipe temperature sensor Replace the outdoor discharge pipe temperature sensor Defect in outdoor unit PCB Replace the outdoor unit PCB Check the connector connection...

Page 54: ...roubleshooting When abnormality indication starts again Is indoor unit and outdoor unit model numbers matched NO Match the compatible model follow specification Check indoor and outdoor units model number Check the indoor and outdoor PCB part number and compare if they matched part list Change for the specified indoor or outdoor unit PCB NO YES Replace the indoor and outdoor unit PCB For safety re...

Page 55: ...d rotate fan by hand Replace fan motor Does fan rotate smoothly Turn power supply on and operate fan Replace outdoor PCB Replace fan motor Turn off power supply and disconnect fan motor connector then turn power on NO Does it rotate Stop fan motor Check the rotation feedback output from fan motor Rotate the fan motor by hand is the rotation feedback voltage 15Vdc pin 1 4 generated Check the output...

Page 56: ...dirty Clean the air filter Clean the indoor unit heat exchanger YES Check the dust accumulation on the indoor unit heat exchanger Is the indoor unit heat exchanger dirty Defect in indoor pipe temperature NO Check the indoor pipe temperature thermistor Check the piping installation condition YES Is the measured resistance of the indoor pipe temperature Plug out connector CN TH from the indoor unit ...

Page 57: ...t exchanger dirty Clean the indoor unit heat exchanger Check the dust accumulation on the indoor unit heat exchanger Does it conform to the sensor characteristic chart Check the indoor pipe temperature sensor Replace the indoor pipe temperature sensor Reclaim and recharge with correct amount of refrigerant Replace the indoor unit PCB YES NO NO NO NO YES YES NO YES Check if 2 3 way valve is closed ...

Page 58: ...0 10 10 0 10 20 30 40 50 0 1 Pipe temp Sensor 2 Intake Air Temp Sensor 1 2 When abnormality indication starts again Does it cable connection loose or connector broken Check the indoor pipe temperature sensor connection Correct loose or broken cable connector YES Check the indoor pipe temperature characteristic Does it conform to specification Replace the indoor pipe temperature sensor NO NO The pr...

Page 59: ...ctuation AC power supply abnormal surge Defect in PFC circuitry Replace the outdoor unit PCB YES 280Vdc Defect in outdoor fan motor Replace outdoor fan motor NO Defect in compressor Replace compressor NO Defect in reactor Replace reactor YES YES Verify PFC abnormality by measuring DC voltage between Is the DC voltage between DCP and DCN normal Confirm the DC voltage between CN FM 1 and 4 when YES ...

Page 60: ... gas amount is OK NO closed When F91 indication happens Check 3 way valve 3 way valve opened Open 3 way valve YES Check for gas leaking source Check for gas leaking source Refer to H16 Gas leaking Check other parts in refrigeration cycles Repair or replace defected part s Re claim and then re charge the right amount For safety reason and to prevent component breakdown always switch off the power b...

Page 61: ...nnection at outdoor PCB and compressor terminal Is the connector connection normal From the disconnected harnesses U V and Disconnect the harnesses U V and W from the compressor terminal Is the blinking of the 6 LEDs in same sequence condition IPM defective Replace outdoor unit PCB NO Connector poor contact Correct the connection NO YES Replace compressor condition Check the inverter checker 6 LED...

Page 62: ...diation Reset the error code and turn on the unit Reinstall the outdoor unit Remove the obstacle s Clean the outdoor heat exchanger Is the outdoor fan motor operating Measure the AC DC voltage between pins of connector CN FM outdoor unit PCB Is the voltage supplied to the outdoor NO Defect in outdoor heat exchanger thermistor Replace the outdoor heat exchanger thermistor NO 0V Defect in outdoor un...

Page 63: ...erheats due to defective of outdoor fan motor IPM overheats due to defective of internal circuitry of IPM IPM overheats due to defective IPM temperature sensor Multi Models Only o Compressor OL connector poor contact o Compressor OL faulty Troubleshooting Is outdoor fan motor operating When F96 indication happens Check the outdoor unit installation condition during cooling or soft dry operation Re...

Page 64: ... 2 3 way valve YES NO Does it conform to the sensor characteristic chart Replace the compressor tank temperature sensor NO YES Check for gas leakage Oil oozing out from the 2 3 way valve Repair the pipe flare or union nuts Reclaim and recharge refrigerant Replace the capillary tube or dryer YES NO YES Reclaim and recharge for a specified amount of fresh refrigerant Refrigerant cycle abnormality er...

Page 65: ...f power supply Check the main circuit electrolytic capacitor When F98 indication happens Get restarted and measure the input current NO Is Input current specification Replace the outdoor unit PCB NO YES Normal Check refrigerant amount Repair the pipe flare or union nuts Reclaim and recharge refrigerant Reclaim and recharge with correct amount of refrigerant Excess refrigerant YES NO YES NO Replace...

Page 66: ...outdoor unit PCB Amplification IC defect Diode defect Defect in microcontroller Replace the outdoor unit PCB Is compressor vibration even NO Quite a lot of vibration at start operation YES Excessive amount of refrigerant Check the compressor winding resistance Turn off the power and disconnect the harnesses U V and W Measure the winding resistance between U V V W and W U YES Is there no change eve...

Page 67: ...rocedure 14 1 1 To Remove Cabinet Bottom Plate 1 Unscrew 14 screws on the cabinet bottom plate 10 screws on the cabinet top plate and detach cabinet bottom plate and cabinet top plate from unit Remove 14 Screw Cabinet top plate Cabinet bottom plate Remove 10 Screw 14 1 2 To Remove Electronic Controller 1 Unscrew the 2 screws on the Control Board and open the Control Board Cover Remove Screw 2 Deta...

Page 68: ...s 3 Unscrew the 2 screws on the Fan Motor Bracket and detach Fan Motor Bracket 4 Remove the Fan Motor and Blower Fan from the unit 5 Use a 3 0 mm hexagonal wrench to loosen the bolts connecting the Fan Motor and Fan Detach the shaft connecting the Fan Motor and Blower Fan Remove Screw Remove Bolts 14 1 4 To Remove the Drain Motor 1 Unscrew the 1 screw on the Side Plate and remove Drain Pan from th...

Page 69: ...orator from the unit Remove Screw Remove Sensor 3 Unscrew 4 screws 1 nut and 1 Spring Clip on the Drain Motor Bracket and remove Drain Motor from unit Remove Nut Spring Clip Remove Screw 4 Unscrew 3 screws on the Drain Motor and detach the Drain Motor from Drain Motor Bracket Remove Screw ...

Page 70: ... 1 6 1 880 0 0 9 3 9 1 8 3 19 1 6 6 26 3 5 1 Fan Performance Curve Airflow m3 min 0 0 5 0 4 0 6 0 7 0 8 0 9 0 10 0 11 0 12 0 13 0 14 0 15 0 16 0 17 0 18 0 5 0 10 0 15 0 20 0 25 0 30 0 35 0 40 0 45 0 50 0 55 0 60 0 65 0 70 0 75 0 Static Pressure Pa Static Pressure VS Airflow 1500 1300 1110 940 880 Rated Static Pressure RPM Static Pressure Airflow m3 min Hi Fan Standard 1300 25 Pa 13 2 SHi Fan Hi St...

Page 71: ...9 1 8 3 19 1 6 6 26 3 5 1 Fan Performance Curve Airflow m3 min 0 0 5 0 4 0 6 0 7 0 8 0 9 0 10 0 11 0 12 0 13 0 14 0 15 0 16 0 17 0 18 0 5 0 10 0 15 0 20 0 25 0 30 0 35 0 40 0 45 0 50 0 55 0 60 0 65 0 70 0 75 0 Static Pressure Pa Static Pressure VS Airflow 1550 1300 1120 940 880 Rated Static Pressure RPM Static Pressure Airflow m3 min Hi Fan Standard 1300 25 Pa 13 2 SHi Fan Hi Static P selected 155...

Page 72: ... 9 8 20 0 7 9 Fan Performance Curve Airflow m3 min 0 0 7 0 6 0 8 0 9 0 10 0 11 0 12 0 13 0 14 0 15 0 16 0 17 0 18 0 19 0 20 0 5 0 10 0 15 0 20 0 25 0 30 0 35 0 40 0 45 0 50 0 55 0 60 0 65 0 70 0 75 0 80 0 85 0 90 0 Static Pressure Pa Static Pressure VS Airflow 1650 1480 1230 980 920 Rated Static Pressure RPM Static Pressure Airflow m3 min Hi Fan Standard 1480 25 Pa 15 3 SHi Fan Hi Static P selecte...

Page 73: ... 9 8 20 0 7 9 Fan Performance Curve Airflow m3 min 0 0 7 0 6 0 8 0 9 0 10 0 11 0 12 0 13 0 14 0 15 0 16 0 17 0 18 0 19 0 20 0 5 0 10 0 15 0 20 0 25 0 30 0 35 0 40 0 45 0 50 0 55 0 60 0 65 0 70 0 75 0 80 0 85 0 90 0 Static Pressure Pa Static Pressure VS Airflow 1650 1480 1230 980 920 Rated Static Pressure RPM Static Pressure Airflow m3 min Hi Fan Standard 1480 25 Pa 15 3 SHi Fan Hi Static P selecte...

Page 74: ... O I I I I I I I 17 ABS 5 38 A I R C O N D I T I O N E R O FF O N O N O FF S E T C A N C E L 1 2 3 T I M E R M O D E TEM P P O W E R FU L Q U I E T FA N SP E E D C L O C K S E T C H E C K R ES E T A C R C M O D E 39 49 41 46 I I 47 I I Note The above exploded view is for the purpose of parts disassembly and replacement The non numbered parts are not kept as standard service parts ...

Page 75: ...1 CWT251031 22 HOLDER SENSOR 2 CWH32143 23 SENSOR COMPLETE 1 ACXA50C00030 O 24 BLOWER WHEEL ASS Y 2 CWH01K1041 25 FAN MOTOR 1 L6CBYYYL0179 O 26 FAN MOTOR BRACKET 2 CWD541265 27 SCREW FAN MOTOR BRACKET 2 CWH551049J 28 AIR GUIDER B W 2 CWD321112 29 AIR GUIDER B W 2 CWD321113 30 DRAIN PAN COMPLETE 1 CWH40C1134 31 CONTROL BOARD A SSY 1 CWH10K1262 32 ELECTRONIC CONTROLLER MAIN 1 ACXA73C11550 ACXA73C115...

Page 76: ...CS MS9SD3H CS MS12SD3H REMARK 48 ACCESSORY COMPLETE FLEXIBLE PIPE FOAM 1 CWH82C2111 49 ACCESSORY COMPLETE SCREW 1 CWH82C234 Note All parts are supplied from PAPAMY Malaysia Vendor Code 00029488 O marked parts are recommended to be kept in stock ...

Page 77: ... 1 CWT251031 CWT251032 22 HOLDER SENSOR 2 CWH32143 23 SENSOR COMPLETE 1 ACXA50C00030 O 24 BLOWER WHEEL ASS Y 2 CWH01K1041 25 FAN MOTOR 1 L6CBYYYL0179 O 26 FAN MOTOR BRACKET 2 CWD541265 27 SCREW FAN MOTOR BRACKET 2 CWH551049J 28 AIR GUIDER B W 2 CWD321112 29 AIR GUIDER B W 2 CWD321113 30 DRAIN PAN COMPLETE 1 CWH40C1134 31 CONTROL BOARD A SSY 1 CWH10K1262 32 ELECTRONIC CONTROLLER MAIN 1 ACXA73C11570...

Page 78: ...4SD3H REMARK 48 ACCESSORY COMPLETE FLEXIBLE PIPE FOAM 1 CWH82C2111 49 ACCESSORY COMPLETE SCREW 1 CWH82C234 Note All parts are supplied from PAPAMY Malaysia Vendor Code 00029488 O marked parts are recommended to be kept in stock PAPAMY Printed in Malaysia SW1116 0 ...

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