Panasonic CS-E12RB4UW Service Manual Download Page 82

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15.4.22 F97 (Compressor Overheating)

Malfunction Decision Conditions



During operation of cooling and heating, when compressor tank temperature data (112°C (233.6°F)) is detected

by the compressor tank temperature sensor.

Malfunction Caused



Faulty compressor tank temperature sensor



2/3 way valve closed



Refrigerant

shortage

(refrigerant leakage)



Faulty outdoor unit PCB



Faulty

compressor

Troubleshooting

When F97 indication happens.

For safety reason and to prevent component
breakdown, always switch off the power
before remove and connect the component.

Replace the compressor tank.
temperature sensor.

Repair the pipe flare or union nuts.
Reclaim and recharge refrigerant.

Open the 2/3 way valve.

Replace expansion valve and/or strainer.
Reclaim and recharge refrigerant.

Procedure complete.

Check the compressor tank temperature
sensor.

Does it conform to the sensor characteristic
chart?

2/3 way valve closed?

Check for gas leakage.

Oil oozing out from the 2/3 way valve?

Check if expansion valve or strainer
clogged (ice formed).

Reclaim and recharge for a specified
amount of fresh refrigerant.

Refrigerant cycle abnormality error again?

YES

Replace outdoor unit PCB.
Replace outdoor unit compressor.

Caution

Summary of Contents for CS-E12RB4UW

Page 1: ... service information is designed for experienced repair technicians only and is not designed for use by the general public It does not contain warnings or cautions to advise non technical individuals of potential 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...

Page 2: ...ation Panel 45 12 11 Drain Pump Control Operation 45 13 Protection Control 46 13 1 Protection Control For All Operations 46 13 2 Protection Control For Cooling Soft Dry Operation 48 13 3 Protection Control For Heating Operation 49 14 Servicing Mode 51 14 1 Auto OFF ON Button 51 14 2 Cooling Only Operation Single connection Only Multi connection please refer to Multi outdoor manual 52 14 3 Remote C...

Page 3: ...it may cause electrical shock and fire in case equipment breakdown or insulation breakdown 10 Do not use joint cable for indoor outdoor connection cable Use the specified Indoor Outdoor connection cable refer to installation instruction CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for indoor outdoor connection Clamp the cable so that no external force will be acted on the terminal If c...

Page 4: ...ause injury 5 Select an installation location which is easy for maintenance 6 Pb free solder has a higher melting point than standard solder typically the melting point is 50 F 70 F 30 C 40 C higher Please use a high temperature solder iron In case of the soldering iron with temperature control please set it to 700 20 F 370 10 C Pb free solder will tend to splash when heated too high about 1100 F ...

Page 5: ...ndoor Noise H L QLo dB A 34 28 25 34 28 25 Power Level dB 50 50 Outdoor Noise H L QLo dB A 51 51 Power Level dB 66 66 Heating Capacity kW 1 20 3 99 4 77 1 20 3 99 4 77 BTU h 4100 13600 16300 4100 13600 16300 kcal h Frig h Running Current A 6 9 6 1 Input Power W 230 1 36k 1 71k 230 1 36k 1 71k COP W W 5 22 2 93 2 79 5 22 2 93 2 79 BTU hW 17 80 10 00 9 50 17 80 10 00 9 50 kcal hW Power Factor 95 97 ...

Page 6: ...in ft 3 min 6 7 240 Heat m 3 min ft 3 min 7 7 270 Lo Cool m 3 min ft 3 min 7 3 260 Heat m 3 min ft 3 min 8 5 300 Me Cool m 3 min ft 3 min 8 8 310 Heat m 3 min ft 3 min 9 8 350 Hi Cool m 3 min ft 3 min 10 5 370 Heat m 3 min ft 3 min 11 1 390 SHi Cool m 3 min ft 3 min 11 2 400 Heat m 3 min ft 3 min 11 6 410 Outdoor Airflow Hi Cool m 3 min ft 3 min 31 0 1095 31 0 1095 Heat m 3 min ft 3 min 31 0 1095 ...

Page 7: ...Material Type Power Supply Outdoor Power Supply Cord A Nil Thermostat Electronic Control Protection Device Electronic Control Dry Bulb Wet Bulb Indoor Operation Range Cooling Maximum F C 89 6 32 73 4 23 Minimum F C 60 8 16 51 8 11 Heating Maximum F C 86 0 30 Minimum F C 60 8 16 Outdoor Operation Range Cooling Maximum F C 114 8 46 78 8 26 Minimum F C 0 17 8 Heating Maximum F C 75 2 24 64 4 18 Minim...

Page 8: ...e H L QLo dB A 44 30 27 44 30 27 Power Level dB 60 60 Outdoor Noise H L QLo dB A 51 51 Power Level dB 65 65 Heating Capacity kW 1 29 5 97 6 15 1 29 5 97 6 15 BTU h 4400 20400 21000 4400 20400 21000 kcal h Frig h Running Current A 12 5 10 7 Input Power W 270 2 34k 2 50k 270 2 34k 2 50k COP W W 4 78 2 55 2 46 4 78 2 55 2 46 BTU hW 16 25 8 70 8 40 16 25 8 70 8 40 kcal hW Power Factor 90 95 Indoor Noi...

Page 9: ...n ft 3 min 7 1 250 Heat m 3 min ft 3 min 8 3 290 Lo Cool m 3 min ft 3 min 7 6 270 Heat m 3 min ft 3 min 8 7 310 Me Cool m 3 min ft 3 min 10 1 355 Heat m 3 min ft 3 min 11 3 400 Hi Cool m 3 min ft 3 min 12 8 450 Heat m 3 min ft 3 min 14 0 495 SHi Cool m 3 min ft 3 min 13 6 480 Heat m 3 min ft 3 min 14 8 520 Outdoor Airflow Hi Cool m 3 min ft 3 min 54 5 1925 54 5 1925 Heat m 3 min ft 3 min 54 5 1925...

Page 10: ...ter Material Type Power Supply Outdoor Power Supply Cord A Nil Thermostat Electronic Control Protection Device Electronic Control Dry Bulb Wet Bulb Indoor Operation Range Cooling Maximum F C 89 6 32 73 4 23 Minimum F C 60 8 16 51 8 11 Heating Maximum F C 86 0 30 Minimum F C 60 8 16 Outdoor Operation Range Cooling Maximum F C 114 8 46 78 8 26 Minimum F C 0 17 8 Heating Maximum F C 75 2 24 64 4 18 M...

Page 11: ...rs 100 0 ft Easy to use remote control Quality Improvement o Random auto restart after power failure for safety restart operation o Gas leakage protection o Prevent compressor reverse cycle o Inner protector to protect compressor o Noise prevention during soft dry operation o Blue coated condenser for high resistance to corrosion Operation Improvement o Quiet mode to reduce the indoor unit operati...

Page 12: ...uto OFF ON button Airflow direction louver Air filter Intake grille Air inlet rear Air outlet Air inlet side MODE POWERFUL QUIET TEMP OFF ON TIMER SET CANCEL ON OFF 1 2 3 AIR SWING FAN SPEED SET CHECK CLOCK RESET AC RC FAN SPEED AIR SWING AUTO HEAT COOL DRY FAN TEMP OFF ON TIMER SET CANCEL ON OFF 1 2 3 CHECK LCD display Operation mode Powerful Quiet operation OFF ON Fan speed selection Temperature...

Page 13: ...D A IR S W IN G A U T O H E A T C O O L D R Y FA N TEMP OFF ON TIM ER SET CAN CEL O N O FF 1 2 3 CH E C K 190 7 31 64 60 2 23 64 60 2 23 64 60 2 23 64 60 2 23 64 Gas piping Liquid piping Drain pipe 142 5 19 32 100 3 15 16 151 5 15 16 700 27 9 16 700 27 9 16 25 63 64 260 10 1 4 73 2 7 8 44 1 47 64 530 20 55 64 Hanging bolt 650 25 19 32 Ceiling opening 530 20 55 64 Hanging bolt 650 25 19 32 Ceiling ...

Page 14: ...re Space necessary for installation Anchor Bolt Pitch 320 12 5 8 x 570 22 1 2 100 cm 39 3 8 10 cm 3 7 8 10 cm 3 7 8 Space necessary for installation Anchor Bolt Pitch 360 5 14 3 16 x 613 24 9 64 100 cm 39 3 8 10 cm 3 7 8 10 cm 3 7 8 27 5 1 5 64 613 24 1 8 131 5 5 32 70 2 3 4 38 1 1 2 82 3 7 32 152 5 31 32 360 5 14 3 16 875 34 15 32 131 5 5 32 Top View 795 31 5 16 59 2 5 16 320 12 5 8 Side View Sid...

Page 15: ...ENSOR 1 PIPE INLET TEMP SENSOR 2 AIR TEMP SENSOR PIPE TEMP SENSOR LIQUID SIDE 2 WAY VALVE 3 WAY VALVE GAS SIDE COOLING HEAT EXCHANGER EVAPORATOR HEAT EXCHANGER CONDENSER HEATING COMPRESSOR 4 WAY VALVE MUFFLER HEATER COMPRESSOR TEMP SENSOR STRAINER EXPANSION VALVE MUFFLER RECEIVER ...

Page 16: ...AIN PUMP FAN MOTOR OUTDOOR UNIT INDOOR UNIT 1 2 3 COMPRESSOR NOISE FILTER MS 3 M Q1 FUSE103 FAN MOTOR RY C C101 4 WAYS VALVE SC EXPANSION VALVE REACTOR PTC PTC PTC1 PTC2 RY AC1 RY PWR NTC TH2 FUSE102 CT102 FUSE101 SINGLE PHASE POWER SUPPLY U RY HT2 HEATER M ...

Page 17: ...OOR UNIT FUSE SC DRAIN PUMP FAN MOTOR INDOOR UNIT SINGLE PHASE POWER SUPPLY L 1 2 3 N MS 3 U P FUSE1 DB3 Q1 RY C 4 WAYS VALVE RY HOT CR3 DB1 N V W M HEATER TH1 NTC SC DB2 FUSE2 PTC2 CT400 REACTOR TH2 NTC PTC1 RY PWR1 FUSE 3 NOISE FILTER ...

Page 18: ...NTROLLER SW02 SW01 HIGH STATIC PRESSURE FAN AUTO SW REMARKS B BLUE P PINK BR BROWN O ORANGE BL BLACK Y YELLOW W WHITE GR GRAY R RED G GREEN Y G YELLOW GREEN 1 3 1 10 1 4 CN TH1 WHT CN DISP WHT CN TH2 BLU 1 4 MOTOR FLOAT SWITCH INTAKE AIR TEMPERATURE SENSOR CN STM1 WHT 5 1 CN T2 YLW CN T1 WHT 1 2 2 1 T BLK1 T BLK2 CN DRMTR1 BLU TERMINAL BOARD BL BL Y Y R R BR R O Y P BL BL P P BL BL BL BL BL BL BR ...

Page 19: ... 2 WHITE 1 BLACK 3 RED RED WHT GRN GRN FUSE101 20A 250V FUSE102 T3 15A L250V BLK BLK WHT DATA RED AC BLK BLK AC WHT WHT FG1 GRN LJP101 GRN HT2 ORG CN DCFM WHT HT2 ORG ACL BRW HEATER ELECTRONIC CONTROLLER ELECTRONIC CONTROLLER ORG ORG RY HT2 BRW ACL BRW CN HT1 CN HT2 CN4 CN5 5 1 5 1 4 1 7 FAN MOTOR M REMARKS BLACK BLK BLUE BLU WHITE WHT RED RED YELLOW YLW GRAY GRY GREEN GRN BROWN BRW ORANGE ORG YEL...

Page 20: ... WHT RED GRY GRY BLK L2 O BLACK PFC CIRCUIT THE PARENTHESIZED LETTERS IS INDICATED ON TERMINAL COVER BLUE BLU RED RED YELLOW YLW TRADEMARK COMP TERMINAL ELECTRONIC CONTROLLER MAIN L2 1 GRAY 1 1 2 2 BLK REACTOR BLK BLK Q10 P N W U RED U RED BLU BLU YLW YLW YLW BLU FAN MOTOR RED RED HEATER OUTDOOR AIR TEMP SENSOR THERMISTOR PIPING TEMP SENSOR THERMISTOR ELECTRO MAGNETIC COIL 4 WAY VALVE CN HT BLACK ...

Page 21: ...PE TEMPERATURE SENSOR 1 20k 3950 P O Y R BR 1 5 CN STM2 YLW MOTOR CN CNT WHT 5 1 10 1 CN DISP WHT M 5 1 M 1 5 DRAIN PUMP TEST RUN 3 C04 1 C43 R75 5V R31 20 0k R55 10k R56 10k R57 1k R54 1k R33 15 0k C29 1000p 5V 5V 5V C31 0 01 C05 1 12V 12V 12V 12V IC05 IC07 7 6 5 4 3 2 1 7 6 5 4 3 2 1 10 11 12 13 14 15 16 10 11 12 13 14 15 16 8 9 8 9 12V SSR01 SSR02 5V C30 R13 BZ 5V R203 10k IC201 Vout 1 R202 47 ...

Page 22: ...COMMUNICATION CIRCUIT PFC CIRCUIT RECTIFICATION CIRCUIT RECTIFICATION CIRCUIT SWITCHING POWER SUPPLY CIRCUIT TERMINAL BOARD L1 YLW GRN L2 2 WHITE 1 BLACK 3 RED RED WHT GRN GRN FUSE101 20A 250V FUSE102 T3 15A L250V BLK BLK WHT DATA RED AC BLK BLK AC WHT WHT FG1 GRN LJP101 GRN HT2 ORG CN DCFM WHT HT2 ORG ACL BRW HEATER ELECTRONIC CONTROLLER ELECTRONIC CONTROLLER ORG ORG RY HT2 BRW ACL BRW CN HT1 CN ...

Page 23: ...R THERMISTOR 4 96K 3800 ELECTRO MAGNETIC COIL 4 WAY VALVE CN HT BLACK CN FM WHITE RY HT BLK WHT COMPRESSOR MS 3 3 3 1 1 4 7 1 1 1 3 4 CN TH1 WHITE CN HOT BLUE RY HOT 3 1 BLUE V YELLOW W V WHT BLK 1 6 CN EV WHITE M ELECTRO MAGNETIC COIL EXPANSION VALVE COMP TEMP SENSOR THERMISTOR 50K 3950 1 3 CN TANK WHITE t t t CN COM YELLOW CN COM YELLOW 1 4 4 WHT WHT WHT WHT 1 M 5V R101 15 8k R100 15 8k C46 1µ C...

Page 24: ... 10 Printed Circuit Board 10 1 Indoor Unit 10 1 1 Main Printed Circuit Board CN STM2 CN STM1 CN FM T BLK1 CN DRMTR1 T BLK2 CN T2 CN T1 CN CNT CN TH2 JP3 Random Auto Restart enable disable CN TH1 SW01 SW02 ...

Page 25: ...25 10 1 2 Display Printed Circuit Board CN DISP ...

Page 26: ...26 10 2 Outdoor Unit 10 2 1 Main Printed Circuit Board 10 2 1 1 CU E12RB4U CN DCFM FG1 CN STM CN4 CN5 CN TANK CN TH CN HOT CURRENT TRANSFORMER CT DATA AC WHT AC BLK POWER TRANSISTOR IPM ...

Page 27: ...27 10 2 1 2 CU E18RB4U POWER TRANSISTOR IPM CN COM CURRENT TRANSFORMER CT AC BLK CN HT CN HOT CN ACFM CN TANK CN TH1 CN EV AC WHT ...

Page 28: ...28 10 2 2 Noise Filter Printed Circuit Board 10 2 2 1 CU E18RB4U CN COM CN BLK CN WHT FG1 COM3 ACL1 ACN1 ...

Page 29: ...ppressor 11 Do not install the indoor unit in a laundry Electric shocks may result Note Thoroughly study the following installation locations 1 In such places as restaurants and kitchens considerable amount of oil steam and flour adhere to the turbo fan the fin of the heat exchanger and the drain pump resulting in heat exchange reduction spraying dispersing of water drops drain pump malfunction et...

Page 30: ... air to blow off dust in the pipe before connection 4 Form the piping according to its routing Avoid bending and bending back the same piping point more than three times This will result in hardening of the pipe 5 After deforming the pipe align centers of the union fitting of the indoor unit and the piping and tighten them firmly with wrenches 6 Connect pipe to the service valve or ball valve whic...

Page 31: ...sound The height of drain may be possible up to 29 1 2 750 mm When drain set piping install as shown in the figure below Drain Test The air conditioner uses a drain up motor to drain water Use the following procedure to test the drain up motor operation Connect the main drain pipe to exterior and leave it provisionally until the test comes to an end Feed water to the flexible drain hose and check ...

Page 32: ... insulation thickness more than 5 16 8 mm for refrigerant piping gas piping thick piping and drain piping add a further of 3 8 10 mm to 1 3 16 30 mm thickness material Wall seal When the outdoor unit is installed on a higher position than the indoor unit install the trap so as not to instill rain water into the wall by transmitting in piping Stuff the space among piping the electric wire and the d...

Page 33: ...let grille by moving the catchers to center WARNING RISK OF FIRE JOINING OF WIRES MAY CAUSE OVERHEATING AND FIRE Wire stripping 7 32 5 mm or more Conductor over inserted No loose strand when inserted Indoor outdoor connection terminal board 13 32 1 16 10 1 mm WIRESTRIPPING CONNECTING REQUIREMENT Conductor fully inserted Conductor not fully inserted gap between wires ACCEPT PROHIBITED PROHIBITED WA...

Page 34: ...ceiling wall and decorative panel 4 Open the indoor control box cover by removing 2 pcs of screw 5 Insert firmly the connector of cosmetic louver to indoor pcb CN STM1 CN STM2 and CN DISP Be caution not to clamp the cord in between control board and control board cover 6 After complete install back removed part follow opposite procedure Be sure to hook the air inlet grill string to prevent grill f...

Page 35: ...C D E12 22 7 16 570 mm 4 1 8 105 mm 23 32 18 5 mm 12 19 32 320 mm E18 24 1 8 613 mm 5 5 32 131 mm 5 8 16 mm 14 3 16 360 5 mm Model Capacity Btu h Piping size Std Length Max Elevation Min Piping Length Max Piping Length Additional Refrigerant Piping Length for add gas Gas Liquid E12 11900 1 2 12 7mm 1 4 6 35mm 24 6 ft 7 5 m 49 2 ft 15 m 9 8 ft 3 m 65 6 ft 20 m 0 2 oz ft 20 g m 24 6 ft 7 5 m E18 175...

Page 36: ...onto the copper pipe Align center of piping to valve and then tighten with torque wrench to the specified torque as stated in the table 11 2 3 3 Connecting the Piping to Outdoor Multi Decide piping length and then cut by using pipe cutter Remove burrs from cut edge Make flare after inserting the flare nut locate at valve onto the copper pipe Align center of piping to valve and then tighten with to...

Page 37: ...nstallation Be careful with the liquid refrigerant it may cause frostbite 11 2 5 Connect the Cable to the Outdoor Unit 1 Remove control board cover Plastic and Metal follow by particular plate for E18 model 2 Remove top panel follow by Control Board Cover Plastic and Metal for E12 model 3 Remove plugs 4 Fix the conduit connectors to the knockout holes with lock nuts then secure them against the si...

Page 38: ...wireshallbeYellow Green Y G incolourandlonger than other lead wires for electrical safety in case of the slipping Holder Power supply cord Indoor outdoor connection cable Terminal Board Ground wire longer than other AC wires for safety reasons Ground wire longer than other AC wires for safety reasons Terminal Board Holder Control Board Metal Cover Top Panel Connecting Wires Lock Nuts Knockout Hole...

Page 39: ... Switch Operation The following operations can be performed by pressing the AUTO switch 1 AUTO OPERATION MODE The Auto operation will be activated immediately once the Auto Switch is pressed 2 TEST RUN OPERATION FOR PUMP DOWN SERVICING PURPOSE The Test Run operation will be activated if the Auto Switch is pressed continuously for more than 5 sec to below 8 sec A pep sound will occur at the fifth s...

Page 40: ...tat control Compressor is OFF when Intake Air Temperature Internal Setting Temperature 1 5 C 2 7 F continue for 3 minutes When compressor is OFF Thermostat OFF and AUTO FAN is set the fan will stop periodically Compressor is ON after waiting for 3 minutes if the Intake Air Temperature Internal Setting Temperature Compressor OFF point 12 1 3 Soft Dry Operation 12 1 3 1 Thermostat control Compressor...

Page 41: ...DRY mode then continue in DRY mode otherwise COOL mode is decided o If 2 5 C 4 5 F indoor intake temperature remote control setting temperature 4 C 7 2 F maintain with previous mode o If indoor intake temperature remote control setting temperature 2 5 C 4 5 F HEAT mode is decided 12 1 6 Fan Operation Fan operation is used to circulate air in the room During operation indoor fan run continuously bu...

Page 42: ...arted feedback control is performed once every second During fan motor on if fan motor feedback 2550 rpm or 50 rpm continue for 10 seconds then fan motor error counter increase fan motor is then stop and restart If the fan motor counter becomes 7 times then H19 fan motor error is detected Operation stops and cannot on back 12 3 Outdoor Fan Motor Operation It starts when compressor starts operation...

Page 43: ... are as Figure 2 below When the air conditioner is stopped using remote control the vane will shift to close position 12 5 Quiet Operation Cooling Mode Cooling Area of Dry Mode Purpose o To provide quiet cooling operation compare to normal operation Control condition o Quiet operation start condition When POWERFUL QUIET button at remote control is pressed twice POWERFUL QUIET LED illuminates o Qui...

Page 44: ...ed the internal setting temperature will shift lower up to 2 C 3 6 F for Cooling Soft Dry or higher up to 3 5 C 6 3 F for Heating than remote control setting temperature for 20 minutes to achieve the setting temperature quickly 12 8 Timer Control There are 2 sets of ON and OFF timer available to turn the unit ON or OFF at different preset time If more than one timer had been set the upcoming timer...

Page 45: ...OFF Timer Setting OFF POWERFUL Mode OFF QUIET Mode OFF AIR SWING OFF Note If POWER LED is blinking the possible operation of the unit are Hot Start during Deice operation operation mode judgment or ON timer sampling If Timer LED is blinking there is an abnormality operation occurs 12 11 Drain Pump Control Operation Drain pump control This unit has built in with drain pump Control content During CO...

Page 46: ... 10 11 43 Cooling Soft Dry C 6 10 10 05 Heating 6 98 13 18 4 The first 30 minutes of cooling operation A will be applied 13 1 3 IPM Power transistor Prevention Control Overheating Prevention Control 1 When the IPM temperature rises to 120 C 248 F compressor operation will stop immediately 2 Compressor operation restarts after 3 minutes the temperature decreases to 110 C 230 F 3 If this condition r...

Page 47: ...s under 5 C 9 F Control contents o Compressor stops and restart after 3 minutes o If the conditions above happen 2 times within 20 minutes the unit will Stop operation Timer LED blinks and F91 indicated 13 1 6 Low Frequency Protection Control 1 When the compressor operate at frequency lower than 24 Hz continued for 20 minutes the operation frequency will be changed to 23 Hz for 2 minutes 13 1 7 Lo...

Page 48: ...e Prevention Control 1 When indoor heat exchanger temperature is lower than 0 C 32 F continuously for 6 minutes compressor will stop operating Compressor will resume its operation after stop for 3 minutes and the indoor heat exchanger is higher than 5 C 41 F At the same time indoor fan speed will be higher than during its normal operation If indoor heat exchanger temperature is higher than 13 C 55...

Page 49: ... operation this control is not applicable o Control content Depends on compressor conditions 1 Compressor OFF Compressor ON The indoor unit fan stops temporarily and then starts to blow at minimum airflow for 30 seconds 2 Compressor ON Compressor OFF The indoor unit fan stops for 90 seconds and then blows at minimum airflow for 20 seconds 13 3 Protection Control For Heating Operation 13 3 1 Intake...

Page 50: ... cold draught operation starts where indoor fan speed will be reduced 13 3 6 Deice Operation When outdoor pipe temperature and outdoor air temperature is low deice operation start where indoor fan motor and outdoor fan motor stop and operation LED blinks 13 3 7 Pump down Operation by CN S A convenience method to activate pump down operation Control start condition o During power standby condition ...

Page 51: ...sired transmission code to the EEPROM There are 4 types of remote control transmission code could be selected and stored in EEPROM of indoor unit The indoor unit will only operate when received signal with same transmission code from remote control This could prevent signal interference when there are 2 or more indoor units installed nearby together To change remote control transmission code short...

Page 52: ...ation mode base on remote controller temperature setting and Indoor Intake Sensor New Auto Mode or Outdoor Intake Sensor Old Auto Mode HEAT The unit will stop and Power LED blinking The unit will run Heating operation COOL The unit will run Cooling operation The unit will run Cooling operation DRY The unit will run DRY operation The unit will run Dry operation Force Heating The unit will run Force...

Page 53: ...ransmission code changed 14 3 2 RESET RC To clear and restore the remote control setting to factory default o Press once to clear the memory 14 3 3 RESET AC To restore the unit s setting to factory default o Press once to restore the unit s setting 14 3 4 TIMER To change indoor unit indicator s LED intensity o Press continuously for 5 seconds 14 3 5 TIMER To change remote control display from Degr...

Page 54: ...ivated by short circuiting CN S Pin 1 and 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 CU E12RB4U CN DCFM FG1 CN STM CN S CN4 CN5 CN TANK CN TH CN HOT CURRENT TRANSFORMER CT DATA AC WHT AC BLK POWER TRANSISTOR IPM ...

Page 55: ...55 CU E18RB4U POWER TRANSISTOR IPM CN COM CN S CURRENT TRANSFORMER CT AC BLK CN HT CN HOT CN ACFM CN TANK CN TH1 CN EV AC WHT ...

Page 56: ...urrent during operation Measuring gas side pressure Excessive amount of refrigerant Inefficient compressor Insufficient refrigerant Insufficient refrigerant Inefficient compressor Clogged strainer or expansion valve Clogged strainer or capillary tube Less than 8 C 14 4 F at the cooling mode Less than 14 C 25 2 F at the cooling mode More than 8 C 14 4 F 15 minutes after an operation is started at c...

Page 57: ...e Electric current during operation Low 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 58: ...controller continuously for 5 seconds 3 will be displayed on the remote controller display Note Display only for No transmitting signal no receiving sound and no Power LED blinking 4 Press the TIMER or button on the remote controller The code H00 no abnormality will be displayed and signal will be transmitted to the main unit The power LED lights up If no abnormality is stored in the memory three ...

Page 59: ...t Indoor heat exchanger temperature sensor 2 lead wire and connector H27 Outdoor air temperature sensor abnormality Continuous for 5s Outdoor air temperature sensor open or short circuit Outdoor air temperature sensor lead wire and connector H28 Outdoor heat exchanger temperature sensor 1 abnormality Continuous for 5s Outdoor heat exchanger temperature sensor 1 open or short circuit Outdoor heat e...

Page 60: ...happen within 30 minutes Power transistor module overheat PCB faulty Outdoor air circuit fan motor F97 Compressor overheating protection 3 times happen within 30 minutes Compressor overheat Insufficient refrigerant F98 Total running current protection 3 times happen within 20 minutes Total current protection Check refrigeration system Power source or compressor lock F99 Outdoor direct current DC p...

Page 61: ...230 240V AC power supply abnormal fluctuation NO Defect in communication circuitry of outdoor unit PCB Replace the PCB Improper connection at terminals indoor outdoor Check indoor outdoor connecting cable Measure the DC voltage at terminal 2 3 communication terminals of outdoor unit terminal board Is the measured DC voltage fluctuate between 10 70V NO Improper connection at terminals indoor outdoo...

Page 62: ... indoor and outdoor units Troubleshooting When abnormality indication starts again Is there any wiring error YES Matched compatibility Correct the indoor outdoor units 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 i...

Page 63: ...y reason and to prevent component breakdown always switch off the power before remove and connect the component Is the measured resistance of the indoor intake air temperature sensor matches the value specified in its characteristic chart Defect in indoor intake air temperature sensor Replace the indoor intake air temperature sensor Defect in indoor unit PCB Replace the indoor unit PCB Check the c...

Page 64: ...or unit PCB Measure the resistance of the outdoor compressor temperature sensor For safety reason and to prevent component breakdown always switch off the power before remove and connect the component Is the measured resistance of the outdoor compressor temperature sensor matches the value specified in its characteristic chart Defect in outdoor compressor temperature sensor Replace the outdoor com...

Page 65: ...cal Graph for Temp vs Current and Pressure In forced cooling check suction pressure versus running current Running current and suction pressure is very low Compressor Lack Compression Replace Compressor Check replace defected CT Running current is much too low and suction pressure is much too high Suction pressure and running current is normal Check for gas leaking source Repair or replace defecte...

Page 66: ...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 For safety reason and to prevent component breakdown always switch off the power before remove and connect the component Turn off power supply and disconnect fan motor connector then turn power on NO YES YES NO Does it rotate Stop fan motor Ch...

Page 67: ...place the outdoor unit PCB Defect in outdoor intake air temperature sensor Replace the outdoor intake air temperature sensor NO NO YES YES Check the connector connection Plug out connector from the indoor unit PCB Is the connector connection normal Measure the resistance of the indoor pipe temperature sensor Check the outdoor air temperature sensor Is the measured resistance of the outdoor intake ...

Page 68: ...Replace the outdoor unit PCB Defect in outdoor intake air temperature sensor Replace the outdoor intake air temperature sensor NO NO YES YES Check the connector connection Plug out connector from the indoor unit PCB Is the connector connection normal Measure the resistance of the indoor pipe temperature sensor Check the outdoor air temperature sensor Is the measured resistance of the outdoor intak...

Page 69: ...ty indication starts again For safety reason and to prevent component breakdown always switch off the power before remove and connect the component Turn off the power Check the connector connection Defect in outdoor air temperature sensor Replace the outdoor air temperature sensor Defect in outdoor unit PCB Replace the outdoor unit PCB NO NO YES YES Check the outdoor air temperature sensor Plug ou...

Page 70: ...nd to prevent component breakdown always switch off the power before remove and connect the component No No YES YES Check the outdoor heat exchanger temperature sensor Plug out connector from the outdoor unit PCB Measure the resistance of the outdoor heat exchanger temperature sensor Check the connector connection Turn off the power Check the connector connection Connector poor contact Correct the...

Page 71: ... remove and connect the component Is the measured resistance of the outdoor discharge pipe temperature sensor matches the value specified in its characteristic chart Is the connector connection normal YES YES 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 Check the connector co...

Page 72: ...e Troubleshooting When abnormality indication starts again For safety reason and to prevent component breakdown always switch off the power before remove and connect the component Match the compatible model follow specification Replace the indoor and outdoor unit PCB Change for the specified indoor or outdoor unit PCB Check indoor and outdoor units model number Check indoor and outdoor PCB part nu...

Page 73: ... safety reason and to prevent component breakdown always switch off the power before remove and connect the component Caution When abnormality indication starts again Turn off power supply and rotate fan by hand Does fan rotate smoothly Turn off power supply and disconnect CN MTR2 connector Connect inverter checker to CN MTR2 then turn power on Check the output of fan motor from outdoor PCB Is all...

Page 74: ...kdown always switch off the power before remove and connect the component Clean the air filter Is the air filter dirty Check the dust accumulation on the indoor unit heat exchanger Is the indoor unit heat exchanger dirty Is the measured resistance of the indoor pipe temperature thermistor matches the value specified in its characteristic chart Check the indoor pipe temperature thermistor Plug out ...

Page 75: ... the power before remove and connect the component Is there any short circuit YES YES YES YES YES YES YES NO NO Check the indoor unit air filter Is the air filter dirty Is the indoor unit heat exchanger dirty Check if 2 3 way valve is closed Check if indoor fan motor operates normally Check if expansion valve or strainer clogged ice formed Does it conform to the sensor characteristic chart Check t...

Page 76: ...thermistor matches the value specified in its characteristic chart The 4 way valve may have been damaged or wrongly connected between discharge and suction tube Problem occurs in heating mode only Is 4 way solenaid valve being energised Defect in indoor pipe temperature thermistor Replace the indoor pipe temperature thermistor 4 way valve not working not energize Check CN HOT connection 4 way valv...

Page 77: ...witch off the power before remove and connect the component Replace the outdoor unit PCB Defect in PFC circuitry Replace outdoor fan motor Defect in outdoor fan motor Replace compressor Defect in compressor Replace reactor Defect in reactor AC power supply abnormal surge Reset the error code and turn on the unit again Is AC power supply normal fluctuation Is the DC voltage between DCP and DCN norm...

Page 78: ...91 indication happens For safety reason and to prevent component breakdown always switch off the power before remove and connect the component Check for gas leaking source Repair or replace defected part s Re claim and then re charge the right amount YES YES NO closed NO gas amount is OK Check 3 way valve Check for gas leaking source Refer to H16 Gas leaking Check other parts in refrigeration cycl...

Page 79: ...ove and connect the component YES YES NO NO Connector poor contact Correct the connection IPM defective Replace compressor Replace outdoor unit PCB Check the U V and W connector connection Turn OFF the power Check the U V and W connector connection at outdoor PCB and compressor terminal Is the connector connection normal Disconnect the harnesses U V and W from the compressor terminal Is the blinki...

Page 80: ... the connector of outdoor heat exhanger thermistor from the PCB Measure the resistance of the outdoor heat exchanger thermistor Is there any improper heat radiation Is the outdoor fan motor operating Is the measured resistance of the outdoor heat exchanger thermistor matches the value specified in its characteristic chart Reset the error code and turn on the unit again Reinstall the outdoor unit R...

Page 81: ...IPM overheats 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 When F96 indication happens For safety reason and to prevent component breakdown always switch off the power before remove and connect the...

Page 82: ...efore remove and connect the component Replace the compressor tank temperature sensor Repair the pipe flare or union nuts Reclaim and recharge refrigerant Open the 2 3 way valve Replace expansion valve and or strainer Reclaim and recharge refrigerant Procedure complete Check the compressor tank temperature sensor Does it conform to the sensor characteristic chart 2 3 way valve closed Check for gas...

Page 83: ...ting For safety reason and to prevent component breakdown always switch off the power before remove and connect the component Replace the outdoor unit PCB Repair the pipe flare or union nuts Reclaim and recharge refrigerant Reclaim and recharge with correct amount of refrigerant Replace outdoor unit PCB Replace outdoor unit compressor When F98 indication happens Get restarted and measure the input...

Page 84: ...Replace the outdoor unit PCB Compressor defective due to mechanical locked Replace compressor Compressor defective due to winding shorted Replace compressor Amplification IC defect Diode defect Defect in microcontroller Replace the outdoor unit PCB When abonormality indication starts again Reset the error code and turn on the unit again Is there no change even if all refrigerant is discharged Are ...

Page 85: ...moving the catchers to center Fig 1 Fig 1 2 Remove the Control Board Cover by removing the screws Fig 2 Fig 2 3 Release the Fig 3 o CN STM1 WHT connector o CN STM2 YLW connector o CN DISP WHT connector o CN FM WHT connector o CN TH1 WHT connector o CN TH2 BLU connector o CN DRMTR1 BLU connector o AC01 BLK AC02 WHT and CN DRMTR2 RED from Terminal Board o G01 GRN screw o Two T BLK connectors o CN T1...

Page 86: ...e Front Grille by removing the screw A and screws B C D half way open Fig 5 Fig 5 6 Remove the Air Guider and Drain Pan complete by removing the screws Fig 6 Fig 6 7 Remove the Turbo Fan by removing the bolt Fig 7 Fig 7 Electronic Controller Hooks Screw C Screw B Front Grille Screws Drain Pan Air Guider Turbo Fan Bolt ...

Page 87: ...87 8 Remove the Fan Motor by release the Fan Motor lead wire connectors and Fan Motor screws Fig 8 Fig 8 Screws Connectors ...

Page 88: ...l Board Cover 4 Remove the Top Cover of the Control Board by 4 hooks Fig 3 5 Remove the Control Board as follows Fig 4 Fig 5 Fig 6 Screw Top Panel Screws Screws Screws Front Panel Hooks Top Cover Hooks Terminal Board Cover Screw Control Board Control Board Release 5 Connectors Release 3 Terminal Connectors and Earth Wire Screw Remove 2 Screws Release Earth Wire Screw Remove the Terminal Cover and ...

Page 89: ...the Top Cover of the Electronic Controller Fig 3 4 Remove the Control Board Fig 4 5 Remove the 8 screws of the Electronic Controller Fig 5 Caution When handling electronic controller be careful of electrostatic discharge Screws Screws Top Panel Screws Screws Screws Front Panel Top Cover Release 6 terminal connectors Control Board Release 6 connectors Release the Hooks Screws Screws Electronic Cont...

Page 90: ...6 11234 8006 1149 9218 6569 1380 20 68 0 13 3 55 94 9276 9183 348 9194 9102 797 10064 9963 1169 8257 8175 1404 15 8 60 44 10636 7480 671 11052 7657 1051 10228 7684 1158 8392 6305 1391 17 1 2 CS E18RB4UW CU E18RB4U Rated frequency compressor speed is fixed during forced heating or cooling for capacity measurement and diagnosis purpose Indoor C F Outdoor C F DB WB 17 8 0 10 14 0 32 5 41 TC SHC IP TC...

Page 91: ...5 11119 8176 1329 8510 6258 1421 17 1 4 CS E18RB4UW CU E18RB4U Maximum Capacity Indoor C F Outdoor C F DB WB 17 8 0 10 14 0 32 5 41 TC SHC IP TC SHC IP TC SHC IP TC SHC IP 27 80 6 19 0 66 20 21692 17962 1262 21668 17942 1235 21658 18278 1201 21518 17807 1192 22 0 71 60 24844 14659 1098 24813 14640 1082 23717 14360 1258 22112 13458 1251 23 73 4 15 7 60 26 19117 18926 1382 19093 18902 1368 20302 200...

Page 92: ...P TC IP TC IP TC IP 24 75 2 9103 1891 11867 2160 15151 2177 19861 2474 20737 2460 22347 2362 20 68 0 9214 1821 11903 2078 15371 2087 20400 2340 21563 2360 23237 2267 16 60 8 9050 1740 12006 1986 15536 1999 20894 2212 22141 2235 23861 2146 17 2 3 CS E12RB4UW CU E12RB4U Maximum Capacity Indoor C F Outdoor C F DB 15 5 8 3 17 06 1 7 35 06 8 3 46 94 12 53 6 23 9 75 02 TC IP TC IP TC IP TC IP TC IP TC I...

Page 93: ...12RB4UW CU E12RB4U 11 5 52 7 12 0 53 6 12 5 54 5 13 0 55 4 13 5 56 3 14 0 57 2 20 4 15 4 9 10 14 5 23 0 32 5 41 10 50 15 59 20 68 25 77 30 86 35 95 40 104 45 113 50 122 Outdoor Air Temperature C F Outlet Air C F Current A Gas Side Piping Pressure MPa PSI 208 230 3 000 3 500 4 000 4 500 5 000 5 500 6 000 6 500 7 000 7 500 0 860 124 732 0 880 127 633 0 900 130 534 0 920 133 434 0 940 136 335 0 960 1...

Page 94: ... 15 4 9 10 14 5 23 0 32 5 41 10 50 15 59 20 68 25 77 30 86 35 95 40 104 45 113 50 122 Outdoor Air Temperature C F Outlet Air C F Current A Gas Side Piping Pressure MPa PSI 208 230 9 0 48 2 9 5 49 1 10 0 50 0 10 5 50 9 11 0 51 8 11 5 52 7 12 0 53 6 12 5 54 5 13 0 55 4 13 5 56 3 14 0 57 2 14 5 58 1 15 0 59 0 15 5 59 9 5 000 5 500 6 000 6 500 7 000 7 500 8 000 8 500 9 000 9 500 0 750 108 778 0 800 11...

Page 95: ...PSI 208 230 33 0 91 4 34 0 93 2 35 0 95 0 36 0 96 8 37 0 98 6 38 0 100 4 39 0 102 2 40 0 104 0 41 0 105 8 42 0 107 6 43 0 109 4 Outdoor Air Temperature C F 15 4 9 10 14 5 23 0 32 5 41 10 50 15 59 20 68 25 77 5 000 5 200 5 400 5 600 5 800 6 000 6 200 6 400 6 600 6 800 7 000 2 000 290 075 2 100 304 579 2 200 319 083 2 300 333 586 2 400 348 090 2 500 362 594 2 600 377 098 2 700 391 601 2 800 406 105 ...

Page 96: ... 0 111 2 45 0 113 0 46 0 114 8 47 0 116 6 48 0 118 4 49 0 120 2 9 000 9 500 10 000 10 500 11 000 11 500 12 000 12 500 13 000 Outdoor Air Temperature C F 15 4 9 10 14 5 23 0 32 5 41 10 50 15 59 20 68 25 77 Outdoor Air Temperature C F 15 4 9 10 14 5 23 0 32 5 41 10 50 15 59 20 68 25 77 2 600 377 098 2 700 391 601 2 800 406 105 2 900 420 609 3 000 435 113 3 100 449 617 3 200 464 120 3 300 478 624 3 4...

Page 97: ...18 3 1 2 Heating Capacity Note The graphs show the factor after added right amount of additional refrigerant Piping length m ft Capacity correction factor 0 94 0 95 0 96 0 97 0 98 0 99 1 00 1 01 1 02 1 03 1 04 0 0 5 16 4 10 32 8 15 49 2 20 65 6 25 82 0 Capacity correction factor Piping length m ft 0 0 5 16 4 10 32 8 15 49 2 20 65 6 25 82 0 0 92 0 94 0 96 0 98 1 00 1 02 1 04 1 06 1 08 ...

Page 98: ...ter added right amount of additional refrigerant Capacity correction factor Piping length m ft 0 96 0 97 0 98 0 99 1 00 1 01 1 02 0 0 5 16 4 10 32 8 15 49 2 20 65 6 25 82 0 30 98 4 35 114 8 Capacity correction factor Piping length m ft 0 0 5 16 4 10 32 8 15 49 2 20 65 6 25 82 0 30 98 4 35 114 8 0 97 0 98 0 99 1 00 1 01 ...

Page 99: ...99 19 Exploded View and Replacement Parts List 19 1 Indoor Unit A A 35 36 37 40 38 41 18 17 16 19 23 15 25 44 42 47 39 22 24 ...

Page 100: ...xploded view is for the purpose of parts disassembly and replacement The non numbered parts are not kept as standard service parts O I I I I I 52 53 54 1 4 26 29 27 28 30 33 32 31 51 48 11 14 12 13 9 6 7 2 8 3 21 5 51A 48A ...

Page 101: ... 1 CWA50C2549 23 HOLDER SENSOR 2 CWH32143 24 EVAPORATOR SUPPORTER 3 CWD911529A 25 TUBE ASS Y CAPIL TUBE 1 CWT07K1188 26 DRAIN PUMP COMPLETE 1 CWB53C1055 O 27 PANEL DRAIN PUMP ASS Y 1 CWD93K1021 28 DRAIN PUMP 1 CWB532122 29 ANTI VIBRATION BUSHING 3 CWH501080 30 FLOAT SWITCH DRAIN PUMP 1 CWA121233 O 31 FLEXIBLE PIPE 1 CWH85C1115 32 DRAIN NOZZLE 1 CWH411011 33 DRAIN HOSE HEAT INSULATION 1 CWG321116 3...

Page 102: ... CS E18RB4UW REMARK 52 OPERATING INSTRUCTION 1 CWF569879 53 INSTALLATION INSTRUCTION 1 CWF616670 54 INSTALLATION INSTRUCTION 1 CWF616671 Note All parts are supplied from PAPAMY Malaysia Vendor Code 00029488 O marked parts are recommended to be kept in stock ...

Page 103: ...T20U Front Grille Complete 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 13 12 4 21 14 22 5 10 29 8 7 9 24 28 1 6 ...

Page 104: ... 4 CWH081007 10 BEARING 6 CWH641008 O 12 PLATE COVER FOR A S MOTOR 1 CWD911459 13 PLATE COVER FOR CONNECTING SHAFT 2 CWD911460 14 PLATE COVER FOR END SHAFT 1 CWD911461 21 ELECTRONIC CONT RECEIVER INDICATOR 1 CWA748302 22 LEAD WIRE COMPLETE 1 CWA67C5576 24 INTAKE GRILLE 1 CWE221131 28 LEVER ARM 2 CWH651029 29 AIR FILTER 1 CWD001142 O Note All parts are supplied from PAPAMY Malaysia Vendor Code 0002...

Page 105: ...ed view is for the purpose of parts disassembly and replacement The non numbered parts are not kept as standard service parts 29 61 32 28 60 27 16 17 15 34 33 25 26 19 39 38 21 20 24 9 14 11 10 50 1 4 23B 23A 2 31 8 7 52 51 53 55 54 35 30 12 5 22 3 6 59 58 57 56 ...

Page 106: ...COMP TEMP 1 CWA50C2340 O 25 CONTROL BOARD COVER TOP 1 CWH131264 26 ELECTRONIC CONTROLLER MAIN 1 CWA73C9228R O 27 TERMINAL BOARD ASSY 1 CWA28K1154 O 28 CABINET SIDE PLATE CO 1 CWE04C1226 29 SENSOR CO AIR TEMP AND PIPE TEMP 1 CWA50C2793 O 30 CABINET SIDE PLATE 1 CWE041492A 31 CABINET FRONT PLATE CO 1 CWE06C1142 32 CABINET TOP PLATE 1 CWE031018A 33 PLATE C B COVER TERMINAL 1 CWH131301 34 CONTROL BOAR...

Page 107: ...or the purpose of parts disassembly and replacement The non numbered parts are not kept as standard service parts 47 12 30 6 22 65 38 40 31 51 43 32 48 33 20 19 75 2 76 18 4 3 23 24 69 1 25 81 28 78 79 14 77 8 11 45 10 7 9 71 70 72 74 73 41 42 46 80 5 15 27 ...

Page 108: ...A50C2689 O 27 V COIL COMPLETE 4 W VALVE 1 CWA43C2392 O 28 V COIL COMPLETE EXPAND VALVE 1 CWA43C2393 O 30 SENSOR CO AIR AND PIPE TEMP 1 CWA50C2710 O 31 REACTOR 1 G0C452J00002 O 32 TERMINAL BOARD ASSY 1 CWA28K1076J O 33 TERMINAL BOARD ASSY 1 CWA28K1277 O 38 ELECTRONIC CONTROLLER MAIN 1 CWA73C9229R O 40 CONTROL BOARD COVER TOP 1 CWH131333 41 CABINET SIDE PLATE 1 CWE041490A 42 HANDLE 1 CWE161010 43 CA...

Page 109: ...18RB4U REMARK 80 TUBE ASSY CO CAP TUBE 1 CWT01C6093 81 DISCHARGE MUFFLER 4 W VALVE 1 CWB121055 NOTE All parts are supplied from PAPAMY Malaysia Vendor Code 00029488 O marked parts are recommended to be kept in stock Printed in Malaysia FY0315 0 ...

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