Panasonic CS-AE9NKE Page 83 Service Manual Download

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15.4.24 F91 (Refrigeration Cycle Abnormality)

Malfunction Decision Conditions

•

During cooling, compressor frequency = Fcmax.

•

During heating, compressor frequency > Fhrated.

•

During cooling and heating operation, running current: 0.65A < I < 1.65A.

•

During cooling, indoor intake - indoor pipe < 4°C.

•

During heating, indoor pipe - indoor intake < 5°C.

Multi Models Only

Gas shortage detection 1: A gas shortage is detected by checking the CT-detected input current value and

the compressor running frequency. During startup and operating of cooling and heating, input current <
8.78/256 (A/Hz) × compressor running fre 0.25.

Gas shortage detection 2: A gas shortage is detected by checking the difference between indoor pipe

temperature and indoor intake air temperature during cooling and heating.

Malfunction Caused

•

Refrigerant shortage (refrigerant leakage)

•

Poor compression performance of compressor

•

2/3 way valve closed

•

Detection error due to faulty indoor intake air or indoor pipe temperature sensors.

Troubleshooting

Summary of Contents for CS-AE9NKE

Page 1: ... Select The Best Location 24 11 2 Indoor Unit 25 11 3 Outdoor Unit 30 12 Operation and Control 33 12 1 Basic Function 33 12 2 Indoor Fan Motor Operation 34 12 3 Outdoor Fan Motor Operation 35 12 4 Airflow Direction 35 12 5 Quiet operation Cooling Mode Cooling area of Dry Mode 37 PRECAUTION OF LOW TEMPERATURE In order to avoid frostbite be assured of no refrigerant leakage during the installation o...

Page 2: ...on Control For Heating Operation 51 14 Servicing Mode 53 14 1 Auto OFF ON Button 53 14 2 Remote Control Button 54 15 Troubleshooting Guide 55 15 1 Refrigeration Cycle System 55 15 2 Breakdown Self Diagnosis Function 57 15 3 Error Code Table 58 15 4 Self diagnosis Method 60 16 Disassembly and Assembly Instructions 90 16 1 Indoor Unit 90 16 2 Outdoor Electronic Controller Removal Procedure 95 17 Tec...

Page 3: ... Device RCD Otherwise 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 acte...

Page 4: ...lting 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 600 C 7 Power supply connection to the room air conditioner Use power supply cord 3 1 5 mm 2 type designatio...

Page 5: ...el dB 55 42 39 dB A 46 Cooling Outdoor Noise H L QLo Power Level dB 61 kW 0 85 3 20 6 50 BTU h 2900 10900 22200 Capacity kcal h 730 2750 5590 Running Current A 2 7 Input Power W 165 575 1 70k W W 5 15 5 57 3 82 BTU hW 17 58 18 96 13 06 COP kcal hW 4 42 4 78 3 29 Power Factor 93 dB A 42 27 24 Indoor Noise H L QLo Power Level dB 58 43 40 dB A 47 Heating Outdoor Noise H L QLo Power Level dB 62 Low Te...

Page 6: ...Cool Fan m 3 min ft 3 min 9 99 353 Me Heat m 3 min ft 3 min 11 54 408 Cool Fan m 3 min ft 3 min 12 3 435 Hi Heat m 3 min ft 3 min 14 1 500 Cool Fan m 3 min ft 3 min 13 46 475 Indoor Airflow SHi Heat m 3 min ft 3 min 15 01 530 Cool Fan m 3 min ft 3 min 33 1 1170 Outdoor Airflow Hi Heat m 3 min ft 3 min 34 0 1200 Control Device Expansion Valve Refrigerant Oil cm 3 FV50S 450 Refrigeration Cycle Refri...

Page 7: ...door temperature of 27 C Dry Bulb 80 6 F Dry Bulb 19 0 C Wet Bulb 66 2 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 Heating capacities are based on indoor temperature of 20 C Dry Bulb 68 F Dry Bulb and outdoor air temperature of 7 C Dry Bulb 44 6 F Dry Bulb 6 C Wet Bulb 42 8 F Wet Bulb 3 Heating low temperature capacity Input Power and COP m...

Page 8: ... A 48 Cooling Outdoor Noise H L QLo Power Level dB 63 kW 0 85 4 20 7 70 BTU h 2900 14300 26300 Capacity kcal h 730 3610 6620 Running Current A 4 0 Input Power W 165 845 2 26k W W 5 15 4 97 3 41 BTU hW 17 58 16 92 11 64 COP kcal hW 4 42 4 27 2 93 Power Factor 92 dB A 44 33 30 Indoor Noise H L QLo Power Level dB 60 49 46 dB A 50 Heating Outdoor Noise H L QLo Power Level dB 65 Low Temp Capacity kW I ...

Page 9: ... m 3 min ft 3 min 10 7 378 Me Heat m 3 min ft 3 min 12 82 453 Cool Fan m 3 min ft 3 min 13 2 465 Hi Heat m 3 min ft 3 min 15 0 530 Cool Fan m 3 min ft 3 min 14 11 498 Indoor Airflow SHi Heat m 3 min ft 3 min 15 91 562 Cool Fan m 3 min ft 3 min 34 4 1215 Outdoor Airflow Hi Heat m 3 min ft 3 min 35 6 1255 Control Device Expansion Valve Refrigerant Oil cm 3 FV50S 450 Refrigeration Cycle Refrigerant T...

Page 10: ...perature of 27 C Dry Bulb 80 6 F Dry Bulb 19 0 C Wet Bulb 66 2 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 Heating capacities are based on indoor temperature of 20 C Dry Bulb 68 F Dry Bulb and outdoor air temperature of 7 C Dry Bulb 44 6 F Dry Bulb 6 C Wet Bulb 42 8 F Wet Bulb 3 Heating low temperature capacity Input Power and COP measured ...

Page 11: ... 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 Operation Improvement o Quiet mode to reduce the indoor unit operating sound o Powerful mode to reach the desired room temperature quickly o 24 hour timer setting o 8 10 C HEAT operation is designed to provide heating...

Page 12: ...12 4 Location of Controls and Components 4 1 Indoor Unit 4 2 Outdoor Unit 4 3 Remote Control ...

Page 13: ...13 5 Dimensions 5 1 Indoor Unit ...

Page 14: ...14 5 2 Outdoor Unit ...

Page 15: ...15 6 Refrigeration Cycle Diagram ...

Page 16: ...16 7 Block Diagram ...

Page 17: ...17 8 Wiring Connection Diagram 8 1 Indoor Unit ...

Page 18: ...18 8 2 Outdoor Unit Resistance of Compressor Windings CONNECTION 5RD132XBE21 U V 1 897Ω U W 1 907Ω V W 1 882Ω ...

Page 19: ...19 9 Electronic Circuit Diagram 9 1 Indoor Unit ...

Page 20: ...20 9 2 Outdoor Unit ...

Page 21: ...21 10 Printed Circuit Board 10 1 Indoor Unit 10 1 1 Main Printed Circuit Board 10 1 2 Indicator Printed Circuit Board ...

Page 22: ...22 10 1 3 Receiver Printed Circuit Board 10 1 4 High Voltage Power Supply Printed Circuit Board ...

Page 23: ...23 10 2 Outdoor Unit 10 2 1 Main Printed Circuit Board ...

Page 24: ...nded installation height for indoor unit shall be at least 2 5 m 11 1 2 Outdoor Unit If an awning is built over the unit to prevent direct sunlight or rain be careful that heat radiation from the condenser is not obstructed There should not be any animal or plant which could be affected by hot air discharged Keep the spaces indicated by arrows from wall ceiling fence or other obstacles Do not plac...

Page 25: ...ays mount the installation plate horizontally by aligning the marking off line with the thread and using a level gauge 2 Drill the piping plate hole with ø70 mm hole core drill o Line according to the left and right side of the installation plate The meeting point of the extended line is the center of the hole Another method is by putting measuring tape at position as shown in the diagram above Th...

Page 26: ...1 2 3 Indoor Unit Installation 11 2 3 1 For the right rear piping 11 2 3 2 For the right and right bottom piping 11 2 3 3 For the embedded piping This can be used for left rear piping and bottom piping also ...

Page 27: ...e wire if the existing wire from concealed wiring or otherwise is too short o In unavoidable case joining of power supply cord between isolating devices and terminal board of air conditioner shall be done by using approved socket and plug with earth pin rated 15 16A Wiring work to both socket and plug must follow to national wiring standard 4 Bind all the power supply cord lead wire with tape and ...

Page 28: ...ghten with screw and close the front panel Note Isolating Devices Disconnecting means should have minimum 3 0 mm contact gap Ensure the colour of wires of outdoor unit and the terminal Nos are the same to the indoor s respectively Earth wire shall be Yellow Green Y G in colour and longer than other AC wires as shown in the figure for the electrical safety in case of the slipping out of the cord fr...

Page 29: ...29 ...

Page 30: ...y onto the copper pipe In case of using long piping Connect the piping Align the center of piping and sufficiently tighten the flare nut with fingers Further tighten the flare nut with torque wrench in specified torque as stated in the table 11 3 2 2 Connecting the piping to Outdoor Decide piping length and then cut by using pipe cutter Remove burrs from cut edge Make flare after inserting the fla...

Page 31: ...y ten minutes 4 Close the Low side valve of the charging set and turn off the vacuum pump Make sure that the needle in the gauge does not move after approximately five minutes Note BE SURE TO TAKE THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE 5 Disconnect the charging hose from the vacuum pump and from the service port of the 3 way valve 6 Tighten the service port caps of the 3 way valv...

Page 32: ...ther AC wires for safety reason 11 3 5 Piping Insulation 1 Please carry out insulation at pipe connection portion as mentioned in Indoor Outdoor Unit Installation Diagram Please wrap the insulated piping end to prevent water from going inside the piping 2 If drain hose or connecting piping is in the room where dew may form please increase the insulation by using POLY E FOAM with thickness 6 mm or ...

Page 33: ... settings 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 12 1 2 Cooling Operation 12 1 2 1 Thermostat control Compressor is OFF when Intake Air Temperature Internal Setting Temperature 1 5 C continue for 3 minutes Compressor is ON after waiting for 3 minutes if t...

Page 34: ...2nd judgment onwards o If indoor intake temperature remote control setting temperature 3 C if previous operate in DRY mode then continue in DRY mode otherwise COOL mode is decided o If 2 C indoor intake temperature remote control setting temperature 3 C maintain with previous mode o If indoor intake temperature remote control setting temperature 2 C HEAT mode is decided 12 1 6 Fan Operation Fan Op...

Page 35: ... 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 Outdoor fan motor is operated with 15 fan speed number of rotations It starts when compressor starts operation and it stops 30 seconds after compressor stops operation 12 4 Airflow Direction 1 Th...

Page 36: ...ontrol the vane will shift to close position 2 Manual vertical airflow direction can be set using remote control the angles of the vane are as stated above and the positions of the vane are as Figure 2 below When the air conditioner is stopped using remote control the vane will shift to close position 58 C 50 C Indoor Heat Exchanger Temperature 36 C 30 C C A Figure 1 B Figure 2 Upper vane 60 Lower...

Page 37: ...operation if timer on activates quiet operation maintains 6 After off when on back quiet operation is not memorised C Control contents 1 Fan speed is changed from normal setting to quiet setting of respective fan speed This is to reduce sound of Hi Me Lo for 3dB some models more than 3dB 2 Fan speed for quiet operation is reduced from setting fan speed 12 6 Quiet operation Heating A Purpose To pro...

Page 38: ...remote control the unit with timer set will start operate earlier than the setting time This is to provide a comfortable environment when reaching the set ON time 60 minutes before the set time indoor at fan speed of Lo and outdoor fan motor start operate for 30 seconds to determine the indoor intake air temperature and outdoor air temperature in order to judge the operation starting time From the...

Page 39: ...mer Setting ON Quiet Mode ON Powerful Mode ON nanoe G ON 8 10 C HEAT ON Econavi ON Light OFF Operation OFF Timer Setting OFF Quiet Mode OFF Powerful Mode OFF nanoe G OFF 8 10 C HEAT OFF Econavi OFF Note If POWER LED is blinking the possible operation of the unit are Hot Start operation mode judgment or ON timer sampling If Timer LED is blinking there is an abnormality operation occurs ...

Page 40: ...Auto Fan Speed and no Powerful operation is allowed Even if Fan Speed button is pressed no signal is sent to the unit and no change on remote control display Auto Fan Speed for nanoe G operation changes from SHi to Hi after 4 hours of operation Airflow direction control o During any operation mode combines with nanoe G operation airflow direction follows respective operation mode o During nanoe G ...

Page 41: ...tion to cancel the blinking o Abnormal discharge error Judgment method During nanoe G operation the nanoe G system has abnormal discharge due to short circuit caused by water or dust adhesion and so forth with Lo feedback voltage at microcontroller When abnormal discharge occurred every 30 minutes the unit supplies power to the nanoe G system When abnormal discharge occurs for 24 times continuousl...

Page 42: ...oor PCB or nanoe G high voltage power supply damage Operations except nanoe G continue Both Timer indicator and nanoe G indicator blink Troubleshooting method Press nanoe G button or OFF ON button to stop the operation Change nanoe G high voltage power supply or main PCB When Lo feedback voltage supplied to nanoe G system during nanoe G operation ON nanoe G indicator and Timer indicator stop blink...

Page 43: ...Sensor During ECONAVI operation the sunlight sensor detects sunlight intensity coming through windows and differentiates between sunny and cloudy or night to further optimize energy saving by adjusting the temperature Sunlight judgment is as following Sunlight intensity reset Judge sunlight intensity Judge ambient condition Temperature shift 12 12 1 1 Sunlight Intensity Reset The sunlight intensit...

Page 44: ...ss and release within 10s Security Level 1 Less sensitive to sunlight intensity Security Level 3 Default sensitivity level Security Level 5 More sensitive to sunlight intensity Default Battery insert Set to Level 3 Other than default Display last set data Transmit solar radiation level after 2 secs go back to normal mode Set to level 4 Press Timer Set to level 5 Set to level 1 Set to level 2 Remot...

Page 45: ...Transmit sunlight sensor check code and after 2 seconds return to normal mode Remote control normal mode Operation details o The sunlight sensor check mode will be operated for 5 minutes o During check mode the ON and OFF timer will be memorized but it operation be ignored o During check mode if the sunlight sensor check code is retransmitted the 5 minutes counter will be reset o During check mode...

Page 46: ...ion error counter will increase by 1 time If the ECONAVI is OFF the 24 hours timer will be reset but the sunlight sensor disconnection error counter will not be reset Error Code judgment o When sunlight sensor disconnection error counter reached 15 times H70 occurred o No TIMER indicator or ECONAVI indicator blinks When error code happened the unit is able to operate without sunlight sensor ...

Page 47: ...TEMP down button at the remote control o 10 C Pressing TEMP up button at the remote control During the operation of this mode o The indoor fan speed will remain at Hi fan tap all the time included deice process o Powerful operation Quiet operation Econavi operation and Fan Speed selection are disabled o Cold draft prevention control is disabled Control condition Caution If the indoor temperature c...

Page 48: ... 03 5 57 Cooling Soft Dry B 3 51 5 03 Cooling Soft Dry C 3 51 5 03 Heating 7 23 14 76 9 79 14 76 4 The first 30 minutes of cooling operation A will be applied 40 C 39 C Outdoor air temperature 39 C 38 C C A B 13 1 3 IPM Power Transistor Prevention Control A Overheating Prevention Control 1 When the IPM temperature rises to 100 C compressor operation will stop immediately 2 Compressor operation res...

Page 49: ...1 15A During Cooling and Soft Dry operations Indoor suction temperature indoor piping temperature is below 4 C During Heating operations Indoor piping temperature indoor suction is under 5 C b Control contents Compressor stops and restart after 3 minutes If the conditions above happen 2 times within 20 minutes the unit will o Stop operation o Timer LED blinks and F91 indicated 13 1 6 Low Frequency...

Page 50: ...ame time indoor fan speed will be higher than during its normal operation 4 If indoor heat exchanger temperature is higher than 5 C for 5 minutes the fan speed will return to its normal operation 13 2 4 Freeze Prevention Control 2 1 Control start conditions During Cooling operation and soft dry operation o During thermo OFF condition indoor intake temperature is less than 10 C or o Compressor stop...

Page 51: ...ed during COOL or DRY operation During freeze prevention control and timer preliminary operation this control is not applicable o Control content Depends on compressor conditions Compressor OFF Compressor ON The indoor unit fan stops temporarily and then starts to blow at minimum airflow for 30 seconds Compressor ON Compressor OFF The indoor unit fan stops for 90 seconds and then blows at minimum ...

Page 52: ... Frequency Limited 13 3 4 Compressor Oil Return Control When compressor starts the compressor will be regulated for 240 seconds 13 3 5 Cold Draught Prevention Control When indoor pipe temperature is low 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 m...

Page 53: ...n 3 REMOTE CONTROL NUMBER SWITCH MODE The Remote Control Number Switch Mode will be activated if the Auto OFF ON button is pressed continuously for more than 11 seconds 3 beep sounds will occur at 11th seconds to identify the Remote Control Number Switch Mode is in standby condition and press AC RESET button and then press any button at remote control to transmit and store the desired transmission...

Page 54: ...mote Control Receiving Sound OFF ON Mode is restarted 14 2 Remote Control Button 14 2 1 SET BUTTON To check remote control transmission code and store the transmission code to EEPROM o Press Set button for more than 10 seconds by using pointer o Press TIMER SET button until a beep sound is heard as confirmation of transmission code changed 14 2 2 RESET RC To clear and restore the remote control se...

Page 55: ... problems before inspecting the refrigeration cycle Such problems include insufficient insulation problem with the power source malfunction of a compressor and a fan The normal outlet air temperature and pressure of the refrigeration cycle depends on various conditions the standard values for them are shown in the table on the right ...

Page 56: ...tion Low Pressure High Pressure Electric current during operation Insufficient refrigerant gas leakage Ô Ô Ô Ô Ô Ô Clogged capillary tube or strainer Ô Ô Ô Ò Ò Ò Short circuit in the indoor unit Ô Ô Ô Ò Ò Ò Heat radiation deficiency of the outdoor unit Ò Ò Ò Ô Ô Ô Inefficient compression Ò Ô Ô Ò Ô Ô Carry out the measurements of pressure electric current and temperature fifteen minutes after an op...

Page 57: ... Display Memorized Error Protective Operation Status 1 Turn power on 2 Press the CHECK button on the remote 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 w...

Page 58: ...mality 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 exchanger temperature sensor 1 lead wire and connector H30 Outdoor discharge pipe temperature sensor abnormali...

Page 59: ... and pipe Indoor heat exchanger sensor lead wire and connector Expansion valve lead wire and connector F90 Power factor correction PFC circuit protection 4 times happen within 10 minutes Power factor correction circuit abnormal Outdoor PCB faulty F91 Refrigeration cycle abnormality 2 times happen within 20 minutes Refrigeration cycle abnormal Insufficient refrigerant or valve close F93 Compressor ...

Page 60: ...transmission is checked whether it is normal Malfunction Caused Faulty indoor unit PCB Faulty outdoor unit PCB Indoor unit outdoor unit signal transmission error due to wrong wiring Indoor unit outdoor unit signal transmission error due to breaking of wire in the connection wires between the indoor and outdoor units Indoor unit outdoor unit signal transmission error due to disturbed power supply w...

Page 61: ...are interconnected Malfunction Caused Wrong models interconnected Wrong indoor unit or outdoor unit PCBs mounted Indoor unit or outdoor unit PCBs defective Indoor outdoor unit signal transmission error due to wrong wiring Indoor outdoor unit signal transmission error due to breaking of wire 3 in the connection wires between the indoor and outdoor units Troubleshooting ...

Page 62: ...ction Decision Conditions During startup and operation of cooling and heating the temperatures detected by the indoor intake air temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 63: ...n Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor compressor temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 64: ...ions A current transformer CT is detected by checking the compressor running frequency rated frequency and CT detected input current less than 0 65A for continuously 20 seconds Malfunction Caused CT defective Outdoor PCB defective Compressor defective low compression Troubleshooting ...

Page 65: ...etermine abnormal fan motor feedback of rotation 2550rpm or 50rpm Malfunction Caused Operation stops due to short circuit inside the fan motor winding Operation stops due to breaking of wire inside the fan motor Operation stops due to breaking of fan motor lead wires Operation stops due to Hall IC malfunction Operation error due to faulty indoor unit PCB Troubleshooting ...

Page 66: ... Decision Conditions During startup and operation of cooling and heating the temperatures detected by the indoor heat exchanger temperature sensor 1 are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 67: ... Decision Conditions During startup and operation of cooling and heating the temperatures detected by the indoor heat exchanger temperature sensor 2 are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 68: ...m Abnormal Malfunction Decision Conditions During standby of cooling and heating operation e ion breakdown occurs and air conditioner stops operation Malfunction Caused Faulty indoor main PCB Faulty indoor e ion power module Troubleshooting ...

Page 69: ...ction Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 70: ...ction Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 71: ...tion Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 72: ...nction Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor heat exchanger temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 73: ...alfunction Decision Conditions The supply power is detected for its requirement by the indoor outdoor transmission Malfunction Caused Wrong models interconnected Wrong indoor unit and outdoor unit PCBs used Indoor unit or outdoor unit PCB defective Troubleshooting ...

Page 74: ...ction Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor heat sink temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 75: ...Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor gas pipe temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 76: ...ction Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor liquid pipe temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 77: ...eration is used to determine abnormal fan motor Malfunction Caused Operation stops due to short circuit inside the fan motor winding Operation stops due to breaking of wire inside the fan motor Operation stops due to breaking of fan motor lead wires Operation stops due to Hall IC malfunction Operation error due to faulty outdoor unit PCB Troubleshooting ...

Page 78: ...During heating operation the temperature detected by the indoor pipe temperature sensor is above 60 C Malfunction Caused Clogged air filter of the indoor unit Dust accumulation on the indoor unit heat exchanger Air short circuit Detection error due to faulty indoor pipe temperature sensor Detection error due to faulty indoor unit PCB Troubleshooting ...

Page 79: ...Decision Conditions Freeze prevention control takes place when indoor pipe temperature is lower than 2 C Malfunction Caused Clogged air filter of the indoor unit Dust accumulation on the indoor unit heat exchanger Air short circuit Detection error due to faulty indoor pipe temperature sensor Detection error due to faulty indoor unit PCB Troubleshooting ...

Page 80: ...onditions When heating operation when indoor pipe temperature is below 10 C When cooling operation when indoor pipe temperature is above 45 C Malfunction Caused Connector in poor contact Faulty sensor Faulty outdoor unit PCB 4 way valve defective Troubleshooting ...

Page 81: ...rature and indoor pipe temperature is above 10 C or indoor pipe temperature is below 1 0 C Remark When the indoor standby unit is freezing the outdoor unit transfers F17 error code to the corresponding indoor unit and H39 to other indoor unit s Malfunction Caused Wrong wiring connection Faulty sensor Faulty expansion valve Troubleshooting ...

Page 82: ...peration of cooling and heating when Power Factor Correction PFC protection circuitry at the outdoor unit main PCB senses abnormal high DC voltage level Malfunction Caused DC voltage peak due to power supply surge DC voltage peak due to compressor windings not uniform Faulty outdoor PCB Troubleshooting ...

Page 83: ...by checking the CT detected input current value and the compressor running frequency During startup and operating of cooling and heating input current 8 78 256 A Hz compressor running frequency 0 25 o Gas shortage detection 2 A gas shortage is detected by checking the difference between indoor pipe temperature and indoor intake air temperature during cooling and heating Malfunction Caused Refriger...

Page 84: ...alfunction Decision Conditions A compressor rotation failure is detected by checking the compressor running condition through the position detection circuit Malfunction Caused Compressor terminal disconnect Outdoor PCB malfunction Troubleshooting ...

Page 85: ...s detected by the outdoor pipe temperature sensor Malfunction Caused Outdoor pipe temperature rise due to short circuit of hot discharge air flow Outdoor pipe temperature rise due to defective of outdoor fan motor Outdoor pipe temperature rise due to defective outdoor pipe temperature sensor Outdoor pipe temperature rise due to defective outdoor unit PCB Troubleshooting ...

Page 86: ...ted o Heat Sink Overheating During operation of cooling and heating when heat sink temperature data 90 C is detected by the heat sink temperature sensor Malfunction Caused IPM overheats due to short circuit of hot discharge air flow 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 M...

Page 87: ...on of cooling and heating when compressor tank temperature data 112 C is detected by the compressor tank temperature sensor Malfunction Caused Refrigerant shortage refrigerant leakage 2 3 way valve closed Detection error due to faulty compressor tank temperature sensor Troubleshooting ...

Page 88: ... detected by checking the input current value being detected by current transformer CT with the compressor running Malfunction Caused Over current due to compressor failure Over current due to defective outdoor unit PCB Over current due to defective inverter main circuit electrolytic capacitor Over current due to excessive refrigerant Troubleshooting ...

Page 89: ...door unit PCB Troubleshooting Checking the power transistor Never touch any live parts for at least 10 minutes after turning off the circuit breaker If unavoidable necessary to touch a live part make sure the power transistor s supply voltage is below 50V using the tester For the UVW make measurement at the Faston terminal on the board of the relay connector Tester s negative terminal Power transi...

Page 90: ... the capacitor has discharged sufficiently before proceeding with repair work Failure to heed this caution may result in electric shocks 16 1 Indoor Unit 16 1 1 Indoor Electronic Controllers Cross Flow Fan and Indoor Fan Motor Removal Procedures 16 1 1 1 To remove front grille Figure 1 16 1 1 2 To remove electronic controller Figure 2 ...

Page 91: ...91 Figure 3 Figure 4 16 1 1 3 To remove discharge grille Figure 5 ...

Page 92: ...92 16 1 1 4 To remove control board Figure 6 16 1 1 5 To remove cross flow fan and indoor fan motor Figure 7 ...

Page 93: ...93 Figure 8 Figure 9 ...

Page 94: ...94 Figure 10 ...

Page 95: ...ler be careful of electrostatic discharge 1 Remove the 5 screws of the Top Panel Fig 1 2 Remove the 8 screws of the Front Panel Fig 2 3 Remove the screw of the Terminal 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 ...

Page 96: ...7 Technical Data 17 1 Operation Characteristics 17 1 1 CU HE9NKE CU AE9NKE Cooling Characteristic Condition Indoor temperature 27 19 C Remote condition High fan speed Cool 16 C Comp Hz Rated Fc Voltage 230V ...

Page 97: ...97 Piping Length Characteristic Condition Indoor temperature 27 19 C 35 C Remote condition High fan speed Cool 16 C Comp Hz Rated Fc Voltage 230V ...

Page 98: ...98 Heating Characteristic Condition Indoor temperature 20 C Remote condition High fan speed Heat 30 C Comp Hz Rated Fh Voltage 230V ...

Page 99: ...99 Piping Length Characteristic Condition Indoor temperature 20 C 7 6 C Remote condition High fan speed Heat 30 C Comp Hz Rated Fh Voltage 230V ...

Page 100: ...100 17 1 2 CU HE12NKE Cooling Characteristic Condition Indoor temperature 27 19 C Remote condition High fan speed Cool 16 C Comp Hz Rated Fc Voltage 230V ...

Page 101: ...101 Piping Length Characteristic Condition Indoor temperature 27 19 C 35 C Remote condition High fan speed Cool 16 C Comp Hz Rated Fc Voltage 230V ...

Page 102: ...102 Heating Characteristic Condition Indoor temperature 20 C Remote condition High fan speed Heat 30 C Comp Hz Rated Fh Voltage 230V ...

Page 103: ...103 Piping Length Characteristic Condition Indoor temperature 20 C 7 6 C Remote condition High fan speed Heat 30 C Comp Hz Rated Fh Voltage 230V ...

Page 104: ...2 0 C 2 97 2 04 0 43 2 77 1 96 0 47 2 58 1 89 0 50 2 35 1 81 0 54 CU HE12NKE 230V Outdoor Temp C 30 35 40 46 Indoor wet bulb temp TC SHC IP TC SHC IP TC SHC IP TC SHC IP 17 0 C 3 47 2 63 0 76 3 24 2 52 0 82 3 02 2 43 0 87 2 74 2 30 0 94 19 0 C 3 50 0 83 19 5 C 3 81 2 76 0 77 3 56 2 65 0 83 3 31 2 55 0 89 3 01 2 43 0 96 22 0 C 4 15 2 86 0 79 3 88 2 75 0 85 3 61 2 65 0 91 3 28 2 53 0 98 TC Total Coo...

Page 105: ...3 29 27 35 1 6 42 10 43 25 32 O I 44 I I 45 I I 46 I I 47 I I 48 I I 49 23 B B B 11 19 18 14 21 22 37 20 15 12 5 16 17 A A B A A A B B A CWH55025J CWH55051J 9 8 7 24 9a 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 106: ...NSOR COMPLETE 1 CWA50C2401 25 ELECTRONIC CONTROLLER MAIN 1 CWA73C6842 CWA73C6850 CWA73C6843 O 26 ELECTRONIC CONTROLLER HVU 1 N0GE1F000002 O 27 CONTROL BOARD CASING 1 CWH102456 28 CONTROL BOARD TOP COVER 1 CWH131531 29 CONTROL BOARD FRONT COVER CO 1 CWH13C1286 30 TERMINAL BOARD COMPLETE 1 CWA28C2364 31 INDICATOR COMPLETE 1 CWE39C1231 32 INDICATOR HOLDER 1 CWD933466 33 FRONT GRILLE COMPLETE 1 CWE11C...

Page 107: ...AE9NKE CS HE12NKE REMARK 50 BAG 1 CWG861515 51 SHOCK ABSORBER L 1 CWG713484 52 SHOCK ABSORBER R 1 CWG713485 53 C C CASE 1 CWG568509 Note All parts are supplied from PAPAMY Malaysia Vendor Code 00029488 O marked parts are recommended to be kept in stock ...

Page 108: ...16 17 20 21 22 29 42 26 35 27 40 2 42 41 15 3 8 7 5 43 6 23B 23C 23A 4 11 33 28 34 19 1 10 12 39 49 48 51 14 38 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 109: ...D PROOF MATERIAL 1 CWG302745 23C SOUND PROOF MATERIAL 1 CWG302740 24 SENSOR CO COMP TEMP 1 CWA50C2894 O 25 SENSOR CO DISCHARGE 1 CWA50C2656 O 26 ELECTRONIC CONTROLLER MAIN 1 CWA73C6851R CWA73C6859R CWA73C6852R O 27 TERMINAL BOARD ASSY 1 CWA28K1036J O 28 CABINET SIDE PLATE CO 1 CWE04C1411 29 SENSOR CO AIR AND PIPE TEMP 1 CWA50C2893 O 30 CABINET SIDE PLATE L 1 CWE041579A 31 CABINET FRONT PLATE CO 1 ...

Page 110: ...SCRIPTION QTY CU HE9NKE CU AE9NKE CU HE12NKE REMARK 56 C C CASE 1 CWG566848 Note All parts are supplied from PAPAMY Malaysia Vendor Code 00029488 O marked parts are recommended to be kept in stock Printed in Malaysia SY0712 0 ...

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Panasonic CS-AE9NKE, Service Manual

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