Panasonic CS-NE9LKE Page 76 Service Manual Download

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15.4.23. F97 (Compressor Overheating)

Malfunction Decision Conditions

During operation 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

Summary of Contents for CS-NE9LKE

Page 1: ...r Unit 13 5 2 Outdoor Unit 14 6 Refrigeration Cycle Diagram 15 7 Block Diagram 16 8 Wiring Connection Diagram 17 8 1 Indoor Unit 17 8 2 Outdoor Unit 18 9 Electronic Circuit Diagram 19 9 1 Indoor Unit...

Page 2: ...ON Button 47 14 2 Remote Control Button 48 15 Troubleshooting Guide 49 15 1 Refrigeration Cycle System 49 15 2 Breakdown Self Diagnosis Function 51 15 3 Error Codes Table 52 15 4 Self diagnosis Metho...

Page 3: ...ing standard regulation and the installation instruction An independent circuit and single outlet must be used If electrical circuit capacity is not enough or defect found in electrical work it will c...

Page 4: ...method If the flare nut is over tightened after a long period the flare may break and cause refrigerant gas leakage 4 Do not touch outdoor unit air inlet and aluminium fin It may cause injury 5 Selec...

Page 5: ...3 5 Input Power W 115 730 1 36k COP W W 5 22 4 66 3 97 kcal hW 4 52 4 00 3 41 Power Factor 91 Indoor Noise H L QLo dB A 40 27 24 Power Level dB 56 Outdoor Noise H L dB A 47 Power Level dB 62 Low Temp...

Page 6: ...ion Height I D O D mm inch 290 11 7 16 540 21 9 32 Width I D O D mm inch 870 34 9 32 780 30 23 32 Depth I D O D mm inch 204 8 1 16 289 11 13 32 Weight Net I D O D kg lb 9 20 35 77 Piping Pipe Diameter...

Page 7: ...temperature 20 C outdoor 2 1 C 4 Heating extreme low temperature capacity Input Power and COP measured at 230 V indoor temperature 20 C outdoor 7 8 C 5 Specifications are subjected to change without p...

Page 8: ...put Power W 115 960 1 85k COP W W 5 22 4 17 3 57 kcal hW 4 52 3 58 3 07 Power Factor 93 Indoor Noise H L QLo dB A 42 33 30 Power Level dB 58 Outdoor Noise H L dB A 50 Power Level dB 65 Low Temp Capaci...

Page 9: ...on Height I D O D mm inch 290 11 7 16 540 21 9 32 Width I D O D mm inch 870 34 9 32 780 30 23 32 Depth I D O D mm inch 204 8 1 16 289 11 13 32 Weight Net I D O D kg lb 9 20 35 77 Piping Pipe Diameter...

Page 10: ...emperature 20 C outdoor 2 1 C 4 Heating extreme low temperature capacity Input Power and COP measured at 230 V indoor temperature 20 C outdoor 7 8 C 5 Specifications are subjected to change without pr...

Page 11: ...ent Random auto restart after power failure for safety restart operation Gas leakage protection Prevent compressor reverse cycle Inner protector to protect Compressor Noise prevention during soft dry...

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...

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...

Page 22: ...22 10 1 2 Power Printed Circuit Board 10 1 3 Indicator Printed Circuit Board...

Page 23: ...23 10 1 4 Receiver Printed Circuit Board 10 1 5 High Voltage Power Supply Printed Circuit Board...

Page 24: ...24 10 2 Outdoor Unit...

Page 25: ...vent 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 i...

Page 26: ...a level gauge 2 Drill the piping plate hole with 70 mm hole core drill Line according to the left and right side of the installation plate The meeting point of the extended line is the center of the h...

Page 27: ...27 1 For the right rear piping 2 For the right and right bottom piping 3 For the embedded piping This can be used for right bottom piping also...

Page 28: ...3 Bind all the indoor and outdoor connecting cable with tape and route the connecting cable via the escapement 4 Remove the tapes and connect the connecting cable between indoor unit and outdoor unit...

Page 29: ...cutter and then remove the burrs 2 Remove the burrs by using reamer If burrs is not removed gas leakage may be caused Turn the piping end down to avoid the metal powder entering the pipe 3 Please make...

Page 30: ...hten with torque wrench to the specified torque as stated in the table 11 3 3 Evacuation of the Equipment WHEN INSTALLING AN AIR CONDITIONER BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPE...

Page 31: ...nit according to the diagram below 5 Secure the power supply cord and connecting cable onto the control board with the holder 6 Attach the control board cover back to the original position with screw...

Page 32: ...depending on the air conditioner settings and the operation environment The final shifted value will be used as internal setting temperature and it is updated continuously whenever the electrical pow...

Page 33: ...fting will take place whenever operation mode changed from Cool Soft Dry to Heating or vice versa 12 1 6 Fan Operation Fan Operation is used to circulate air in a room During operation indoor fan run...

Page 34: ...ction can be automatic angles of direction is determined by operation mode heat exchanger temperature and intake air temperature and manual angles of direction can be adjusted using remote control 12...

Page 35: ...ack 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...

Page 36: ...ove judgment the decided operation will start operate earlier than the set time as shown below 12 8 2 OFF Timer Control OFF timer can be set using remote control the unit with timer set will stop oper...

Page 37: ...he Patrol Operation during unit start default with OFF ON button press Patrol button and hold for 5 seconds then release To disable the Patrol Operation press Patrol button and hold for 15 seconds the...

Page 38: ...ration is allowed Even if Fan Speed button is pressed no signal is sent to air conditioner and no change on LCD display During Patrol individual operation if e ion stops Indoor Fan stop operation d Ai...

Page 39: ...tion is OFF During Patrol individual mode Power supply to Patrol sensor is OFF Patrol LED and Timer LED blinking and H58 is indicated Timer LED will always blinking and the Patrol LED continues blinki...

Page 40: ...power to the e ion Air Purifying System If abnormal discharge is detected at filter short circuited due to water or dust adhesion etc the e ion indicator blinks immediately f Power failure During e io...

Page 41: ...at microcontroller supplied to filter during e ion stop due to PCB or filter s high voltage power supply damage Operations except e ion continue Both Timer indicator and e ion indicator blink Troubles...

Page 42: ...C Pressing TEMP down button at the remote control 10 C Pressing TEMP up button at the remote control During the operation of this mode The indoor fan speed will remain at Hi fan tap all the time inclu...

Page 43: ...X value for 5 seconds the frequency instructed will be increased 3 However if total outdoor unit running current exceeds Y value compressor will be stopped immediately for 3 minutes 4 The first 30 mi...

Page 44: ...ture 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 condi...

Page 45: ...ll 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...

Page 46: ...re Control The Max current value is regulated when the outdoor air temperature rise above 14 C in order to avoid compressor overloading 13 3 3 Overload Protection Control The compressor operating freq...

Page 47: ...ON button may be used together with remote control to set change the advance setting of air conditioner operation 3 REMOTE CONTROL NUMBER SWITCH MODE The Remote Control Number Switch Mode will be act...

Page 48: ...nter Press TIMER SET button until a beep sound is heard as confirmation of transmission code changed To change the air quality sensor sensitivity Press and release by using pointer Press the Timer Dec...

Page 49: ...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 a...

Page 50: ...s after an operation is started Cooling Mode Heating Mode Low Pressure High Pressure Electric current during operating Low Pressure High Pressure Electric current during operating Condition of the air...

Page 51: ...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 No...

Page 52: ...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...

Page 53: ...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...

Page 54: ...ransmission 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...

Page 55: ...tion 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 Cause...

Page 56: ...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 F...

Page 57: ...ons 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 de...

Page 58: ...termine 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...

Page 59: ...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 Caus...

Page 60: ...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 Caus...

Page 61: ...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 in...

Page 62: ...tion 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 Faul...

Page 63: ...tion 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 Fau...

Page 64: ...ion Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor discharge pipe temperature sen sor are used to determine sensor errors Malfunction...

Page 65: ...lfunction 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...

Page 66: ...ity Malfunction Decision Conditions If Patrol sensor feedback is 0V or 5V continuous for 6 hours Error will display only when the Patrol operation is ON Malfunction Caused Faulty connector connection...

Page 67: ...ration 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 Operati...

Page 68: ...uring 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...

Page 69: ...ecision 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 he...

Page 70: ...nditions 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...

Page 71: ...eration 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...

Page 72: ...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 x compressor running frequency 0 25 G...

Page 73: ...lfunction Decision Conditions A compressor rotation failure is detected by checking the compressor running condition through the position detection circuit Malfunction Caused Compressor terminal disco...

Page 74: ...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 outdo...

Page 75: ...ated 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 ci...

Page 76: ...n 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 clo...

Page 77: ...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 defectiv...

Page 78: ...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...

Page 79: ...Removal Procedures 16 1 1 To remove front grille 16 1 2 To remove power electronic controller High voltages are generated in the electrical parts area by the capacitor Ensure that the capacitor has di...

Page 80: ...80 16 1 3 To remove discharge grille...

Page 81: ...81 16 1 4 To remove control board 16 1 5 To remove cross flow fan and indoor fan motor...

Page 82: ...82...

Page 83: ...er be careful of electrostatic discharge 1 Remove the 3 screws of the Top Panel Fig 1 2 Remove the 6 screws of the Front Panel Fig 2 3 Remove the screw of the Terminal Board Cover 4 Remove the Top Cov...

Page 84: ...84 17 Technical Data 17 1 Operation Characteristics 17 1 1 CU NE9LKE...

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Page 88: ...88 17 1 2 CU NE12LKE...

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Page 92: ...63 22 0 C 2 97 2 04 0 51 2 77 1 96 0 55 2 58 1 89 0 59 2 35 1 81 0 64 230V Outdoor Temp C Indoor wet bulb temp 30 35 40 46 TC SHC IP TC SHC IP TC SHC IP TC SHC IP 17 0 C 3 47 2 63 0 83 3 24 2 52 0 90...

Page 93: ...Exploded View and Replacement Parts List 18 1 Indoor Unit Note The above exploded view is for the purpose of parts disassembly and replacement The non numbered parts are not kept as standard service...

Page 94: ...D COMPLETE 1 CWA28C2357 O 23 ELECTRONIC CONTROLLER MAIN 1 CWA73C4809 CWA73C4813 CWA73C4810 CWA73C4814 O 24 ELECTRONIC CONTROLLER POWER 1 CWA745837 O 25 ELECTRONIC CONTROLLER INDICATOR 1 CWA745995 O 26...

Page 95: ...95 18 2 Outdoor Unit 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 96: ...AS 1 CWB011434 O 18 4 WAYS VALVE 1 CWB001037J 19 2 WAYS VALVE LIQUID 1 CWB021333 O 20 DISCHARGE MUFFLER 1 CWB121021 21 V COIL COMPLETE 1 CWA43C2144J 22 V COIL COMPLETE 1 CWA43C2058J 24 SENSOR COMPLETE...

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