E2 Indoor Thermistor Abnormal Indoor Fault
Abnormal indoor fault of E3 thermistor
E4 outdoor EEPROM fault outdoor control panel fault
E5 IPM protection outdoor module failure
E6 AC current overcurrent protection or current sensor fault outdoor module fault.
Communication failure between E7 CBD (outdoor control panel) and module outdoor control panel failure.
E8 compressor overheat/overvoltage protection outdoor control panel failure.
E9 Power Overvoltage/Undervoltage Protection Outdoor Module Failure
E 10 compressor locked-rotor outdoor module failure.
Temperature protection outdoor control panel E 1 1 failure.
E 12 failure of outdoor control panel for abnormal protection of external fan.
E 13 outdoor defrosting resistance is abnormal and outdoor control panel is faulty.
E 14 outdoor suction resistance is abnormal, and outdoor control panel is out of order.
E 15 outdoor environmental resistance abnormality outdoor control panel failure.
E 16 outdoor expiratory resistance is abnormal, and the outdoor control panel is faulty.
E 17 outdoor control panel failure due to high suction of printing machine.
E 18 abnormal communication between internal machine and external machine and internal and external communication failure.
E 19 abnormal indoor fault of indoor EEPROM
E20 Abnormal indoor fan indoor fault
E2 1 Out-of-step position of out-of-step press operation outdoor module failure.
E22 position detection loop fault outdoor module fault
E23 press damaged outdoor module failure
E24 indoor overload shutdown indoor fault
E25 indoor antifreeze shutdown indoor fault
E26 Abnormal indoor TC indoor fault
E27 printer outdoor module fault vibration is too large.
Abnormal start of printing machine outdoor module failure
Mitsubishi Heavy Industries Haier Cabinet Machine Fault Code
Model FDF505HES
No display
The indoor and outdoor units are powered off, and the power supply is turned off.
The operating switch circuit board is defective.
E 1 The operating switch is damaged, and the indoor unit circuit board is defective.
E2 indoor unit location number is duplicate, and the indoor unit circuit board is defective.
E3 has no corresponding outdoor unit number. The internal and external signal lines are disconnected, and the outdoor unit power supply is turned off.
The outdoor unit number is set incorrectly (set to 48 or 49).
E4 indoor unit number is set incorrectly (set to 48 or 49), and the indoor unit circuit board is defective.
E5 communication between indoor unit and outdoor unit is abnormal, and outdoor unit power supply is abnormal (when outdoor unit power supply is separated).
The outdoor unit circuit board is defective.
The thermistor of E6 indoor heat exchanger and indoor circuit board are defective.
E7 Indoor unit thermistor and indoor unit circuit board have poor suction.
E8 Indoor heat exchanger temperature is high (during heating), indoor heat exchanger thermistor is short-circuited, and indoor circuit board is defective.
E 10 when the operation switch is controlled by multiple groups, the number of groups exceeds.
E3 1 The outdoor unit number is duplicate, and the outdoor unit circuit board is defective.
E32 power supply is out of phase or T-phase (main), and the outdoor circuit board is defective.
E33 compressor has overcurrent, and the compressor lacks S-phase or R-phase (secondary wiring of primary 52C).
Lack of phase and bad outdoor circuit board.
E34 52C secondary phase is short of T phase, and outdoor circuit board is defective.
E35 The outdoor heat exchanger has high temperature (when air is cooled), and the thermistor of the outdoor heat exchanger is poor (short circuit).
The outdoor unit circuit board is defective.
E36 compressor outlet refrigerant pipe temperature is too high, compressor outlet refrigerant pipe temperature thermistor is bad, outdoor unit
The circuit board is broken.
E37 Thermal resistor of outdoor heat exchanger and outdoor circuit board are defective.
E38 outdoor temperature thermistor is not good, and outdoor circuit board is not good.
E39 compressor outlet refrigerant pipe thermistor is bad, and outdoor unit circuit board is bad.
E40 outdoor unit safety equipment is working, and the outdoor unit circuit board is defective.
The following items are displayed on the panel:
E57 Insufficient refrigerant
E28 How to set SW 13-6 on the control panel: set SW 13-6 to OFF.
E9 and E40 outdoor units are not normal.
Haier KFR-7 1QW/A fault code (KFR- 120QW/A)
The indoor ambient temperature is not good when the running light flashes 1.
2 indoor pipeline temperature is not good
The outer ring temperature of room 3 is not good.
4 outdoor pipeline temperature is not good
Haier KFR-60LW/BPF fault code
E 1 room temperature sensor failure.
E2 indoor coil sensor fault
E3 outdoor ambient temperature sensor failure
E4 outdoor coil sensor fault
E5 overcurrent protection
E6 pipeline pressure protection
E7 outdoor undervoltage protection
Communication failure between E8 panel and motherboard.
E9 Indoor and outdoor communication failure
E0 indoor and outdoor communication failure
LED light display
L 1 L2
Bad room temperature sensor: 1 flashing off.
Indoor coil sensor is broken: flashing 2 goes out.
Heating overload: flashing 4 off
Refrigeration and ice connection: flash 5 and go out.
Communication failure: Flash 7 is off.
Fan failure: 8 flashes off.
Module failure: flashing 1
No load: flash 2
Compressor overheating: flash 4
Total current overcurrent: flash 5
Outdoor ambient temperature sensor is bad: flashing 6.
Outdoor pipeline temperature sensor damaged: flashing 7
ROM bad: flash 8
Power overvoltage protection: flashing 10.
Refrigeration overload: flashing 12
E2ROM error: flashing 14.
Haier KTR-280QW/BP frequency conversion central air conditioning outdoor fault code
Display content failure reason
04 frequency conversion signal circuit, TRS circuit failure
Wrong wiring fault of Ab pressure sensor (Pd, pS)
AA high voltage sensor (Pd) circuit fault.
Protection of exhaust temperature TD 1 when AE inverter compressor runs at low frequency.
Circuit fault of exhaust temperature sensor TD 1 of A0 inverter compressor.
A 1 Inverter Compressor Exhaust Temperature Sensor TD2 Circuit Fault
A2 suction temperature sensor TS protection action
A6 Inverter Compressor Exhaust Temperature Sensor TD 1 Protection Action
A7 TS suction temperature sensor protection action
Protection Action of Exhaust Temperature Sensor TD2 of BB Variable Frequency Compressor
BD Mg.ws 1 Contact adhesion, control circuit failure.
Under-voltage protection of Beryllium Refrigeration System
Breakdown of PS circuit of low pressure sensor in B4 refrigeration system
18 TE circuit fault of outdoor pipeline temperature sensor
Circuit failure of high pressure sensor in 22 Pd refrigeration system
95 indoor and outdoor communication circuit failure
96 indoor and outdoor address error
Overload protection of indoor and outdoor units
IC interface circuit board failure
E 1 Constant Frequency Compressor High Voltage Circuit Fault
E5 frequency conversion side IOL circuit failure
E6 fixed frequency side IOL, OL circuit, power phase sequence error.
Haier KTR-280QW/BP inverter central air conditioner inv outdoor.
Display content failure reason
2 1 high-voltage switch circuit failure at frequency conversion side
17 circuit fault of current transformer
14 frequency conversion side overcurrent protection circuit fault
1F current detection circuit fault
1d compressor system circuit fault.
Indoor fault code of Haier KTR-280QW/BP variable frequency central air conditioner
Display content failure reason
Abnormal indoor temperature sensor
Abnormal floating switch of drainage pump
B5 external input display
B6 External interlocking display
B9 Abnormal indoor pressure sensor
9A wiring error of indoor unit
1 1 Abnormal motor circuit (phase configuration)
12 circuit of indoor main control board is abnormal.
93 sensor TC 1
94 abnormal indoor tube temperature TC2 sensor
95 indoor and outdoor communication failure
97 centralized control communication failure
98 The centralized control address is set incorrectly.
9F Insufficient refrigerant
Haier KR-70QW, KF-7 1QW/S, KF- 120QW, KF 125FW maintenance codes.
E0 exhaust system fault
E 1 indoor temperature sensor failure
E2 indoor coil sensor fault
E3 outdoor ambient temperature sensor failure
E4 outdoor coil sensor fault
E5 overcurrent protection
E6 pipeline pressure protection
Communication failure between E7 panel and motherboard.
E8 motherboard and outdoor communication failure
E9 phase sequence fault caused by lack of phase
Haier commercial air conditioner (KTR series);
Indoor unit
1. Room temperature sensor (TA)
Circuit "OC"
2. Indoor heat exchange sensor
(TC 1) Circuit "93"
3. Indoor heat exchange sensor
(TC2) Circuit "94"
4. Indoor pressure sensor circuit "b9"
5. Motor circuit (phase control) "1 1"
6. Drainage pump, floating switch
System circuit "0b"
7. Judge "9F" as insufficient refrigerant circulation.
8. Indoor and outdoor communication circuit "95"
9. Centralized control communication circuit "97"
10. Centralized control address setting "98"
1 1. External input shows "b5"
12. External interlock shows "b6"
13. Wiring error of indoor unit
Incorrectly connected "9A"
14. Indoor substrate circuit "12"
15. judgment of refrigerant shortage in the system "Ed"
I/F control substrate
1.TRS frequency conversion serial signal loop
Circuit "04"
2. Outdoor thermal sensor (TE)
Circuit "18"
3. Exhaust temperature sensor of variable frequency compressor
(TD 1) circuit "A0"
4. Constant frequency compressor exhaust temperature sensor
(TD2) circuit "A 1"
5. air temperature sensor (TS)
Circuit "A2"
6. High voltage sensor (Pd)
Circuit "AA"
7. Low pressure sensor (Ps)
Circuit "b4"
8. Interface substrate circuit "1C"
9. High voltage protection action
(Pd) sensor "22"
10. Exhaust temperature of variable frequency compressor
(TD 1) Protection Action "A6"
1 1. Exhaust temperature of constant frequency compressor
(TD2) protection action "bb"
12. suction temperature (Ts)
Protection action "A7"
13. Low frequency exhaust temperature of inverter compressor
(TD 1) Protection Action "AE"
14. Low voltage protection action "bE"
15. High pressure of constant frequency press
Switch circuit "E 1"
16. frequency conversion IOL circuit "E5"
17.IOL。 OL circuit of outdoor frequency setter
Abnormal phase sequence of mechanical three-phase electricity "E6"
18. pressure sensor (Pd, Ps)
Wrong wiring "Ab"
19. Indoor and outdoor communication circuit "95"
20. Contradiction between indoor and outdoor addresses "96"
2 1.mgsw 1 contact adhesion control
Show "bd"
22. Connecting indoor unit capacity overload "89
Haier KFRD-7 1LW/F (single-phase power supply)
E 1: room temperature sensor failure.
E2: Indoor coil temperature sensor
E3: Outer Ring Temperature Sensor
E4: Outer Tube Temperature Sensor
E5: Excessive current
E6: Pressure protection
E7: Undervoltage Protection
E8: (Indoor) Panel. Main board communication
E9: Indoor. External communication
Haier kfr-50,60lw/bpj× f1inverter cabinet air conditioner
Displays the reason why the code failed.
E 1 the variable frequency power supply module is overheated or short-circuited.
The induced current of E2 current sensor is too small.
When E4 is heated, the temperature of the compressor temperature sensor exceeds 120 degrees.
E5 overcurrent protection
E6 Abnormal outdoor ambient temperature
E7 Abnormal outdoor pipeline temperature
Ea Power Overvoltage and Undervoltage Protection
When Ec is cooling, the outdoor condenser temperature exceeds 70 degrees.
Ee EEPROM error
Abnormal indoor ambient temperature of F 1
F2 indoor pipeline temperature anomaly
F4 overheat protection
F5 supercooling protection
F7 communication between indoor motherboard and control panel is abnormal.
Haier KFR-60LW/BPF inverter cabinet air conditioner (indoor)
Displays the reason why the code failed.
E 1 indoor ambient temperature sensor failure.
E2 indoor pipeline temperature sensor failure
E3 outdoor ambient temperature sensor failure
E4 outdoor pipeline temperature sensor failure
E5 overcurrent protection
E6 compressor overheating protection
E7 Outdoor under-voltage protection
Communication failure between E8 control board and motherboard.
E9 Indoor and outdoor communication failure
E0 indoor and outdoor communication failure
L 1 L2
Blinking 1 Turn off the room temperature sensor.
Flash 2 extinguishes indoor coil sensor failure.
Flash 4 extinguishes heating overload.
Flash 5 extinguishes refrigeration and icing.
Flash 7 eliminates communication failure
Flash 8 blower failure
Flash memory 1 module failure
Extinction 2 no-load
Fire extinguishing 4 compressor overheating
The total current of the flash lamp 5 is overcurrent.
Flash 6 outdoor environment sensor is broken.
The outdoor pipeline temperature sensor of fire fighting 7 is broken.
Flash memory 8 read-only memory is broken
10 power supply has over-voltage protection with flashing.
Flash 12 refrigeration overload
Flash 14 E2ROM error
Haier 6, 7 cabinet air conditioning fault code
Displays the reason why the code failed.
E 1 communication between remote controller and air conditioner is abnormal.
E6 indoor pipeline temperature open circuit
E7 indoor ambient temperature open circuit
E8 overheat protection (heating state)
E40 outdoor unit is abnormal.
E57 supercooling protection (cooling state)
Haier KFRD-52, 62, 7 1, 120 cabinets
Displays the reason why the code failed.
E 1 Abnormal indoor ambient temperature sensor
E2 Indoor Pipeline Temperature Sensor Abnormal
E3 outdoor ambient temperature sensor is abnormal.
E4 Outdoor Pipeline Temperature Sensor Abnormal
E5 overcurrent protection
Pipeline pressure protection of E6 system
E7 outdoor undervoltage protection (170- 180)
Communication failure between E8 controller and motherboard.
E9 Indoor and outdoor communication failure
Haier KFR-7 1, 120Q, KFR- 125FW embedded.
Displays the reason why the code failed.
E0 indoor drainage system failure
E 1 indoor ambient temperature sensor failure.
E2 indoor pipeline temperature sensor failure
E3 outdoor ambient temperature sensor failure
E4 outdoor pipeline temperature sensor failure
E5 overcurrent protection
E6 system pressure protection
E7 Communication failure between indoor panel and indoor motherboard.
E8 Communication failure between indoor and outdoor boards
E9 power supply phase sequence error or lack of phase
Machine fault code of Haier 7 1LW/F cabinet:
E 1 indoor ambient temperature sensor failure
E2 indoor coil sensor fault
E3 outdoor environment sensor failure
E4 outdoor coil sensor fault
E5 outdoor current is too large.
E6 high voltage protection
E7 voltage undervoltage protection
Communication failure between E8 control panel and motherboard.
Fault code of Haier KRS-32N new hidden air conditioner
Displays the reason why the code failed.
E 1 indoor ambient temperature sensor failure.
E2 Indoor air duct or water pipe temperature sensor is open or short-circuited.
E3 indoor and outdoor communication failure
The communication between E4 and the driving board of electronic expansion valve is abnormal.
E5 Abnormal indoor and outdoor communication
E6 indoor unit liquid pipe temperature sensor is open or short-circuited.
Communication failure between E7 controller and motherboard.
E9 outdoor unit failure
Haier air conditioning fault code
Cold storage evaporator F 1 sensor short circuit or open circuit.
F2 ambient temperature sensor short circuit or open circuit
F3 Cold Storage Space Sensor Short Circuit or Open Circuit
F4 Freezing Point Temperature Sensor Short Circuit or Open Circuit
F5 minus 7 degree temperature sensor is short-circuited or open-circuited. 9. Aucma 432 1 Fault codes show priority from top to bottom:
1. The indoor temperature sensor is faulty, and the digital tube displays 0 1.
2. The indoor coil sensor is faulty, and the digital tube displays 02.
3. The system is abnormal and the digital tube displays 03.
4. Refrigeration and frost prevention, and the digital tube shows 04.
5. Heating overload, the digital tube shows 05.
Haier's new air conditioning code in recent two years
1.KF (Slovakia) -25 GW/Hg (Zimbabwe). KF (Slovakia) -35 GW/Hg (Zimbabwe). KF-23GW/HB(ZXF)。 KF-33GW/HB(ZXF)。 KFR-28GW/HB(BPF)。 KFR-35GW/HB(BPF)
Fault-type operation heating and cooling
The indoor ambient temperature resistance flashes abnormally.
The temperature resistance of the inner tube flashes abnormally.
The EEPROM flashes abnormally.
The internal fan turns off and flashes abnormally.
2.KF-50(60.7 1.75) Fat weight per gram (ZXF). KF(Rd)-58(60.68) Length/Width (ZXF). KF-48(58. 68. 7 1) lb/sq ft. KF-48(58. 68. 7 1) Length/Width (XF). KF-58(68.7 1) Length/Width (YF). KFRd-50(60.7 1)LW/V(ZXF)。 KFRd-48(50.58.7 1)LW/Z2。 KF-45(48.58.7 1)LW/Z2。 KF-48(58.68) lbs/km2. KFRd-50(60.7 1)-LW/VA(ZXF)。 KFR-70LW/Z-(S)。 KF Road -48(58.70) Length/Width. KF Road -70 Length/Width (South) KFRD-75LW/@(F)
E 1: indoor ambient temperature sensor is abnormal.
E2: Abnormal indoor pipeline temperature sensor
E6: Pressure protection
E7: Undervoltage Protection
E8: Communication failure between panel and internal unit
Haier 36BP, 50BP air conditioning fault code
The number of times the power indicator light flashes continuously; Causes of indoor unit failure.
1 room temperature sensor related fault
2 indoor coil sensor related fault
4 Heating indoor coil overheating or sensor failure
5 cooling indoor coil or sensor failure
6 CPU is not working properly
7 communication failure
8 Internal fan failure (including Hall element failure)
9 Poor contact of power supply
The number of times the timing indicator (yellow) flashes continuously; Causes of indoor unit failure.
1 IPM module overheating, overcurrent and short circuit
2 outdoor compressor without electricity (current detection coil, compressor open circuit, etc.). )
4 compressor overheating
5 Overcurrent of the whole machine
6 Related parts of outdoor ambient temperature sensor
7 Related parts of outdoor coil sensor
8 CPU failure
10 power supply undervoltage
1 1 Poor power contact.
12 The outdoor coil temperature of the refrigeration unit exceeds 72 degrees.
14 CPU failure
15 CPU works abnormally or the CPU is bad.
Haier KTR- 160W/BPMR air conditioning fault code:
Fault code fault content
1 1 Abnormal motor phase control.
12 indoor unit control is abnormal.
14 inverter overcurrent
17 The current sensor is partially abnormal.
18 outdoor heat exchanger TEmperature sensor te is abnormal.
2 1 abnormal high-voltage switch circuit of inverter compressor.
22 high voltage protection action
93 The circuit of indoor heat exchange sensor TC 1 is abnormal.
94 Abnormal circuit of indoor heat exchange sensor TC2
95 Abnormal indoor and outdoor communication circuit
96 abnormal indoor and outdoor communication address
89 indoor unit overload
Abnormal TA circuit of OC indoor temperature sensor
Contact adhesion of BD Mg 1SW
B9 Abnormal circuit of indoor pressure sensor
The wiring of AB pressure sensor is wrong.
97 centralized control communication circuit is abnormal.
98 abnormal centralized control address setting.
E5 frequency conversion IOL circuit is abnormal.
E6 fixed frequency IOL circuit is abnormal.
E 1 abnormal high-voltage switch circuit related to constant-frequency compressor.
OB drain pump and float switch circuit are abnormal.
B5 Abnormal display of external input
9F Insufficient refrigerant circulation
AE low frequency time-varying compressor exhaust temperature sensor TD 1 protection action
Be protected by low voltage
The circuit of exhaust temperature sensor TD 1 of A0 constant frequency compressor is abnormal.
A 1 circuit of exhaust temperature sensor TD2 of constant frequency compressor is abnormal.
A2 suction temperature sensor TS circuit abnormal
A6 Inverter Compressor Exhaust Temperature Sensor TD 1 Protection Action
Protection Action of Exhaust Temperature Sensor TD2 of A7 Inverter Compressor
B6 Abnormal external interlocking display
9A Indoor unit wiring error.
1D compressor system is abnormal.
1F circuit detected some anomalies.
1C interface substrate circuit is abnormal.
Abnormal PD circuit of A4 high voltage sensor
Low voltage sensor B4 PS circuit is abnormal.
Haier KR-70QW, KF-7 1QW/S, KF- 120QW, KF 125FW maintenance codes.
E0 exhaust system fault
E 1 indoor temperature sensor failure
E2 indoor coil sensor fault
E3 outdoor ambient temperature sensor failure
E4 outdoor coil sensor fault
E5 overcurrent protection
E6 pipeline pressure protection
Communication failure between E7 panel and motherboard.
E8 motherboard and outdoor communication failure
E9 phase sequence fault caused by lack of phase
Haier KFR-28 and 36GW/BPJF split air conditioners
Displays the reason why the code failed.
E 1 indoor ambient temperature sensor failure.
E2 indoor pipeline temperature sensor failure
E8 motherboard power failure or high-voltage dust collection plate sparks.
E9 overheat protection
E07 communication failure
The exhaust temperature of F4 outdoor compressor exceeds 120 degrees.
F6 outdoor ambient temperature sensor failure
F 1 1 compressor or IPM frequency conversion module is abnormal.
F2 1 outdoor defrosting temperature sensor failure
F22 overcurrent protection (AC current detection)
F23 overcurrent protection (DC current detection)
F24 CT disconnection
F25 outdoor exhaust temperature sensor failure
Haier MRV || 5e Central Air Conditioning Fault Code Table
fault detect
1 System fault codes are displayed and distributed as follows:
0-9 Internal machine failure
20-70 Frequency conversion external machine failure
7 1- 100 fixed frequency external machine failure
* Note * According to the settings of rotary switches SW3, SW4 and SW5, turn SW3, SW4 and SW5 to the fault check position, and the fault codes of internal and external machines will be displayed on the digital tube.
According to the displayed fault code, you can find out the detailed fault content, so as to quickly troubleshoot the fault.
2: Fault Code Definition
External frequency conversion host fault code table
The host LED displays the fault code.
20 Outdoor defrosting temperature sensor TE circuit frequency conversion motherboard display 20
Haier MRV || 5e Fault Code of Variable Frequency Central Air Conditioning
Internal machine fault display code
The host computer displays the code, and the wire controller displays the blinking times such as the timing of the LED5 remote control receiving window of the computer board in the code.
0 1 0 1 1
02 02 2
03 03 3
04 04 4
05 05 5
06 06 6
07 07 7
08 08 8
09 09 9
Indoor Code Outdoor Code 20 Fault Details
0 1 indoor ambient temperature sensor TA fault
02 indoor pipeline temperature sensor TC 1 fault
03 TC2 indoor pipeline temperature sensor failure
04 indoor double heat source sensor failure
05 indoor error
06 Communication failure between indoor unit and outdoor unit
Communication failure between indoor unit and line controller
08 indoor unit drainage failure
09 indoor address duplication failed.
10 failed to duplicate the centralized control address.
20 corresponding fault of outdoor unit