包括三菱在内的空调制造商通常会在其用户手册中列出错误代码，供用户参考。如果您的设备手册已丢失，请查看下方列表，了解各型号三菱空调的错误代码。
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三菱4位错误代码
- 0403: Serial communication error
- 0900: Test run
- 1102: Discharge temperature fault
- 1111: Low pressure or temperature fault
- 1112: Low pressure or temperature fault
- 1113: Low pressure or temperature fault
- 1202: Preliminary fault to 1102
- 1204: Preliminary fault to heat exchanger gas temperature sensor
- 1205: Preliminary fault to thermistor (TH5)
- 1211: Preliminary fault to thermistor (TH2)
- 1214: Preliminary fault to thermistor (THHS)
- 1216: Preliminary fault to thermistor (TH7)
- 1217: Preliminary fault to thermistor (TH8)
- 1219: Preliminary fault to thermistor (TH9)
- 1221: Preliminary fault to thermistor (TH6)
- 1243: Preliminary fault to thermistor (TH10)
- 1301: Low pressure fault
- 1302: High pressure fault
- 1368: Pressure sensor fault (PS1)
- 1370: Pressure sensor fault (PS3)
- 1402: Preliminary fault to 1302
- 1500: Refrigerant overcharge
- 1501: Compressor shell overheating
- 1505: Abnormal suction pressure
- 2500: Drain sensor submergence
- 2502: Drain pump fault
- 2503: Drain sensor fault
- 2600: Water leak
- 4100: Compressor overcurrent protection
- 4101: Compressor overcurrent protection
- 4102: Open phase
- 4106: Transmission power supply fault
- 4108: Overcurrent protection on DOL compressor
- 4115: Power supply signal sync error
- 4116: RPM error / Motor error
- 4124: Thermal switch (49C) open circuit
- 4210: Compressor overcurrent problem
- 4220: Abnormal bus voltage
- 4225: Low bus voltage
- 4230/4260: Heatsink overheat protection activated
- 4235: Fan inverter heat sink overheating protection
- 4240: Overload protection activated
- 4245: Overcurrent protection; Possible ACCT current sensor fault
- 4250: Overcurrent protection activated
- 4255: Outdoor unit fan error
- 4260: Preliminary inverter heat sink overheating protection
- 5101: Temperature sensor fault
- 5102: Return air thermistor fault
- 5103: Thermistor fault at indoor or outdoor unit
- 5104: Thermistor fault at indoor or outdoor unit
- 5105: TH5 open or short circuit
- 5106: TH6 open or short circuit
- 5107: TH7 open or short circuit
- 5108: TH8 open or short circuit
- 5109: TH9 open or short circuit
- 5110: Outdoor unit inverter heat sink thermistor error
- 5111: TH 11 open or short circuit
- 5112: TH10 open or short circuit
- 5113: TH open or short circuit
- 5114: TH open or short circuit
- 5115: TH15 open or short circuit
- 5116: TH16 open or short circuit
- 5201: Pressure sensor fault
- 5202: Pressure sensor fault (PS2)
- 5203: Pressure sensor fault (PS3)
- 5300: A-control UH fault
- 5301: Current sensor fault
- 5401: Temperature sensor fault
- 5701: Loose float switch
- 6201: Remote controller issue
- 6202: Transmission processor hardware error
- 6600: Address overlap
- 6601: Polarity setting error
- 6602: Transmission processor hardware error
- 6603: Transmission line busy
- 6606: Communication fault
- 6607: No ACK
- 6608: No response
- 6700/6701: Communication error between R22 type unit and M-Net circuit
- 6702: Two or more R22 type units connected to M-Net circuit with the same address
- 6751: R22 R/A thermistor fault (P1)
- 6752: R22 frost protection at indoor unit (P6)
- 6753/6758: Communication error between indoor and outdoor unit
- 6754/6755: R22 drain fault (P5)
- 6756/6766: R22 frost protection at indoor unit (P6)
- 6757: System error
- 6761: R22 R/A thermistor fault (P2)
- 6762: R22 TH2 fault check resistance (P2)
- 6763/6767: R22 communication error between indoor and outdoor unit
- 6764: R22 drain fault (P4)
- 6831/6834: MA controller signal reception error
- 6832/6833: MA controller comms fault
- 6840: A-Control E6/E8 fault
- 6841: A-Control E7/E9 fault
- 6844: A-Control EA fault
- 6845: A-Control Eb fault
- 6846: A-Control E6 fault
- 7100: Total capacity error
- 7101: Capacity code setting error
- 7102: Wrong number of connected units
- 7105: Address setting error
- 7106: Attribute setting error
- 7107: Port setting error
- 7110: Signal transmission error
- 7111: Remote controller sensor fault
- 7113: Function setting error
- 7117: Model setting error
- 7130: Incompatible unit combination
三菱空调错误代码
- E0/E3: Remote controller transmission error
- E1/E2: Remote controller control board error
- E4: Remote controller signal receiving error
- E6/E7: Indoor/outdoor unit communication error
- E8/E9/EC: Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit)
- EE: Communication error between indoor and outdoor units
- Fb: Indoor unit control system error (memory error, etc.)
- FC: Nonvolatile memory data
- Fd: Different voltage
- P1: Intake sensor error
- P2/P9: Pipe (Liquid or 2-phase pipe) sensor error
- P4: Drain sensor error
- P5: Drain pump error
- P6: Freezing / Overheating safeguard operation
- P8: Pipe temperature error
- PA: Forced compressor error
- Pb: Indoor fan motor issue
- PL: Outdoor refrigerant system error
- U1/Ud: Abnormal high pressure (63H worked) / Overheating safeguard operation
- U2: Abnormal high discharging temperature / 49C worked/insufficient refrigerant
- U3: Discharge temperature thermistor
- U4: Issue with defrost thermistor, fin temperature thermistor, P.C. board temperature thermistor, ambient temperature thermistor, or outdoor heat exchanger temperature thermistor
- U5: Abnormal temperature of heat sink
- U6: Compressor overcurrent interruption / Abnormal of power module
- U7: Abnormality of superheat due to low discharge temperature
- U8: Outdoor unit fan safeguard stop
- U9: UH Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit / Current sensor error.
- UE: Stop valve (close valve)
- UF: Compressor overcurrent interruption (When compressor locked)
- UP: Compressor overcurrent interruption
三菱 Mr. Slim-A 控制错误代码
- A0: Duplicate address; Lossnay units attached using the same address
- A2: Hardware error transmission processor
- A3: No data transmission for 8 minutes due to busy line
- A6: Communication error with processor; Lossnay address not being transmitted
- A7: No ACK signal
- A8: No M-Net response
- E0: Remote control transmission error (signal receiving error)
- E0-E5: Signal error between remote control and indoor units
- E1: Remote control communication issue
- E2: Remote control transmission error
- E3: Remote control transmission error (transmitting error)
- E3/E5: Remote control communication/receiving error
- E4: Remote control transmission error (signal receiving error)
- E5: Remote control transmission error (transmitting error)
- E6: Indoor and outdoor unit communication error
- E6-EF: Communication error between indoor and outdoor units
- E7: Indoor and outdoor unit communication error
- E8: Indoor and outdoor unit communication error
- E9: Indoor and outdoor unit communication error
- EA: Miswiring of indoor/outdoor unit (Exceeded the number of indoor unit connections)
- EB: Miswiring of indoor/outdoor unit (Miswiring disconnection)
- EC: Start-up time over
- ED: Serial communication error between boards on outdoor unit due to incorrectly fitted M-Net interface board
- EF: M-NET transmission error
- Ed: Serial transmission error
- F1: Reverse phase detection
- F1-FA: Outdoor unit error
- F2: L3 open phase detection
- F3: 63L connector open
- F4: 49C connector open
- F5: 63H connector open
- F7: Reverse phase detection circuit (P.C. board) fault
- F8: Input circuit fault
- F9: Connector 2 or more open
- FA: L2-phased open phase or 51CM connector open
- LED E0: Diagnosis of malfunction Transmitting / Receiving signal error
- LED Flash: Check code display
- LED LD1: LED ON Compressor directive / LED Flash Reverse phase detect
- LED LD2: LED ON Heating directive / LED Flash Open phase detect
- LED LD3: LED ON During 63H1 operation / LED Flash Pipe sensor short/open
- LED LD4: LED ON Compressor ON / LED Flash High pressure switch (63H2) operation
- LED LD5: LED ON Outdoor fan ON / LED Flash Over current relay (51CM) operation
- LED LD6: LED ON 4-way valve ON / LED Flash Thermal switch (26C) operation
- LED LD7: LED ON Bypass valve ON / LED Flash Thermistor (TH3) overheat protection
- LED LD8: LED ON Crankcase heater ON / LED Flash Defective input
- LED ON: Operation status
- LED P1: Intake air sensor abnormal
- LED P2: Pipe sensor abnormal
- LED P3: System error (transmitting/receiving signal)
- LED P4: Drain sensor abnormal
- LED P5: Malfunctioning of the drain overflow protecting mechanism
- LED P6: Abnormality of the coil frost / overheating protection mode
- LED P7: System error (address)
- LED P8: Outdoor unit malfunction
- Mr.Slim K-control: PUH-EK Outdoor unit
- P1: Abnormality of room temperature thermistor (TH1)
- P2: Abnormality of pipe temperature thermistor/liquid (TH2)
- P4: Abnormality of drain sensor (DS)
- P5: Malfunction of drain-up machine
- P6: Freezing/overheating protection detect
- P8: Abnormality of pipe temperature
- P9: Abnormality of pipe temperature thermistor/condenser/evaporator (TH5)
- U0-UP: Outdoor unit error
- U1: Direct cut operation
- U2: Inner thermostat (49C) operation
- U3: Discharge thermistor short/open
- U4: Outdoor thermistor short/open
- U5: Inverter heat sink overheating
- U6: Compressor over current
- U7: Low discharge superheat (TH4)
- UA: Compressor overcurrent (terminal relay operation)
- UE: High pressure error (ball valve closed)
- UF: Compressor overcurrent (operating locked) cut off
- UH: Current sensor error
- UL: Abnormal low pressure
- Ud: Overheat protection
三菱 Mr. Slim 错误代码（薄膜型遥控器）
| Code | Possible Cause |
|---|---|
| EO | During individual unit control: Bad contact of transmission wire Signal transmitting/receiving circuits are abnormal |
| P1 | Bad contact of thermistor Damaged thermistor |
| P2 | Bad contact of thermistor Damaged thermistor |
| P3 | Bad contact of transmission wire Signal transmitting/receiving circuits are abnormal Wrong operation due to noise wave emitted by other appliances |
| P4 | Bad contact of transmission wire Damaged thermistor |
| P5 | Malfunction of drain pump Damaged drain sensor |
| P6 | Short cycle of air cycle Dirty air filter Damaged fan Abnormal refrigerant |
| P7 | Wrong address-setting Signal transmitting/receiving circuit of remote controller is abnormal Wrong SW6-setting |
| P8 | Wrong wiring of indoor/outdoor connecting wire Reversed phase Protection device is working Damaged outdoor coil thermistor |
