Heating & cooling
Mitsubishi Electric error codes
Mitsubishi Electric Mr. Slim (P-Series) check codes and blink counts, from Mitsubishi Electric's malfunction-diagnosis sheet. Models vary, so match your manual. Also covers Mitsubishi, Mr. Slim.
Mitsubishi Electric mini-split codes (17)
- P8Pipe temperature error
- E6Indoor/outdoor communication error
- P1Intake (room) sensor error
- P2Pipe sensor error
- P5Drain pump error / float switch
- P6Freeze or overheat protection
- EEIndoor/outdoor combination error
- E4Wired remote communication error
- PBIndoor fan motor error
- PLRefrigerant circuit abnormal
- U2High discharge temperature / low refrigerant
- U1High pressure / overheat protection
- U3Outdoor thermistor open/short
- UPCompressor overcurrent
- U8Outdoor fan protection stop
- U5Heat sink temperature abnormal
- U9Voltage or current sensor abnormality
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