Mini-split
Mitsubishi mini-split error codes
Every Mitsubishi mini-split code in our database, with plain-English meanings, likely causes, and what to try before calling for service. Codes can vary by model and year — always confirm against the legend on your unit or its manual.
- P8 Abnormal pipe temperature (often refrigerant leak) safety
- E6 Indoor/outdoor communication error
- E0 Power source reversed / remote controller issue
- E1 Indoor PCB error
- E9 Indoor/outdoor communication error
- P1 Intake or thermistor sensor fault
- P4 Condensate drain problem
- P5 High condensate level
- P6 Coil freezing or overheating
- U4 Outdoor unit transmission error