Choose your Mitsubishi Electric appliance
About Mitsubishi Electric
Mitsubishi Electric is a Japanese manufacturer and one of the major names in ductless mini-split air conditioners and heat pumps. Its indoor units typically show faults as a blinking operation light or as a code read through the remote or wall controller, and codes differ between product series.
Mitsubishi Electric air conditioner error codes
- Blinking OPERATION lightWall unit's indicator light is flashing
- P1Room air temperature sensor fault
- P2 / P9Indoor coil temperature sensor fault
- P4 / P5Drain sensor or drain pump problem
- PAShut down to prevent a water leak
- P6Freeze or overheat protection
- P8Pipe temperature error
- PbIndoor fan motor error
All 18 Mitsubishi Electric air conditioner codes
Before you start
- Find your model number. It's on the rating label, usually inside the door or lid, on the frame, or on the back or side panel.
- Try a reset. Unplug the appliance or switch off its breaker for 10 minutes. Many codes are one-off glitches.
- Stay safe. Never bypass safety switches or work on live wiring, gas or refrigerant lines. Each guide tells you when to call a technician.