Mitsubishi Electric · Air Conditioning
An abnormality other than the listed codes is detected, potentially related to indoor or ambient temperature thermistors. Do not restart operation without repair.
Click steps to track your progress.
Check for leakage points on valves and flare connections.
Check for blockage points in the refrigerant circuit.
Use the failure mode recall function for the outdoor unit to confirm the abnormality.
Refer to thermistor characteristics in the service manual.