Mitsubishi Electric · MSZ-AP Air Conditioners
The indoor unit's upper lamp blinks 14 or more times, indicating that an abnormality other than the commonly listed issues has been detected by the system. Further investigation is required to pinpoint the exact cause.
Click steps to track your progress.
Ensure all outdoor unit stop valves are fully open.
Turn off the air conditioner at the main power supply breaker.
Wait for at least 5 minutes before turning the main power supply back on.
To get more specific information, activate the 'Failure Mode Recall Function' (refer to page 30 for instructions) to view detailed outdoor unit abnormality history.
If the problem continues, contact a qualified service technician for diagnosis.