Mitsubishi Electric · MSZ-EF VE Air Conditioners
The left Operation Indicator lamp flashes three times, followed by a 2.5-second off period. This indicates that the rotational frequency feedback signal from the indoor fan motor is not being emitted during operation, meaning the fan motor is not functioning correctly or has stopped.
Click steps to track your progress.
Turn off the main power supply to the unit, wait for a few minutes, then turn it back on to reset the system.
Check for any obvious obstructions to the indoor fan blades, such as dust buildup or foreign objects, and carefully remove them if found.
Ensure the air filter is clean and not restricting airflow, as this can strain the fan motor.
If the issue persists, refer to the 'Check of indoor fan motor' section (10-6 in the full manual), which likely requires a technician to diagnose and repair.