Mitsubishi Electric · MSZ-AY Air Conditioners
The upper lamp on the indoor unit blinks 5 times. This indicates an abnormality in the outdoor unit's power system, potentially affecting components like the inverter or compressor.
Click steps to track your progress.
Turn off the unit's main power supply, wait a few minutes, then turn it back on to see if the issue resolves.
If the problem persists, contact a service technician to check the outdoor unit's power system, inverter, and compressor.
Do not attempt to operate the unit if the problem continues, to prevent further damage.