MHI · Air Conditioning
The TIMER light flashes three times, indicating an error in signal transmission between the indoor and outdoor units. This means the units are not communicating correctly.
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Turn off the air conditioner at the main power source for a few minutes, then restart it.
Check for any visible damage to the communication cables connecting the indoor and outdoor units.
Ensure there hasn't been a recent power surge or outage that could affect electronics.
If the issue persists, contact your dealer, as this often requires a technician to inspect the wiring and control boards.
Ensure the remote control is working and not causing interference if applicable.