TIMER light 3-time flash — Error of signal transmission

What does TIMER light 3-time flash mean?

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.

• Broken signal wire
• Defective in/outdoor unit boards
• Defective power source

Click steps to track your progress.

1. 1

   Turn off the air conditioner at the main power source for a few minutes, then restart it.

2. 2

   Check for any visible damage to the communication cables connecting the indoor and outdoor units.

3. 3

   Ensure there hasn't been a recent power surge or outage that could affect electronics.

4. 4

   If the issue persists, contact your dealer, as this often requires a technician to inspect the wiring and control boards.

5. 5

   Ensure the remote control is working and not causing interference if applicable.