Red Off, Green 5 Flashes (Single System) — Forward Communication Failure In Use

What does Red Off, Green 5 Flashes mean?

The green LED light on the indoor unit flashes five times while the red LED is off. This indicates a failure in the forward communication between the indoor and outdoor units during ongoing operation.

• Degradation or intermittent fault in the communication cable.
• External electrical noise impacting the system.
• Control board issue preventing stable communication.

Click steps to track your progress.

1. 1

   Perform a hard reset by turning off the circuit breaker for the air conditioner for 30 seconds, then reactivating it.

2. 2

   Minimize potential sources of electromagnetic interference around the unit.

3. 3

   Ensure the communication wires are securely connected and free from stress.

4. 4

   Contact customer support if the error reappears consistently.