Outdoor Board LED1 (green) blinks twice and LED2 (red) blinks eight times alternately - Remote controller transmitting error is detected by remote controller

What does EF mean?

During startup or operation, the outdoor unit's LED1 (green) blinks twice and LED2 (red) blinks eight times alternately, indicating a remote controller transmitting error detected by the remote controller.

• Remote controller transmitting error.
• Noise entered into transmission wire of remote controller.
• Faulty remote controller.

Click steps to track your progress.

1. 1

   Check if the connecting wire of the indoor unit or remote controller is connected correctly.

2. 2

   Check if noise is entering into the transmission wire of the remote controller.

3. 3

   Re-check the error by turning off the main power, waiting, and turning it back on.