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

What does E4, E5 mean?

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

• Remote controller signal receiving error.
• Noise entered into transmission wire of remote controller.
• Incorrect type of remote controller (e.g., not MA remote controller PAR-21MAA).

Click steps to track your progress.

1. 1

   Check if the remote controller is the correct model (e.g., MA remote controller PAR-21MAA).

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.