Remote Controller Signal Receiving Error

What does E5 mean?

The remote controller receives transmitted data at the same time, compares it, and detects different data 10 continuous times, or the indoor controller board performs the same comparison and detects different data 10 continuous times. This can be due to multiple remote controllers set as 'main', a remote controller connected to multiple indoor units, repeated refrigerant addresses, a defective transmitting/receiving circuit on the remote controller or indoor controller board, or noise in the remote controller transmission wire.

• Indoor unit fails to receive signals from the remote controller.
• Damaged or disconnected wiring between remote controller and indoor unit.
• Faulty indoor unit communication interface.
• Interference on the remote controller signal.

Click steps to track your progress.

1. 1

   Set one remote controller to 'main' and any others to 'sub'.

2. 2

   Ensure the remote controller is connected with only one indoor unit.

3. 3

   Change the refrigerant address to a separate setting.

4. 4

   Diagnose the remote controller: If 'RC OK' is displayed, turn power off/on; if abnormal again, replace indoor controller board. If 'RC NG' is displayed, replace the remote controller. If 'RC E3' or 'ERC 00-66' is displayed, noise may be the cause.