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.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Change the refrigerant address to a separate setting.

2. 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.