E28 - Remote controller sensor failure

What does E28 mean?

This error indicates a failure of the sensor located within the remote controller, which is used to measure room temperature.

• Faulty temperature sensor in the remote controller.
• Damage to the remote controller itself.
• Poor connection or communication between the remote controller and the indoor unit.

Click steps to track your progress.

1. 1

   Ensure the remote controller has fresh batteries if it's a wireless type.

2. 2

   Try resetting the remote controller by removing its batteries for a few minutes and reinserting them.

3. 3

   Verify that the remote controller is within range and has a clear line of sight to the indoor unit (if applicable).

4. 4

   If the error persists, the remote controller or its internal sensor may need to be replaced by a technician.