Remote Controller Sensor Failure

What does E28 mean?

The temperature sensor integrated within the remote controller has failed. This means the system cannot accurately read room temperature from the remote controller, impacting overall temperature control and comfort.

1. 1

   Verify the remote controller is receiving power and displaying information correctly.

2. 2

   Temporarily bypass the remote controller sensor by selecting an alternative room sensor setting on the indoor unit (e.g., return air sensor) if available via DIP switch or parameter.

3. 3

   If sensor failure is confirmed internally, replace the remote controller unit.