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.

• Failure of the temperature sensor located in the remote controller.
• Damaged sensor wiring or connector.
• Sensor reading outside operational range.
• Incorrect sensor type installed.

Click steps to track your progress.

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.