Remote Controller Sensor Failure

What does E28 mean?

The sensor within the remote controller has failed, leading to incorrect temperature or operational readings. This affects the indoor unit's ability to control room temperature accurately.

• Remote controller's internal temperature sensor (e.g., P12) is defective.
• Remote controller communication failure.
• Loose connection between remote controller and indoor unit.
• Remote controller firmware error.
• Power supply issue to the remote controller.

Click steps to track your progress.

1. 1

   Verify the remote controller is receiving power and displaying correctly.

2. 2

   Test the remote controller's sensor functionality or replace with a known good unit for diagnostic purposes.

3. 3

   Inspect the remote controller's connection to the indoor unit for security and continuity.