F43 - Outdoor defrost sensor abnormality

What does F43 mean?

The sensor responsible for detecting frost on the outdoor unit is faulty or disconnected. The system will stop operation after 5 seconds.

• Outdoor defrost sensor is defective or disconnected

Click steps to track your progress.

1. 1

   Ensure the outdoor defrost sensor is properly connected.

2. 2

   Check the sensor for any ice buildup or damage.

3. 3

   Replace the sensor if it is defective.

4. 4

   Contact a qualified installer or service technician if the issue continues.