Error 10 — Defrost sensor fault

What does 10 mean?

There is an electrical failure with the sensor used to measure the outdoor coil temperature during the defrost cycle. This sensor connects to the PCB at Plug CN-14.

• Loose sensor connection
• Open or shorted sensor
• Sensor is out of calibration
• Faulty sensor wiring

Click steps to track your progress.

1. 1

   Check the connection at Plug CN-14 for the defrost sensor.

2. 2

   Inspect the sensor wiring for damage.

3. 3

   Test the sensor resistance against calibration tables.

4. 4

   Replace the sensor if faulty or out of calibration.