Error 39 — Outdoor condenser temperature sensor TC abnormal

What does 39 mean?

There is an electrical failure with the sensor measuring the outdoor coil's condensing temperature. The sensor is connected to the PCB.

• Sensor short circuit
• Sensor open circuit
• Loose sensor connection
• Defective sensor

Click steps to track your progress.

1. 1

   Check the connection of the outdoor condenser temperature sensor (TC) to the PCB.

2. 2

   Inspect the sensor wiring for damage.

3. 3

   Use an ohmmeter to test the sensor's resistance against the temperature resistance table.

4. 4

   Replace the sensor if it is faulty.