What does 23 mean?

The temperature sensor within the Inverter Power Module (IPM) has detected an overheat condition. This can be caused by overcharging or a dirty system.

• Overcharge of refrigerant
• Excessively clogged coil (indoor or outdoor)
• Sensor open or shorted
• Non-condensable gases in the system

Click steps to track your progress.

1. 1

   Check for refrigerant overcharge.

2. 2

   Clean the indoor and outdoor coils thoroughly.

3. 3

   Inspect the IPM temperature sensor and its wiring.

4. 4

   Ensure the system is free from non-condensable gases.