8C — Suction pipe temperature thermistor (TH2) open/short

What does 8C mean?

This error signifies a fault with thermistor TH2, located on the suction pipe. It indicates an open or short circuit in the sensor's wiring or the sensor itself, affecting temperature readings.

• Damaged suction pipe thermistor (TH2).
• Loose or corroded thermistor connection.
• Faulty wiring leading to the thermistor.

Click steps to track your progress.

1. 1

   Turn off the main power to the outdoor unit by switching off its dedicated circuit breaker.

2. 2

   Locate thermistor TH2 on the suction pipe and carefully inspect its wiring connections for any damage or looseness.

3. 3

   Ensure the thermistor probe is securely attached to the pipe for accurate readings.

4. 4

   Power cycle the unit by turning the breaker back on after inspection.

5. 5

   A service technician is typically needed to test the thermistor's resistance and replace it if faulty.