What does C9 mean?

This indicates a problem with the sensor that measures the temperature of the air being drawn into the unit. This reading affects performance.

• Faulty suction air temperature sensor
• Damaged wiring to the sensor

Click steps to track your progress.

1. 1

   Check the wiring connected to the suction air temperature sensor for any damage or loose connections.

2. 2

   Ensure the sensor is properly positioned and not obstructed.

3. 3

   If the sensor appears intact, professional diagnosis may be needed.