What does 22 mean?

The system is not reliably detecting a flame when it should be. This can lead to the system shutting down for safety.

• Faulty flame sensor
• Incorrect flame sensor placement
• Issues with the burner assembly
• Control board malfunction

Click steps to track your progress.

1. 1

   Ensure the flame sensor is clean and properly positioned.

2. 2

   Check the burner assembly for any debris or damage.

3. 3

   Verify the wiring to the flame sensor.

4. 4

   Contact an HVAC technician if the flame sensor needs replacement or adjustment.