What does CC mean?

The boiler enters a lockout mode, indicated by a red light, and displays fault code CC. This suggests an issue with the LGM (burner control unit).

• Boiler lockout due to an internal fault
• Defective LGM 29.XX (burner control unit)

Click steps to track your progress.

1. 1

   Reset the boiler (power off and on).

2. 2

   If the red light reappears and the boiler goes into lockout mode again, the LGM 29.XX may need to be replaced.

3. 3

   Ensure the boiler is powered off before attempting any component checks.