Condensate has been detected in the combustion chamber. The burner operation is interrupted.
Possible cause
Condensate in the combustion chamber due to a blocked condensate discharge
Measure
1. Check and, if required, clean the condensate discharge pipe including the siphon.
2. Check the combustion chamber (electrodes, insulating mats, burner).
3. If required, replace the insulating mats in the combustion chamber.