Junkers · Cerapur 9000i Boiler
The ignition device has been active for an excessively long period, which can indicate an issue with ignition or flame detection.
Click steps to track your progress.
Check the wiring and plug connection of the burner control unit for any issues.
Inspect the ignition device itself for proper function.
If the issue persists, a qualified technician should investigate the ignition system.