Junkers · Cerapur 9000i Boiler
The automatic burner's control unit is reading an incorrect value, which can prevent proper burner operation. This is an interlocking fault.
Click steps to track your progress.
Check the transformer cabling for any issues.
If suspected faulty, replace the transformer and check the operating behavior of the device.
If the problem continues, a qualified technician should investigate the burner automat.