While you wait for answers, we may have found some information which could help you.
Success
Message
Vaillant ecotec 831 plus?
Fan tries to run every 15 seconds then stops immediately?
Worcester Bosch 532/i Combi Boiler?
Remove boiler cover?
British Gas 532/i Gas Combi Boiler?
Vaillant F22 fault?
How do I work my Storad storage heater?
Greenstar 25 combo boiler?
Advice?
Siemens RDJ10RF thermostat problem?
Boiler cycle?
Worcester boiler dripping water?