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