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?
British Gas 532/i Gas Combi Boiler?
Siemens RDJ10RF thermostat problem?
Greenstar 25 combo boiler?
Boiler cycle?
Worcester Bosch 532/i Combi Boiler?
Vaillant F22 fault?
Advice?
Remove boiler cover?
How do I work my Storad storage heater?
Worcester boiler dripping water?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home heating systems.