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