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