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