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