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