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