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