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