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