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