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