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