While you wait for answers, we may have found some information which could help you.
Success
Message
Greenstar 24Ri boiler, fast flashing - can I reset?
Worcester 30 Cadillac combi boiler won’t fire up and the EA?
How do i stop the time from flashing on the Siemens RDJ100RF?
Remove boiler cover?
Vaillant ecotec 831 plus?
Siemens RDJ10RF thermostat problem?
How to fix my fireplace?
Worcester boiler dripping water?
Boiler cycle?
Remove cover off gas boiler?
Oil fired boiler thermostat?
Vaillant F22 fault?