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