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