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