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