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