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