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?
Worcester boiler dripping water?
Boiler cycle?
Siemens RDJ10RF thermostat problem?
Oil fired boiler thermostat?
How do I work my Storad storage heater?
Remove boiler cover?
How to fix my fireplace?
Greenstar 24Ri boiler, fast flashing - can I reset?
Vaillant F22 fault?
Remove cover off gas boiler?
Vaillant ecotec 831 plus?