While you wait for answers, we may have found some information which could help you.
Success
Message
Vaillant ecotec 831 plus?
Worcester Bosch 532/i Combi Boiler?
British Gas 532/i Gas Combi Boiler?
Boiler cycle?
Worcester boiler dripping water?
How do I work my Storad storage heater?
Remove boiler cover?
Greenstar 25 combo boiler?
Advice?
Siemens RDJ10RF thermostat problem?
Fan tries to run every 15 seconds then stops immediately?
Vaillant F22 fault?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home heating systems.