I'm having some gremlins with my vokera compact. Ch works fine until turning on hot tap for dhw. Leads to solid red light and boiler shutting down which resets itself after a few minutes and central heating resumes. If I turn the boiler to summer mode and only use if for dhw only the boiler works fine giving as much hot water as you would need.
Any suggestions on what this May be?
Any suggestions on what this May be?