Sorryi meant Central Heating has no problem at all, When i draw large amounts of hot water it triggers cut out which will not reset. I phoned baxi and the said plate in heat exchange may need cleaning with Sentinel X400 which is now in system. Let it run for 6 hours, but again it has shut DHW...
Central heating runs all the time but once hot water is running for more than 15mins (we have a Large Bath) Boiler cuts out and i have to wait till it cools to reset Any ideas, i have changed all thermostats still no luck