I have a HE100 Baxi on the kitchen wall - its a combi condenser. It seems to be on all the time - i have had to get the main thermostat to zero and the radaitor ones to zero as well. The clock is going round normally on the boiler timer but the system does not seem to take notice of whether i leave boiler timer on all time, twice a day or off... any idea what wrong and how much it would cost to rectify.
look like timer is not , reposing, change timer get same one
is it external or internal when you take wire out note down which one goes where timer cost 30