Help - water working, but not heating?
My Vaillaint boiler has had 8 engineers out in 7 weeks and still the heating won't switch on. The exchanger has been replaced and the internal thermostat. The heating fires up for 2/3 seconds and then cuts out - does not even reach the pipe from the boiler to the radiators. Please help! The hot water is fine.
Deb, November 2010
