Halstead Finest Gold hot water only comes on with all taps on!?
We have a Halstead Finest Gold boiler. The central heating part of which works fine. However, recently the boiler has failed to fire when we turn on a hot water tap. However, if we turn all three hotwater taps on the system, the boiler fires up aftrer a few seconds
Any ideas what needs replacing and how much it should cost?
Toby, September 2009