Boiler is not firing up when the hot taps are opened. When boiler is switched on manually I get hardly any flow from taps and the water coming out is boiling, even with temp control turned right down.
Cold water pressure is okay to boiler.
Could a faulty DHW flow switch cause this ?

Col, March 2007

The temperature knob for my radiators seems to keep turning as if something is broken.
What can I do?

Paul, June 2007

flow switch will not stop flow of water. sounds like a block in your dhw heat exchanger

hi-spec plumbing, March 2007