Recent content by Teucer2000

Re-reading your email makes me think I might have misunderstood. I assumed the flow valve was the one in the airing cupboard which is a Drayton ZA5. Am I right in thinking you are actually talking about a part in the boiler itself?

I guess that I can get an electrician to check out the circuit from the thermostats to the valve to at least narrow down what might cause the valve not to open properly. I don't think it can be sludge as when we drained the boiler to repressurise the expansion vessel, the water seemed pretty...

Thanks for the reply. Can you explain why the boiler seems to be going without any flame and how the boiler flow switch effects this? Does gas only flow after some sort of signal? Ta

Good morning, We have been having some problems with our system. A couple of times recently the heating has been on happily, both downstairs and upstairs circuits, plus hot water. Then I've noticed the radiators going cold. When I checked the boiler, it was making a normal amount of noise...