Recent content by Robinma2000

So previously I changed the flow sensor and didnt make a good job of it. I either misfitted it or it was faulty part. Basically it wasnt sensensing any flow, but the result was the ignitors were not firing. When I put the old one back it started firing again. So my conclusion was the flow...

Makes sense, but what energises the motor? How does the boiler know the hot water is being called for?

What causes the diverter valve to operate? I have replaced mine a couple of times, but the rads still getting warm when I draw hot water. I assume the diverter valve is not operating. But what triggers it to shut off?. I'm looking for a problem earlier on in the process I guess?