Recent content by dpravo

Ok.. update - the general behaviour of the system seems to have fallen in line and is behaving ( did i just jinx it?). i used a load of hot water, then after some time, maybe 5 mins, the boiler fired up and reheated the cylinder. After a little while the pump switched off. Then to test it wasnt...

So circuit testing all the various bits is where i would struggle @Madrab I know how to test somethings eg the cylinder stat, i did that yesterday with my multimeter to make sure it was off before wiring in the new stat, but all the other components i don't really know where to test. The water...

Many thanks for the reply @Madrab and I think this is where I will struggle - the testing - beacuse i can only really do a superficial level of testing, so it might be time to get a pro on-site. thanks again

Update…so, I spent a bit more time analysing the behaviour of my hot water as it just wasn’t quite right.. What I was seeing was the boiler shutting off, pump stopping and zone valve closing before the water in the hot water cylinder was reaching the desired temperature (approx 62 degrees). It...

Got it - thanks very much for all the excellent information! Much appreciated.

thank you @Madrab - one other query.. so when the stat is calling for heat, and the zone valve is open, and the pump is pumping and the boiler is firing I notice that the boiler will at some point stop actively firing/heating and then after some period of time it will fire back up - this fire up...

Ok, that's really interesting. I have not touched the boiler thermostat. Thanks for the detailed explanations @stem - I really appreciate it. Am I right in saying that in theory I should be seeing this same behaviour when the heating is on? And the fact that I don't (i.e. the heating zone valve...

Thank you for the replies so far. I am getting hot water from the taps. So if I'm interpreting your comments correctly @stem then the zone valve opening and closing, and the pump turning on and off, all whilst the programmer is 'on' is normal behaviour? If so, that is great. As for something...

I have an S plan system and over the last few days i've noticed strange behaviour which I hope someone can help diagnose.. When the hot water comes on (typically on a timer), the h/w zone valve opens, the pump starts and then the boiler fires up.. after some time, with the hot water still 'on'...