Hello again and thanks for all your suggestions and advice. I think the problem is now cured. Basically, I took the "box" off the front of both two port valves and tried to move the spindles on the valve with pliers - the heating one moved very freely, but the hot water one was much harder to...
Hi, I'm still a bit confused by what you mean by 2 port valves, but if you mean the two electric valves (one for heating, one for hot water), they're Drayton Zone Valve Actuator, Actuator Code ZA5
Thanks daWilko - can you explain this to me in a little more detail please? Which valve is sticky and how would this make the system run all night despite the controller being off?
Good Morning All,
Further to my previous post about my pump running all night, I've now done some further investigation at 3am this morning and realised it's different than I originally thought.
We have a Glow-worm Ultracom 30hxi boiler that feeds our central heating and hot water. It’s...
After some more investigation last night, I've realised things aren't quite as they seemed in my original post. I'm therefore going to close this post and start afresh.
Thanks for the prompt response steadyon. I do have two separate motorised valves that sit just below the pump, but I don't know what the auto bypass is or looks like - or how it can go wrong?
Hello again – second post, but another plumbing problem – this time about our central heating.
We have a Glow-worm Ultracom 30hxi boiler that feeds our central heating and hot water. It’s controlled by a Drayton Lifestyle controller. The pump is a Grundfos Type UPS 15-60 130 Part number...
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