Recent content by billybear

Too late re the bleeding - tried both - forum instructions tend not to cover the 'obvious'. Will redo in off state, but didn't seem to make any difference either way. Letting air in for draining - makes sense, should have thought of that. 'Electric valves'? Have two motorised valves - one...

I continue to fret at the problem. I'm trying to get as much straight in my mind as I possibly can before doing anything drastic. I have checked other topics but not found precise answers to my questions – please bear with me. I've brought the system up to full working pressure. Bled a little...

Thanks oilman - flattery will get you anywhere! Keeping warm running up and down stairs between PC and boiler... Expansion vessel releases air, not water. Factory precharged to 1.5bar. Seems like a decent pressure as far as I can tell just by pushing the valve although of course there's still...

Yes - it's just slow - shows the virtue of patience. As for the plumber, well he works for the builder. And the builder and I don't talk anymore for all the usual reasons associated with big building jobs, like taking 20 months for a job that was contracted at 8 months. I've done various...

Edited away to stop site stutter...

Oilman: the pressure now, very cold is 0.6 bar. The red line is set around 1.25, but it has been losing pressure very slowly. I've sorted odd small leaks around the manifolds (it's an underfloor system) and the two towel rails over the 18 months since it was installed. They were part of the...

My pump, a Grundfos UPS 25-80 130, started making a dreadful noise Sunday. At first I thought it had seized, but now begin to suspect that it's full of air. It seems to be turning but whirrs and gurgles very loudly, sometimes racing and sometimes just making bubbling noises. The needle of the...

Well OK, you don't need to tell me twice! I'll leave it for the moment and see whether the promised plumber turns up tomorrow. Donnap seems to have gone away - I was only trying to be helpful as everyone more knowledgeable than me (not hard, at least for plumbing) seemed to be ignoring her...

How can I tell? Symptoms are as described in my first reply - I had to turn it off to stop the infernal noise (this echoes through the air inlet and must have been waking the whole street - not a good idea at 5.30 on Sunday morning if you want to stay on good terms with the neighbours) which...

Well I've just got the screw out and had a look. All it did was pee water at me till I shut off the isolation taps. Inside isn't much except a little hole. Pump is a Grundfos UPS 25-80 180 and I wanted to check it was/was not turning OK before launching into replacement, but there's no...

Hi Sorry if this is the blind leading the blind but you seem to be desperate so maybe it will help a bit. I've had a very similar problem - 05.20 Sunday morning. Still waiting for the plumber to arrive. I diagnosed mine as a seized pump. It starts up with a bang, woofs a few times very...