Search results

They haven't seized - I can open and shut both of them - and the glands don't leak. Which recalls the other poster's point: If you should always drain the system before replacing a pump, what is the point of having isolator valves at all? Why not just connect the pump direct to the pipes...

They haven't seized - I can open and shut both of them - and the glands don't leak. Which recalls the other poster's point: If you should always drain the system before replacing a pump, what is the point of having isolator valves at all? Why not just connect the pump direct to the pipes...

I am prepared for some leakage from the isolator valves, but I am hoping that it will be just a dribble at most (why would people fit them if they leak more than that?). So hopefully I can whip out the old pump and bang in the new one with only a small amount of mess ... at least that's the...

"Malc C: Popped in to Screwfix lunchtime and picked up a terrier pump for £35 (OK may not be the best but it's doing the job and quietly too). Only took half an hour to swap out. " What did you use to undo the nuts? None of the shops round here supply a spanner big enough ... do Screwfix...

Just to round this off - I finally got around to fixing it, and not before time, because the thing was cluck-clucking all day long like an old hen and I thought it was going to pack up. I orderd a main PCB from one of the online catalogues - gasbits.com - and fitted it myself. Now works like a...

Also Tony, on another interesting thread where the owner's problem was a bit like mine (//www.diynot.com/forums/viewtopic.php?t=116921) you said: "The temperature sensor on the front of the boiler must be packed with thermal transfer paste and few people do that when removing or replacing...

TONY: I think you are missing the action! The cylinder temperature is one value and the boiler temperature is another. GK: I know. But the boiler is being fed with water from the HW tank heat exchanger, so if that water is already very hot it might tend to make the boiler overheat when the...

[spacethegas]far easier to change the pump head & then you can inspect the impeller assembly as it may well give you a clue as to the condition of the circulating system water & hence why the pump went bang.[] GK: You're probably right. I just tried an experiment. With the HW in the tank up...

Tony: "I go to lots of sludged up systems which were correctly installed but the tenants just leave the filling valve letting by and thus resulting in a totally sludged up system. A few owners do that as well." GK: Probably me! What do you mean? spacethegas: "could you explain to me what...

Alan: "If the system had been PROPERLY flushed when the boiler was fitted 4 years ago NO WAY would it need doing again 4 years later." GK: Well maybe it doesn't. Just guessing. I think the guy who put the boiler in was competent enough. Maybe it's the pump. Space: "there is no need to reduce...

[Why is everything a circuit board failure?] :) Good question. I suppose it's because the circuit board controls everything, so almost any fault *could* be the circuit board - or so you'd think if you did what I did and followed the fault-finding flow diagram in the Potterton service manual...

My problem is rather similar to one posted before, but not entirely. When a call for heat comes and the water pump switches on, the boiler lights and burns for one or two minutes, then stops. You hear a repeated clicking for a further (say) 20 secs, then silence. Pump continues to run, and...