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Tried this as well, but doesn't make a difference to the upstairs rads. When all downstairs rads are turned off, the boiler does not fire up, however the pump still pumps. Only way to get the boiler to fire up again is to turn at least one of the downstairs rads back on again. And yes all...

Hi Those pictures were taken when the system was hot. I have since looked when the system is cold, and the water level has fallen quite substantially, it is now about 6 inchs below the level in the pictures. By motorised valves I take it you mean the TRV sort? We have just one of those on...

Ok. So, I presumed the plumber had bled all the upstairs rads after he came to do whatever he did. But he had not, so yesterday (with the heating off) I bled them all. Every single one of the 4 rads upstairs were full of air! They took ages to bleed, but eventually I got water coming out. So, no...

Any advice anyone?

Hi and sorry for the late reply. Our landlord sent a plumber round to fix the problem. But it is not fixed. The rushing sounds in the pipes and the banging in the boiler have been fixed, and now we have one radiator upstairs that gets warm (not hot), this is the rad nearest the hot water...

Have done a bit more research. There are two pipes that I can see coming down from the feed and expansion tank. The pipes come down through the airing cupboard. One pipe has a red turnable valve, the pipe is quite narrow, this pipe runs down past the hot water cylinder and then splits off into...

Ok, So the posibility of this blocked pipe is the cause for my upstairs radiators only heating up at the very bottom? Or is the cause a combination of issues? Like I say, downstairs has no problem, apart from the extreme sloshing water noises coming from the boiler and radiators when the...

Hi and thanks for the quick reply. Unfortunately we are currently renting and although I have let the landlord know, I was looking for something I could try in the meantime with the weather as cold as it is. Is there nothing that can be used to flush out the pipe? When you say cold feed, is...

OK here are my details Mexico Super 450FF Conventional floor standing boiler in kitchen (with pump located inside boiler housing) Hot water tank located in bathroom directly above boiler Two tanks in the loft, one smaller than the other. Smaller tank has a ball cystern and an overflow pipe...