Search results for query: blocked cold feed

What is the best way to check for a blocked cold feed on a vented system (S plan)? Also what is the best way to clear the blockage? Cheers

if for eg your top rads when bled don't disperse any water and are cold at the bottom you are likely to have a blocked cold feed i believe. is a good way of curing this by: flushing then system through and cleaning down the cold feed with a long rod to move/budge any sedimenet, etc...? or is...

Does this sound like a blocked cold feed ? I've not been able to track the pipework yet to mag test it but. Potterton 80 downstairs, pump upstairs about the level of bottom of rads, F&E tank in loft. Boiler started resetting, it was hot , pump was hot but rads were cold and the header tank...

...I opened the upper valve I should get clear water from the F&E tank? No water, so I am assuming that the pump failed because of a blocked cold feed, and the cold rad because the pump was beginning to fail? So, with the pump removed, can I poke up the cold feed pipe to try and unblock? Or...

blocked cold feed - after reading the FAQs and from what I know already - if when venting radiators (usually top floor/higher ones) water doesn't come out with any force - and can also be dark in colour and thickish. But does the F & E cistern height have anything to do with this .... and is...

...posts say if you have a radiator that needs constantly bleeding and lots of ‘whooshing’ noise near the pump it is likely there is a blocked cold feed. Pump is only 4 years old btw. I have an open vented system and yes you’ve guessed it a bathroom radiator that constantly needs bleeding and...

Was wondering the other day, why it is that cold feeds block with magnetite in that location? What is it about the tee and its position that attracts the magnetite build up? Why doesn't the magnetite cause regular blockages in other places/tees? :?

Hi Guys, House with indirect cylinder etc on the ground floor, radiators on ground floor getting hot, as does the water in the cylinder, the upstairs radiators are the problem, with none of them getting warm, tried to bleed radiators but nothing happened. turned valves of to one radiator...

I cleared a blocked cold feed today. 35mm! :shock: Do I hold the record? David

...all clogged up and I doubt it's working. From reading posts here I gather that one cause of air in the system can be a partially blocked cold feed, so I'm trying to work out if that's the problem. I held a jar of water up to the vent pipe over the F&E tank, and when the pump came on it took...

Hi, I recently moved house and a few days ago my central heating broke down. Even since I moved in the system was quite noisy, but it had been getting louder over the last few weeks until two days ago when it would start up but after the boiler had fired up it would cut out after more than only...

Hi All   I have a problem i seem to have 3 stopcocks one under the kitchen sink for the cold supply, 1 in the bathroom for the cold, and one in the airing cupboard for the hot. All three have seized so i want to replace them. but i'm not sure which stopcock would isolate my flat, i know i can...

The cold water feed to my open vent C/H system was partially blocked, but I managed to free it by pushing air through from the tank in the attic. Checking with a magnet I find that there is considerable sludge build up in the 22mm pipe that connects the T from the cold water feed to the C/H...

hi. have a prob with the cold water feed form the loft to the boiler.we took of a rad to tile behind.after putting it back on. the boiler making a woshing sound,rads down stairs are fine.up stairs hot at bottom cold at top. manweb engineer came out and has said the cold feed from the loft to...

Hi, I hope somebody will be able to help, the central heating at my grandmothers house has just stopped working, typical that it happens when its so cold! I believe it i an open vented system with a back boiler. From reading a few threads my guess is that the feed pipe is blocked (or...

Sunday morning woke to no CH. pump had seized. Bought new pump, fitted it, it works but can\\\'t bleed upstairs rads, or pump. Checked header tank, eventually drained down system header tank still full. tied up ball cock, removed pump, opened valves nothing. tried pressurising cold feed pipe...

Hello again I decided that the previous problem with my system had to be the pump (see my previous post 3 upstairs radiators working, the rest are cold) - replaced it eventually with much swearing! I had to drain the system to do it 'cos the gate valves were stuck. Now when I try to refill...

I would like to thank the forum members for pointing me in the right direction after trawling through numerous threads regarding blocked cold feed , pumping over etc . I have a potterton netaheat 10:16 and we have had a problem with the F&E tank filling with hot water (pumping over). We tried...

...taking longer to heat up. I suppose this has been gradual but now is time to act I think. I have read about possibly having a blocked cold feed (from this site). After looking into my F & E cistern I have noticed a bit of gooey sludgey type mess at the bottom (not too much but a bit)...

I think I have the dreaded blocked cold feed. I have read the FAQs and still have a few q's: i have vented the higher level radiators and no water, well a little dribble then stops. What sort of magnet can i use to detect excatly where the blockage in the pipework is? how comes the hot water...