I am Cold

girlsmum

ok my heating has been fine then i have had some work done in my bathroom which has meant some pipes moved for my radiator, now the heating is toasty upstairs and not downstairs, we have tried all the normal things like bled them turned them off upstairs to force is downstairs turned one on at a time one at a time they will get warm but not hot, however the inlet pipe is hot, the thermostatic valves are fully open,....any ideas don't really want to go to bed quite yet

Myser

How old are the radiators and pipework?

Are the radiators warm at the top and colder towards the bottom?

Was the moved radiator and others balanced correctly? There is a lockshield valve on each radiator at the opposite end to the thermostatic valves. This webpage shows how to balance radiators using the lockshield valve:

http://www.homebuilding.co.uk/advice/DIY/how-balance-radiators

girlsmum

the ones upstairs are fully toasty, downstairs whne the valves are open the pipes before them are hot, but it is not going through the rad, or if it does it is not making them hot just warm.

will have a go balancing as per the link in the morning, its warm upstairs so not as cold as it might be, my hotwater bottle is helping;)

Babbawah

girlsmum wrote: »

the ones upstairs are fully toasty, downstairs whne the valves are open the pipes before them are hot, but it is not going through the rad, or if it does it is not making them hot just warm.

will have a go balancing as per the link in the morning, its warm upstairs so not as cold as it might be, my hotwater bottle is helping;)

Defies logic. You may have a very serious 'internets' problem that MSE cannot possibly solve.

Each rad has a feed and a return pipe. Each rad is on a circuit.

Where exactly does the pipework stop being hot ?

girlsmum

well the radiator in the living room i opened the valve and the pipe was hot and the bottom corner started to warm up, then it went cold again...

Babbawah

girlsmum wrote: »

well the radiator in the living room i opened the valve and the pipe was hot and the bottom corner started to warm up, then it went cold again...

I'm not a pro' plumber . . . but I suspect a poltergeist.

I strongly recommend that you get a priest in.

girlsmum

lol thanks for the suggestion....

Jonesya

I had something similar on my central heating following a drain down, where a couple of the downstair radiators wouldn't warm up. It seemed to be due to an air lock somewhere in the pipework that bleeding the radiator wasn't enough to shift.

I found opening the drain valve on the affected radiators with the system running, blasting out a good flow of water seemed to shift the air lock and get these running again.

Ruski

Airlock - as above - either drain from a draincock to move the air, or easier to try to turn off all upstairs ones and any working ones downstairs (just by the trv will be fine) and try to force the flow of water through one 'non working' one at a time - it'll gurgle and bang but it should work and get toast rads.

HTH

Russ

Seronera

Rads hot upstairs and cold downstairs is often pump related. Try venting the pump as it may be air locked. The upstairs rads often work with no pump as hot water is less dense and rises. The pump is there to counteract that and send it downstairs.....so

1 shut off all upstairs radiators completely 2 vent pump 3 turn it on. If the system won't go then open one upstairs rad only to get the system running,then close downstairs rads one by one. Gradually you can usually persuade a system back to life that way.

Any air released will find its way to an upstairs rad usually. There is often one you have to vent regularly and that's where its most likely to go.

searchlight123

Myser wrote: »

How old are the radiators and pipework?

Are the radiators warm at the top and colder towards the bottom?

Was the moved radiator and others balanced correctly? There is a lockshield valve on each radiator at the opposite end to the thermostatic valves. This webpage shows how to balance radiators using the lockshield valve:

http://www.homebuilding.co.uk/advice/DIY/how-balance-radiators

excellent article, clearly explaining the method of balancing.
thanks for this reference myser.