I know that this is a popular topic so apologies if time wasting but I have tried most of the suggestions on the site and still no joy. Radiator worked for years, then was turned off for a period of time, and when turned back on, did not work. Rest of rads (small flat all on one level) work well. Have had the expansion vessel replaced (was needing it) and on the suggestion of the engineer, had a new rad installed. Still no heat. Pump is working fine. They are now saying I can pay for a flush which has no guarantee of working or that the pipework may have a kink or be the wrong size. The latter option involves lifting carpet and cutting away my floorboards to see the pipework. New rad is exactly the same size as the old rad, so no idea how the pipework can suddenly be the wrong size. Flush is expensive, but not sure what my other options are? Have tried turning off all other rads to force heat through and didn't work. Rads have all been bled and fine. It is a very old system, and never been flushed. Am just wanting some reassurance in case I am spending even more money that will not fix the problem. Very grateful for any views.
Radiator not heating up
- Thread starter Halle
- Start date
I may have missed it in your post, but do you have a TRV fitted which is stuck? If all your other rads are working then its more likely to be a problem local to the rad and a powerflush is the last thing to consider after checking all other possibilities.
Thanks for the fast reply! TRV is a thermostatic valve, right? The valve is simply an on/off with no thermostatic control at the radiator itself. As the radiator is new, including the valve, could it still be a valve issue? Do you think I should get them to look at the pipework connected to this radiator alone and avoid the expensive flush? Really appreciate your time on this. Am a complete amateur but don't want to be taken for a ride on this one, and more importantly, I just need it to work! Many thanks.
If the radiator worked fine for years, it won't be undersized pipework, if their was a kink in the pipe something must have caused it, as in it being hit or crushed. You say they have replaced the radiator and so it is unlikely to be the trv if they fitted new valves.
To start I would check that the valve at the other end is open using a small spanner and I would check that the radiator had been bled.
Their are things you can do to clear blockages or checking for blockages without going straight for a flush.
To start I would check that the valve at the other end is open using a small spanner and I would check that the radiator had been bled.
Their are things you can do to clear blockages or checking for blockages without going straight for a flush.
I will bet you have not tried this,
turn both valves off,
remove the vent (plug), if its half inch BSP, fit a drain cock or a simmilar fitting attach hose in to a bucket or to outside,
open one valve at a time and see if water flows out ok,
if both flow ok it should work if not then at least you know which pipe or valve is the problem and can take it from there.
turn both valves off,
remove the vent (plug), if its half inch BSP, fit a drain cock or a simmilar fitting attach hose in to a bucket or to outside,
open one valve at a time and see if water flows out ok,
if both flow ok it should work if not then at least you know which pipe or valve is the problem and can take it from there.
Thank you for the advice. I would have thought they'd have bled the rad and opened the valves, but I will check as you never know! Any suggestions as to what else can be done to identify a blockage before I resort to a flush? Not sure what steps can be taken... Again, thank you for your help. Much appreciated.
When you try above, I have on occasion been known to turn the filling loop on to try and force the blockage out with the valve in question open obviously.
Keep an eye on the pressure though, maybe a two person operation, one at the rad/ hose and one at the gauge/filling loop
Run the hose to outside
Keep an eye on the pressure though, maybe a two person operation, one at the rad/ hose and one at the gauge/filling loop
Run the hose to outside
Run it to the toilet and under the seat to keep it in place.
Add a little bit of washing up liquid to the pan first to help stop staining.
Add a little bit of washing up liquid to the pan first to help stop staining.
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