Help required, cold radiator

28 Dec 2017
Reaction score
United Kingdom
need some help, all other radiator in house heat up very well except one. I have bleed the radiator and tried to balance the flow as thought this could be furtherest from boiler, but no difference. Weird thing is that the return pipe on cold rad is warm and pipe with valve on is stone cold. Any ideas?
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Close all the other radiators and this will force heat to the rad not heating up,
make sure its just not a case of venting.
If successful open the other rads one at a time.
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What do you mean by venting issue? House was owned by a couple before I moved in so the rest of the house was turned down. As soon as I moved in I opened all the rads to make kids rooms warm, but one left in our room is the one that stays cold. Boiler on now so hopefully will heat up
If that doesn’t work

Has it got a thermostatic valve ? Remove the head, gently push down and pull up pin, it may be stuck in the closed position

Replace head
Just checked and rad is definitely warmer than it was before, in a shorter time. Now how do I get the rest on and keep this one warm?
Turning all back on one by one and seems to be working ok, appreciate the help

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