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Hi aain - i turned off all three downstairs rads (except the faulty one). Now they are all cold at the bottom and srtill hot at top - so no change with faulty one. I remember when the house was built that i had to get the builder back in for numerous problems including lots of faulty rads. I...

Thanks for the suggestions and help so far !! The pin under the TRV pushed up and down freely and no difference in rad noted. Do i have to turn off the lockshield valves on all the other rads in the house (there are quite a lot !!) or just downstairs ones ? And do i turn them off fully or...

The house is only 5 years old. The problem had been there for as long anyway. As far as i can remember the rad has never really got hot. I just checked the rad, and the top is lukewarm full length, but the bottom is cold full length except for the feed pipe / TRV at one end. All the others are...

I have a large detached house - all radiators work ok except the one in the lounge which i think must be the furthest from the pump / tank as it has a drain mechanism. It gets little more than lukewarm at the top, but cold at bottom. The feed pipe / TRV is hot but the return is cold - all the...