Right, just had my loft converted fitted a towel rad filled the rad & turned on the heating brought the pressure back up to correct position. Everything fine towel rad nice and hot, just by chance went back upstairs about 3-4 hours later towel rad stone cold but the heating was still on and every other rad in the house red hot??? left the heating on another 3-4hours nothing. Got a plumber round he turned all the rads off turned the heating on and bled the rad till the water was hot re-connected pipe great rad red hot turned the other rads in the house back on everything ok. 2-3 hours later towel rad stone cold all other rads red hot I am close to ripping it off the wall PLEASE ADVISE
Turn down the ones closest to your boiler via the valve opposite the trv, (lockshield) turn them completely off then crack them open a few turns, work your way back to the furthest one away which will probably end up near fully open,it may take abit of time but will work.
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Right, just had my loft converted fitted a towel rad filled the rad & turned on the heating brought the pressure back up to correct position. Everything fine towel rad nice and hot, just by chance went back upstairs about 3-4 hours later towel rad stone cold but the heating was still on and every other rad in the house red hot??? left the heating on another 3-4hours nothing. Got a plumber round he turned all the rads off turned the heating on and bled the rad till the water was hot re-connected pipe great 
