Thats what i thought but why where the radiators before getting warm?
Put 2 ballifixs on the 2 tails before the elbows. When i disconect the elbows and open the ballifixes the water was cold then went really warm. But after i shut them they go cold again after a while. Same with the rads when...
Took 3 radiators out of the conservatory and replaced them with 2 new ones. Also left two tails off and joined them with elbows for an extension at a later date. But now cant seem to get them to heat up. All the other radiators in the house are warm and the 2 new ones have been aired...
