I have two radiators out of 6 that do not heat up. They are neither on a different floor, or at the end of the system (as far as I can make out).
In both cases, there is no heat in either the 'in' pipe or the 'out' pipe.
I have tried to bleed one of them and clear water comes out immediately. Bled for a few minutes and found that the 'out' pipe started to heat up and this heat gradually fed into the radiator, however, when I stopped bleeding the radiator quickly went cold again.
Any ideas?
In both cases, there is no heat in either the 'in' pipe or the 'out' pipe.
I have tried to bleed one of them and clear water comes out immediately. Bled for a few minutes and found that the 'out' pipe started to heat up and this heat gradually fed into the radiator, however, when I stopped bleeding the radiator quickly went cold again.
Any ideas?
