Central heating problem

naladeer

Just put the central heating on to check all ok before the winter arrives. All 4 radiators upstairs are working fine, three of the four downstairs are not working, bled all the rads and got a fair bit of air from one of the bedroom ones but still three of the rads not heating up. Boiler pump etc only three years old.

ariba10

I would shut off all the working rads and see if it has any effect on the non working ones.

(then report back)

JC_Derby

sounds like an airlock

are the three rads not heating at all or are they hot in any part.....are the tubes to the radiators heating? Do the rads have TRVs?

dunstonh

Have you checked your pressure? 

tim_p

Is there a zone valve that could be stuck?