cold rad

[robbymearns64]

can anyone help ????
i drained down my central heating system to fit a towel radiator, when i refilled the system every radiator in the house is scalding hot apart from 1, the two 10mm pipes that feed it are also cold, is this an air lock and is there a solution ??? many thanks. there is no header tank and i dont have a combi, only a hot water cylinder and a cold storage tank in the loft.

 

[bellairaphon]

have u tried venting the rad? have you tried turning your central heating on and shutting down the other radiators to try push any air through@

Nath

 

[robbymearns64]

yes ive done that and the pipes are still cold, would taking the rad off then opening up the valves help ?

 

[Biguns]

If you have closed all radiators apart from the problem one (which I assume was working before you drained down) and the problem still persists, yes I would advise to remove rad and ensure you have flow at valves, if so take rad outside and blast through with garden hose

 

[robbymearns64]

hi, ive take the rad off the wall, there is water coming out of the lockshield valve but nothing coming out of the trv valve, do you have any suggestions, all other rads are ok. thanks

 

[Biguns]

See FAQ 6 In WHICH Boiler & CENTRAL HEATING FAQs at top of page

 

[Steve69the69Gas]

TRV pin stuck

 

[dextrous]

Op, you have identified the problem - you now need to try working the valve until you have water flowing out of it. Opening a duplicate post doesn't help

 

[Nige F]

opening another valve might