For a while now our upstairs radiator has only been getting half warm, so last night I beld the thing. Loads of air came out and the radiator was nice and hot.
The heating went off as normal but now when the heating comes on that radiator stays cold.
I have checked the pressure in the boiler and all seems fine there, and all other radiators are hot.
Anyone have any idea what would be wrong and what I would need to check?
Thank you in advance
Shin