I have a cold radiator in the house we have moved into. I suspected the rad might be blocked or the TRV stuck so isolated it and flushed it through but that wasnt the problem - there was no water coming out of the flow pipe to the rad (I took the TRV off and no water came out). The rad is downstairs, the pipes that feed it are plastic with pushfit connectors (look quite old) and go up the corner of the room into the bedroom floor above but unfortunately the room has a laminate floor.
I have had the corner of the laminate up and can see the pipes coming up but they dont connect near the closest rad in that room and cannot see where they go without ripping up the whole floor. Is it likely to be a blockage in this pipe somewhere? Wouldnt the pressure in the system be enough to blow out any debris in the pipe? The only other thing I can think is there is a valve somewhere on that pipe that is closed but why would that be closed??
Edit: its a sealed system running about 1.5 Bar if that makes any difference
I have had the corner of the laminate up and can see the pipes coming up but they dont connect near the closest rad in that room and cannot see where they go without ripping up the whole floor. Is it likely to be a blockage in this pipe somewhere? Wouldnt the pressure in the system be enough to blow out any debris in the pipe? The only other thing I can think is there is a valve somewhere on that pipe that is closed but why would that be closed??
Edit: its a sealed system running about 1.5 Bar if that makes any difference