I moved in to my house this year and the bedroom rad has never worked.
I have bled it, checked if the valves are working and checked the pipe for bends.
When i have the rad off i turned the cold valve and it gushed out with water but when i turned the hot valve it trickled out. Once the heating is on the pipe below is boiling hot.
Is there a chance that the plumber who installed the system got the pressure wrong with the hot and cold pipe as it seams the rad is not heating up because the hot flow is not strong enough to compete with the cold. Also all my other rad work fine?
Hot and Cold ???? you mean flow and return. Many DIYers think radiators are plumbed in the same as bath's etc with hot and cold pipes. And many seem to think the water in the radiators is the same water that comes out when you open the hot tap :? if this is you're thinking - then you need a plumber, you need to understand how systems work before you can start fault finding and trying to repair faults.
Check both valves are open - Isolate all other radiators and see if it heats up, If you're sure the valves are ok - then there may be a blockage, especially if 8 or 10mm pipe, there could be a blockage at the manifold.
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