1rad not hot Help and information on all topics relating to your central heating, air conditioning and ventilation issues.

[ukbill]

hi all my rads are ok they all have termo valves and anti tamper valves on the return which need a star key to adjust
but 1 rad wont get hot it was ok then just went off i have checked the valves all seem ok on the flow pipe there is a drain valve i put a hose on this and drained water then the water started to get hot and flowed through the rad but in reverse flow so it was returnin through the thermo
i let it run for a while then stopped it but within around 2 hrs it wen cold any help plz

[stoneyboy]

ukbill,
If you have the lockshield end nearly closed there is a chance that the opening has sealed with sludge. try opening the lockshield end fully.
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