possibly stuck TRV pin.
Check 75secs YT vid from 19secs onward to see if applicable to the specific TRV type.
Vid has terrible audio, and suggests there's no need to reassemble
"},{"@type":"Comment","@id":"https://www.hotukdeals.com/comments/permalink/52600466","author":{"@type":"Person","name":"Timbonagasaki"},"datePublished":"2024-04-18T11:30:24.000Z","text":"Swap the TRV with another off a working radiator to see if the fault is the TRV.
Then buy a new one/fix it."},{"@type":"Comment","@id":"https://www.hotukdeals.com/comments/permalink/52600618","author":{"@type":"Person","name":"bracey100"},"datePublished":"2024-04-18T11:58:39.000Z","text":"had this prob makesure the the trv pin moves up an down think i used pliers like others have said tap side of it"},{"@type":"Comment","@id":"https://www.hotukdeals.com/comments/permalink/52600856","author":{"@type":"Person","name":"wpj"},"datePublished":"2024-04-18T12:36:00.000Z","text":"Agree with all these comments; had thi sin my son's bedroom, but it took a hammer tap to loosen. Stuck again, now, though."},{"@type":"Comment","@id":"https://www.hotukdeals.com/comments/permalink/52603748","author":{"@type":"Person","name":"DealHub"},"datePublished":"2024-04-18T21:11:04.000Z","text":"I just want to thank everyone who contributed to this post. As highlighted by all, the pin was stuck under the TRV, a quick blast with water dispersion 40 spray and the radiator is back to working again. Really much appreciated, can't thank you all enough but thank you again "}],"commentCount":11,"interactionStatistic":10,"articleSection":"Ask"}