One radiator in my house won’t come on anymore, tried bleeding it, no difference

J0hnick · 10-04-2022 6:47pm #1

Hi,

As the topic says, the radiator in my office used to work but has stopped working all of a sudden, all the other radiators work fine. I’ve tried bleeding it but it didn’t make any difference, water came out within seconds.

Does anyone know what might be causing this and how to fix it ?, thanks in advance.

Atlantic Dawn · 10-04-2022 6:51pm

Does it have a thermostatic valve on it?

If so try this...

https://www.youtube.com/watch?v=phFW-IIsH54

horse7 · 10-04-2022 6:53pm

You tube is your first port of call.

C. Eastwood · 10-04-2022 7:40pm

There may be air in one of the 2 pipes feeding the radiator - airlocked

You could unscrew and remove the thermostatic top part- the part that rotates to adjust the temperature as seen in the photo below

38D7A422-3A7F-4AD2-87C3-C7F2B5F33BB3.jpeg

If you take off this top rotating nob, the other part of the valve will be open and the rad should get hot.

if it doesn’t- then there is an airlock in one if the 2 pipes supply the rad.

J0hnick · 10-04-2022 7:50pm

https://www.boards.ie/discussion/comment/118908045#Comment_118908045

All the YouTube videos I saw said to bleed the radiator which made no difference.

J0hnick · 10-04-2022 7:50pm

https://www.boards.ie/discussion/comment/118908036#Comment_118908036

Thanks, it is a thermostatic valve, I’ll try that later.

horse7 · 11-04-2022 9:15am

Maybe have a better look at you tube with the following, radiator not heating up after bleeding.

J0hnick · 14-04-2022 5:22pm

Opened up the thermostat valve, the pin was up, tried wiggling it with a long nose plyers but no luck. Was going to hit it with a hammer but I saw another video saying not to do that, does the pin have to go down for the radiator to come on ?, cause it looks like its stuck in the up position.

C. Eastwood · 14-04-2022 7:45pm

When the pin is up the Valve is open and the hot water should flow through the rad.

If it doesn’t and you have bled the rad then it looks like an Airlock in the piping.

Akrasia · 14-04-2022 9:08pm

The heating system might not be balanced. There are two valves on each rad, the in valve and the out one. If the out valve in some of the rads are too wide open then there might not be the proper pressure in the heating system to heat that radiator.

Close the out valve fully and then open it a quarter turn and see if it starts to warm up. If that doesn't work it could be one of the other rads that needs to be balanced

https://m.youtube.com/watch?v=QUWbxccVDpc

One radiator in my house won’t come on anymore, tried bleeding it, no difference

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