The first thing we’ll do is make sure that all the radiator valves are open. So this is the TRV. This is the thermostatic radiator valve. Now we could see in the video with a thermal imaging camera, this one is bombed and this one is working. And then if we go to the next radiator, so obviously this would be in a different room. At the moment we can see that this one is on zero and it’s turned off. So if we open that one up and then now that’s open, we would need to leave that for awhile. And then if we go to the next radiator again, that might be in another room, and that one’s turned off. So we’re going to turn that one on, and again in this one. And then what we’re going to do that, we’re going to wait now a few minutes and we’re going to see if they all get warm.
There could be a number of reasons why your radiator is not working, or one of the radiators is not working. So now we’ve opened all the valves. This radiator here, this one is working fine. This one down here, again, this one’s working fine. And when we go over to this one, this one is working as well. And we’ve got one radiator here that is cold. So I’m going to show you now, a few ways to remedy that. So if we have a look on the thermal imaging camera, we can see the bottom two radiators that were confined. And then when we go up to the top, we can see the top one is working there. But when we go over to this one here, we’re can see… It’s a bit awkward to show you that. But you can see that that one’s not getting warm.
It could be that your radiator’s, it’s got air in radiator and you may need to bleed the radiator. And we’ll have the link below on how to bleed the radiator. And also what to look out for when you are bleeding the radiates as well. But if you’re ready to bleed the radiator, you need to get a cloth or a jug and bleed it until the water comes out of the top. On this particular one, this is fine. It’s full of water and that’s not the issue. So let’s have a look now closely at the radiator. When we look at the radiator, it could be that the lock shield on this radiator, on the central heating radiator, could be this lock shield here is turned off. Or it could also be that on the thermostatic radiator valve, the pin on the bottom, the pin under here is stuck as well. It could also be able other reasons. It could also be that the system is sludged up or you could have an air lock and I’ll show you how to clear an air lock as well.
But first of all we’ll tip the top off on the thermostatic radiator valve. Now it depend on the type of valve. But on this one, you can undo this fitting here. I’ll get a spinner. Sometimes you can open that to number five and your bolts are going to do that. I can’t undo it. And sometimes they might be a bit tight and you might need to get a set of grips like that. And what you can sometimes find is, that these pins here, are stripped down. I do see people say about pulling these pins up. I’d be a little bit careful with that. What I try and is, my view is try and push them down. Try and free them up and might be that you can gently tap it with a hammer. And I have seen other videos that say not to do that, but that’s my view.
If you gently tap it with the hammer, just gently, you don’t want to damage the top of it. And you want to free that valve up, that pin up, on there. But we can say that that one’s working fine. So the next thing to check then, if we go to the lock shield lock. And on the lock shield, take the top off, took the cap off, on the lock shield valve. And then we’ll need to make sure that this part of the valve is open and we can get a spinner on there, on a set of grips. And we turn that. I’ll zoom into that and show you.
So to open this valve, you put your spinner on. And you turn it anticlockwise, and anticlockwise is opening the valve. If you turn it the other way, if you turn it clockwise, that is turning the valve off. So what