Trv valve failed

[AndyPRK]

Is it common for them to fail closed ?

My hall one isn’t working.
Water comes out the bleed valve

 

[terryplumb]

Yes its common ,especially if the trv has been left closed for a lengthy period.

 

[AndyPRK]

Thanks.

It’s been left open.

 

[terryplumb]

If you remove the sensor head ,does the pin in the centre of the valve body move up and down ?
What makes you think the trv is the cause of the radiator not heating ?

 

[AndyPRK]

I don’t need a trv here.

Can I take the head off then and un jam this pin you talk off?

Until summer.

 

[terryplumb]

Take the head off and see if the pin is stuck down. Your problem may have nowt to do with the rads trv /not heating Andy.

 

[AndyPRK]

It’s a danfoss.

Maybe 2001 vintage

 

[AndyPRK]

Had a go

Think I’m too scared to break it in winter !

 

[terryplumb]

Its not heating / working . Can't see what ya got to lose

 

[AndyPRK]

It leaking and all my other rads not working

 

[terryplumb]

Fair enough. But its not very likely for either of those to happen ,if all you do is remove the plastic sensor / actuator head. But hey ho ,its up to you.

 

[AndyPRK]

So I can unscrew the plastic bit ?

 

[Madrab]

Careful if trying to pull the pin up, pulled a couple right out in my time ....

 

[terryplumb]

So I can unscrew the plastic bit ?

Yes.

 

[AndyPRK]

I’ll have a look tomorrow if I have time

Thanks.