Removing TRV - Danfoss BS6284

wowy

I'm having a problem with a single radiator in the house not heating. It had been heating up until about a fortnight ago. I've checked the usuals (bled the radiator, turned off other rads to try to force any potential airblockage out, checked the outflow valve). The pipe up to the TRV is warm but the rad doesn't heat up, so I presume that the issue is that the pin is stuck.

My problem is trying to remove the TRV. It's an old thermo and there's no instructions etc I could find online. Some of the newer models seem to have an inner tread that you counter-twist, but this doesn't. It has a screw which secures a collar, but when I open that I still can't remove the TRV.

I didn't want to pull it too hard in case I was doing it wrong, so has anyone any suggestions?

spireland32

They are a small flat head like a phase-tester and a small allen key can be either. Loosen and wiggle side to side and up and down gently and pull towards you. Take your time and you won't break a clip.

wowy

There's no fitting or screw on the top of the thermo - I presume I just undo the screw at the collar and gently wiggle it out from that so?

spireland32

That's it... the screw holds a black clamp which holds the thermostat on

wowy

Done. Heat restored and didn't break thermo. Cheers!

spireland32

No problem