Myson old TRV

[Ambergreen45]

Hi,

One of my radiator stays cold. I'm trying to undo the TRV, I managed to pull the retaining metal clip upwards, but cannot turn the plastic knob anticlockwise since the main metal body has 2 very small metal retainers that are lodged into the brown plastic grooves at the base of the handle. When I try to pull the knob up, it's so tight, nothing happens, it looks like the brown base of the handle is secured to the metal body. How do I go about it without breaking anything?

I would really appreciate your practical advice.

Many thanks.

 

[Nige F]

Get the metal clip right up under the head - then rocking slightly and pulling will release it. Then press the exposed brass button down repeatedly- don't pull it up with pliers !