Thermostatic Rad Valve

[iddon]

We've had a radiator that until recently has refused to warm to a decent temperature. Tried bleeding it and forcing heating by shutting off all other rads in the house and still no change. Was about to consider replacing rad unit last week whilst at the same time replacing a bathroom rad with a towel warmer. Since installing towel warmer the errant radiator now heats to the point were you could cook on it! The problem I have now is that I can't adjust the heat level despite turning the thermostatic radiator valve off.
Any suggestions?

 

[Nige F]

You need a new valve - it`s knackered

 

[iddon]

Replaced upper part of valve as pin on valve had broken through plastic and was being left open. Job sorted and no need to replace entire unit.