I have a Combi system which was installed about 18 months ago. Recently the radiator in my bedroom has started to make a noise coming from the valve, it sounds pretty much what it is, i.e. water rushing through a pipe under pressure but occasionally it gets quite a bit louder and starts to whistle. Not loud enough to hear outside the room but certainly loud enough to stop me from sleeping.
Does this indicate a fault with the valve? It it possible to just remove it completely? I never use it anyway.