Thanks for your speedy and informative reply.
There was no ice in the icemaker - I rotated the "fingers" and nothing dropped but I did notice that the underside of the mechanism that drops cubes was hot - probably that is part of the process of making cubes but I don't actually know.
You mentioned the valve...if this is the one that is located at the rear bottom left hand side when standing behind the fridge then you have probably keyed in on the problem. After I read your post I went behind the fridge and there is water coming from the inlet valve across the bottom of the machine to the left side and there is a
mechanism with two tubes leaving the back of this mechanism - and the tube that goes up to the freezer compartment has no water coming out when I disconnect. I am also a bit confused because we are getting filtered water to drink no problem.
Anyway if you could briefly comment on this it would be appreciated...