RE: CH Not working plus select button not working on potterton EP2001?

Hi Guys I have checked the main fuse and it is ok, By the way the CH always comes on with the HW and the HW comes on by itself, this is what is happining now, The display is showing the clock and functions for HW but no functions on the CH side, the select button on the CH side is not working, but when the select on the HW side is pressed 3 times to cont it starts CH off (RED) but no HW any ideas, also is there any other fuse elsewhere other than in the main plug. Thanks