I was in B&Q the other day and saw a neat little timer delay switch with touch control, looked exactly what I was after, replaces a normal light switch, did a soft start of the light and remained on for a configurable number of minutes before switching off. I bought one of these and fitted it, all seemed ok, nice soft start of the halogen lamps and fan came on. after 5 minites light went off and fan remained on as I'd expected. What I did not expect however is that the fan just stayed on! and didnt go off at all even after the normal run on time had well elapsed.
I had to remove the switch an revert back to the old one.
Can someone please advice what is going on here and also what the solution should be - apart from putting the switch in the room...