Brrrr.... been cold this weekend with our central heating not functioning! I thought it was the Randall Danfloss 4033 timer control but it turns out to be the ACL Lifestyle Mid-Position valve located above the pump in our airing cupboard. It seems this is not working properly - sometimes on for a short period, sometimes off and the hot water scalding. I cannot find the item on the 'net' and it must be 10 years plus since we had it and probably not longer in production. Does anyone know of a suitable and recommended replacement? I was thinking of the electrics mainly as I realize that it will mean a 'draindown' of at least upstairs. If anyone has any suggestions I would be really grateful as would my wife who is shivering all the time!!!!