Recent content by gorgonzola

Thats what I thought but I am not mistaken as I had a sticker on the timer switch itself to remind me which channel or "zone" is for underfloor heating and which is for rads. It is very weird! I have re-set the times as you suggested but just though that there may be some easy explanation as...

Hello, I have a Horstmann H37XL (3 channels) which controls my underfloor heating (downstairs), my radiators (upstairs) and my hot water system. Up until recently, the channel marked HTG1 used to control my underfloor heating and HTG2 would control my rads, HTG3 for hot water. All of a...