Recent content by der1cs

The Valve is a ...Honeywell.

Thanks Tony, D.

I have a, Horstmann centaurplus c27 two channel Programmer. The pump, is a Grundfos. My problem is, when on auto, the Hot Water / Central Heating.....comes on Outside the programmed times, even though they are both in the OFF POSITION, with no red lights on!!! Would appriciate some advice...