thermostat quezzie

[woodie]

anyone have an idea?

Potterton heating timer has gone a little ape. Even with central heating switched to 'off' ..not on timer..we still get the central heating coming on when we are only (according to the on off lights) heating the tap water.

cant seperate central heating from normal hot water anymore. worked for a few years previous.

Im thinking new box needed but you never know. Might be a common thing.

[Pickle]

I can't answer your question, but interestingly we've got exactly the same thing happening. Only noticed it yesterday when we finally decided the time had come to switch off the heating - despite the heating being switched to "off" the radiators are still hot when the water's being heated.

Hopefully someone has a simple answer!

[dc]

Sounds like it might be the motorised valve that closes off the supply to heating or water. They're usually in little grey steel boxes (often made by Honeywell) beneath the boiler where all the pipes come out. There is often a little lever that allows you to work them manually - which can work as a temp measure at least.

Motorised valves

Basically if it's failed and stuck open, when you heat water it will flow into the CH pipes as well.

[ratty]

I had exactly the same problem - turned out to be the actuator. You are not on Abbotswood by any chance?

[woodie]

splended ty.