central heating - just water on controller but rads come on!

[Deleted User]

Very strange.

Got a heating controller that, basically, you set separate times from heating and water.

At the moment, heating is off. But we still need hot water.

Trouble is radiators still come on even when its off. (But obviously, boiler is running heating the water).

Any ideas?

Not knowing much about it but I assume that in this case something should be telling the system to fire up, heat the water but not send hot water into the rads?

keystone

Conventional system - mid position diverter valve or zone valve depending on configuration.

Combi boiler - diverter valve internal to boiler.

The first you can attend to yourself if you have a mind but please say what kit (motorised valve make/model, boiler make/model/control system make/model) you have.

The second probably an RGI job but again please say what boiler?

Without said data we are guessing a bit.

Cheers

keletkezes

[Shameless thread hijacking here] I have the same problem: we've a 12-year-old Baxi Bermuda back boiler. We're able to turn the rads off so I do that whenever we don't want 'extra' heating. Our controller is a Lifestyle single-time four-option (on, off, once, twice) thing (we can have the heating and/or hot water on between A and B and X and Y but not separately unless we want to set one to 'once') with Advance buttons.

keystone: where do I find the valve bit? The tank and pump is in the airing cupboard if that helps.