Basically, when I switch on heating, the timer is switching on both heating and hot water (to a tank). Both lights come on.
Oddly - I can switch on hot water independently - without triggering the heating.
I have taken off the timer and ensured it is switched to Independent control and Gravity system. Also the 3 way valve, heater thermostat and heating pump are all functioning as they should.
I have seen posts that suggest poor contact with the wall plate could cause issues like this - it is a much older back plate.
Does anyone have any other suggestions, or know of this issue?
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!
