Our old Landis & Gyr RWB2 programmer would not let us have the heating on without the hot water being on.
I thought this was because of the programmer itself so I bought a digital Seimens RWB29 that goes on the same backplate to replace it in the hope it would give me seperate control of both CH & HW.
I have put the programmer on Mode 16 which I think should allow seperate control, the heating does not work on its own, but the hot water does.
Can anyone tell me if this is because it needs to be wired differently or could it possibly be a problem with the system itself, such as the pump/valve?
I thought this was because of the programmer itself so I bought a digital Seimens RWB29 that goes on the same backplate to replace it in the hope it would give me seperate control of both CH & HW.
I have put the programmer on Mode 16 which I think should allow seperate control, the heating does not work on its own, but the hot water does.
Can anyone tell me if this is because it needs to be wired differently or could it possibly be a problem with the system itself, such as the pump/valve?