Heating Programmer problem

[DaveMo]

I replaced a Heating Programmer recently (Siemens RWB2E), and although the water heating works fine I cannot get the heating to work.

Does anyone have any advice as to what could be wrong ?

Thanks

 

[electronicsuk]

If the new programmer is not identical to the original then chances are that you have wired it wrong.

 

[andy212]

Hi was it the same programmer as before? if not maybe the old programer was hot water priority so you could only have the heating on when the hot water was on.if that was the case the you will need to change the wiring to make them independant.