It’s a sealed system. In both systems in order to fire boiler HW needs to be switched on which wiser doesn’t seem to do along with heating.
Thanks. Probably should have stated that it’s oil as opposed to gas. Most threads seem to be related to gas.
I have the exact same issue on a...
Yep it is.
I’ve since found out that there is limited compatibility with gravity systems. :(
thanks for your quick replies
Yep the pictures are of the existing programmer. So I’ve basically wired the new wiser backplate exactly as the old one and everything works apart...
Hi Everyone. I’ve searched to no avail for some answers to what should have been a relatively straight forward install.
Attempting to install a...
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