No hot water

[CBW]

The only thing I wonder about is why there is only four terminals compatible with the three port valves five wires that seems really odd.

It depends if it’s been changed from an old set-up, eg a w-plan. It also depends on what is available at your wiring center.

 

[NormanStansfield]

It depends if it’s been changed from an old set-up, eg a w-plan. It also depends on what is available at your wiring center.

When I get a chance I will take a picture of the wiring, he has left the bottom screw of the plate off hahaha.

The house was built in the 90's and the old tower three port valve was ancient. I have been in about 9 years. It could have originally been a different plan. The house has all sorts of weird DIY they might have changed it.