No, because you haven't told us what is is, what the problem is, or what you are trying to do.Does anyone have a wiring diagram for this?
It’s a job that someone has had a friend do. They have changed the immersion element. And rewired the heating control stat.No, because you haven't told us what is is, what the problem is, or what you are trying to do.
Who put those wires in?
Using the diagram below, and your pic above, the rewire has been done incorrectly.
On the stat, left hand side, there needs to be a link from the second terminal to the one below - third terminal. All the other cables are to remain in their present positions.
file:///C:/Users/User/Downloads/bimetal-59t-66t-section-en-us-5469062%20Manual%20(1).pdf