Testing Water Heater Wiring Diagram. Some vehicles mostly older models have a heater control valve. Check wiring and correct.
In the honeywell t87f thermostat series the single pole double throw switch makes closes one set of contacts when the temperature falls to turn on the heating appliance. In fact it is the most important part of choosing a new unit for your home. They said they couldnt do anything about that.
Wiring diagram click to zoom.
There is also a w v terminal that you can use to test the switches separately. 11 march 8 2013 110v wiring diagram this diagram shows the electric flow on the back of the water heater through the secondary switch to the hi limiteco to the thermostat and then to the electric element. Touch the resistance meter test leads to terminals t and w v. Water heater troubleshootingpdf page 7 version.