RESISTANCE OVERHEAT STAT

Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4

Set Multimeter to Resistance

Remove both wires from the overheat thermostat

Measurement:

Measure the resistance between the terminals of the overheat thermostat.
Expect continuity / zero resistance.
Is the resistance measured as expected?

Note:
Image shows the overheat stat removed for clarity but the test is carried out with the overheat stat in situ attached to the primary heat exchanger.