Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove connector J1 from the PCB
Remove the microswitch from the hyrdroblock (do not disconnect the wires)
Remove the microswitch from the hyrdroblock (do not disconnect the wires)
Measurement:
Measure the resistance between pins the 2 pins on connector J1
(do not press the microswitch the pin must be released).
Expect continuity / zero resistance.
Is the resistance measured as expected?
(do not press the microswitch the pin must be released).
Expect continuity / zero resistance.
Is the resistance measured as expected?
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Isolate as per TOPs P4
and refit as necessary