Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Remove connector X16 from the PCB
Measurement:
Measure for resistance across both white wires of connector X16.
Expected resistance short circuit.
Is the resistance measured as expected?
Expected resistance short circuit.
Is the resistance measured as expected?

Isolate as per TOPs P4
and refit as necessary