Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Remove connector X20 from the PCB
Measurement:
Measure resistance across the black wire and blue wire
(adjacent on the top row, right hand side) on X20.
(adjacent on the top row, right hand side) on X20.

Isolate as per TOPs P4
and refit as necessary