Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Disconnect connector X4 from the PCB
Measurement:
Measure the resistance across the two grey wires marked 12 and 13 on X4.
The resistance should conform approximately to the table below.
The resistance should conform approximately to the table below.

Isolate as per TOPs P4
and refit as necessary