Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Disconnect plug for pins 10-15 from the PCB
Measurement:
Test 1:
Measure the resistance between the brown (15) and blue (14) wires on the disconnected plug.
Resistance should be approximately 160 Ohms or greater.
Test 2:
Measure the resistance between the brown (15) wire
on the disconnected plug to a suitable earth point.
Resistance should be greater than 1MOhm.
Measure the resistance between the brown (15) and blue (14) wires on the disconnected plug.
Resistance should be approximately 160 Ohms or greater.
Test 2:
Measure the resistance between the brown (15) wire
on the disconnected plug to a suitable earth point.
Resistance should be greater than 1MOhm.
Isolate as per TOPs P4
and refit as necessary