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 two
red wires (12 & 13) on the disconnected plug.
Resistance should be approximately 45 - 65 Ohms.
Test 2:
Measure the resistance between the each of
the red wires (12 and 13) to a suitable earth point.
Resistance should be greater than 1MOhm on both tests.
Measure the resistance between the two
red wires (12 & 13) on the disconnected plug.
Resistance should be approximately 45 - 65 Ohms.
Test 2:
Measure the resistance between the each of
the red wires (12 and 13) to a suitable earth point.
Resistance should be greater than 1MOhm on both tests.
Isolate as per TOPs P4
and refit as necessary