Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove fan connector (red and blue wires) from the PCB
Measurement:
Test 1:
Measure the resistance across the 2 wires on the connector.
Expect a resistance of approximately 117 ohms to 170 ohms.
Test 2:
Measure the resistance between the red wire on the connector and a suitable earth point.
Expect a resistance of 1 MOhm or greater.
(O.L is acceptable because this is greater than 1MOhm)
Measure the resistance across the 2 wires on the connector.
Expect a resistance of approximately 117 ohms to 170 ohms.
Test 2:
Measure the resistance between the red wire on the connector and a suitable earth point.
Expect a resistance of 1 MOhm or greater.
(O.L is acceptable because this is greater than 1MOhm)
Isolate as per TOPs P4
and refit as necessary