Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove the wires from the fan assembly
Measurement:
Test 1:
Measure the resistance between the live and neutral terminals of the fan assembly.
Expect approximately 35 ohms.
Test 2:
Measure between the live terminal of the fan assembly and a suitable earth.
Expect a resistance of 1 Mohm or greater.
Are the resistances measured as expected?
Measure the resistance between the live and neutral terminals of the fan assembly.
Expect approximately 35 ohms.
Test 2:
Measure between the live terminal of the fan assembly and a suitable earth.
Expect a resistance of 1 Mohm or greater.
Are the resistances measured as expected?
Isolate as per TOPs P4
and refit as necessary