Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove wires from fan assembly noting their locations
Measurement:
Test 1:
Measure the resistance between the front and lower rear terminals at the fan assembly.
Expect a resistance of approximately 260 ohms.
Test 2:
Measure the resistance between any one of the fan terminals and a suitable earth.
Expect a resistance of 1Mohm or greater.
Are the resistances measured as expected?
Measure the resistance between the front and lower rear terminals at the fan assembly.
Expect a resistance of approximately 260 ohms.
Test 2:
Measure the resistance between any one of the fan terminals and a suitable earth.
Expect a resistance of 1Mohm or greater.
Are the resistances measured as expected?
Isolate as per TOPs P4
and refit as necessary