Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove the connector from the fan assembly
Measurement:
Measure the resistance between each of the fan terminals as listed in the table below:
Are the resistances measured as expected?
| Fan terminals | Resistance (approx.) |
| 5 to 1 | 1 MOhm or greater | 4 to 1 | 1 MOhm or greater | 2 to 1 | 23.6 kOhms |
Are the resistances measured as expected?
Isolate as per TOPs P4
and refit as necessary