Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Disconnect the connector from the fan assembly
Measurement:
Measure the resistance from pin 1(black probe) of the fan connector to the other connections 2 to 4 (red probe).
Expected resistances should be as table below.
Expected resistances should be as table below.
| Pin | Resistance (approx) |
| 1 - 2 | 22.7 kohms |
| 1 - 3 | 0.0 ohms |
| 1 - 4 | 1 Mohm or greater |

Isolate as per TOPs P4
and refit as necessary