Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove the pump connector ST4 from the PCB
Ensure pump speed selector is set to position 3
Ensure pump speed selector is set to position 3
Measurement:
Measure resistance across blue (neutral) and live (brown), then across live (brown) and Earth (green/yellow) of disconnected connector ST4.
Expected resistance (approx.) as below.
Expected resistance (approx.) as below.
| Leads | Resistance in Ohms | Brown - Blue | 160 Ohms |
| Brown - Earth | Open Circuit |
Isolate as per TOPs P4
and refit as necessary