Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove rear control panel cover to expose main PCB
Remove pump connector marked H1 on the main PCB
Remove pump connector marked H1 on the main PCB
Measurement:
Test 1:
Measure the resistance across the live (brown lead) and neutral (blue lead) connection on the connector marked H1 on the main PCB.
Resistance will vary by pump but should be above 80 Ohms
Test 2:
Measure the resistance across the live (brown lead) and suitable Earth
Expected resistance OL or greater than 1MOhm
Measure the resistance across the live (brown lead) and neutral (blue lead) connection on the connector marked H1 on the main PCB.
Resistance will vary by pump but should be above 80 Ohms
Test 2:
Measure the resistance across the live (brown lead) and suitable Earth
Expected resistance OL or greater than 1MOhm
Isolate as per TOPs P4
and refit as necessary