Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove the cover from the pump
Measurement:
Test 1:
Measure the resistance between the live and neutral connections inside the pump.
Expect approximately 160 ohms or greater.
Test 2:
Measure the resistance between the live and earth connections inside the pump.
Expect a resistance greater than 1 Mohm.
Are the resistances measured as expected?
Measure the resistance between the live and neutral connections inside the pump.
Expect approximately 160 ohms or greater.
Test 2:
Measure the resistance between the live and earth connections inside the pump.
Expect a resistance greater than 1 Mohm.
Are the resistances measured as expected?
Isolate as per TOPs P4
and refit as necessary