Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove pump cover and disconnect electrical connections
Measurement:
Test 1:
Measure the resistance between the pump terminals as per the table below:
Resistances measured are approximate.
Test 2:
Measure the resistance between each of the pump
terminals to a suitable earth point.
Expect a resistance of greater than 1 MOhm for each test.
Measure the resistance between the pump terminals as per the table below:
| Terminals | Resistance (Ohms) | 1 - 4 | 110 |
| 1 - 6 | 215 |
| 2 - 3 | 0 |
| 2 - 5 | 230 |
| 3 - 5 | 230 |
| 4 - 6 | 110 |
Resistances measured are approximate.
Test 2:
Measure the resistance between each of the pump
terminals to a suitable earth point.
Expect a resistance of greater than 1 MOhm for each test.
Isolate as per TOPs P4
and refit as necessary