Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Disconnect 4 pin connector X6 marked "Pump" on main driver board
Measurement:
Test 1:
Measure the resistance between the blue and brown wires at connector X6.
Resistance will vary by pump but should approximately 160-220 Ohms.
(If ErP pump is fitted resistance will be significantly higher)
Test 2:
Measure the resistance between the brown
and green/yellow (earth) wires at connector X6.
Resistance should be greater than 1M Ohm.
Measure the resistance between the blue and brown wires at connector X6.
Resistance will vary by pump but should approximately 160-220 Ohms.
(If ErP pump is fitted resistance will be significantly higher)
Test 2:
Measure the resistance between the brown
and green/yellow (earth) wires at connector X6.
Resistance should be greater than 1M Ohm.
Isolate as per TOPs P4
and refit as necessary