Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Disconnect connector J3 from the control PCB
Measurement:
Measure for resistance across the actuator at connector J3 as per table below:
RESISTANCE DIVERTER VALVE ACTUATOR AND HARNESS
| Black test probe | Red test probe | Resistance |
| Pin 2 (Blue) | Pin 1 (Black) | 9.8 kOhms or open circuit |
| Pin 2 (Blue) | Pin 3 (Brown) | 9.8 kOhms or open circuit |
1
5
Isolate as per TOPs P4
and refit as necessary