Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Disconnect connector J3 from the control PCB
Measurement:
Inspect the condition of the harness between
the diverter valve and the PCB.
Check for continuity between each of the three wires in turn from the diverter valve to pins 1, 2 and 3 at J3 connector on the control PCB.
the diverter valve and the PCB.
Check for continuity between each of the three wires in turn from the diverter valve to pins 1, 2 and 3 at J3 connector on the control PCB.
Isolate as per TOPs P4
and refit as necessary