Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove diverter head from body, keep harness plugged into diverter head
Remove plug X6a from PCB
Remove plug X6a from PCB
Measurement:
Measure the resistance between each of the points listed
in the table below.
The readings measured depend on the position
of the diverter valve spindle.
Spindle extended = DHW position
Spindle retracted = CH position
Resistance readings expected should be
approximately as per the table below:
in the table below.
The readings measured depend on the position
of the diverter valve spindle.
Spindle extended = DHW position
Spindle retracted = CH position
Resistance readings expected should be
approximately as per the table below:
| Pin | |
| Brown&Blue (CH position) | |
| Blue&Black (CH position) | |
| Brown&Blue (HW position) | Blue&Black (HW position) |
Isolate as per TOPs P4
and refit as necessary