Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
Remove connector FA2 from the PCB

Measurement:

Measure the resistance between the condensate electrode and connector FA2.
Expect continuity / zero resistance.
Also visually inspect the condition of the harness throughout its length.
Is the resistance measured as expected and the harness in good condition?
Note:
The wire running between FA2 and the condensate electrode changes colour (black at the electrode end and orange by the PCB).