Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
Remove connector from flow sensor

Measurement:

Measure the resistance (continuity) across the flow sensor harness leads.
Connections are;
  • X17 connector pins 5,6 & 7 to corresponding connection on flow sensor connector.
    Expected resistance is continuity (zero resistance).