FLOW SENSOR RESISTANCE THROUGH HARNESS

Isolate Mains Power to appliance as per TOPs P4

Set Multimeter to Resistance

Disconnect plug X6 from PCB (6 way plug 2nd from right)

Measure resistance across the pink (pin 6) and black (pin 5) wires.
Ensure thermistor is fitted correctly onto pipework.

Resistances vary with temperature and should conform approximately to the table below:

Note: Clicking on the resistance table will switch between table and graph view.