Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
Remove user display from facia

Measurement:

Measure the resistance between the left hand side of the potentiometer and the soldered connection as shown.
Resistances measured will differ as temperature selector is turned.
Resistances should conform (approximately) with the settings below.
Setting
kOhms
Minimum
Continuity
Middle
50.7 KOhms
Maximum
97 KOhms

Note:
Ensure a good connection is made.