Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
CH temperature control to max
Disconnect user interaction connector at the PCB
Gain access to User Interaction PCB ensuring that the
CH temperature control remains set to Max

Measurement:

Test 1. Measure for resistance across the CH temperature potentiometer at test point 1 as illustrated - Expected resistance 0 - 10 ohms.
Test 2. Measure for resistance across the CH temperature potentiometer at test point 2 as illustrated - Expected resistance approximately 2.4 KOhms.