Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove knob from CH Potentiometer on the Main PCB
Gain access to User Control PCB, use insulation mat as required
Gain access to User Control PCB, use insulation mat as required
Measurement:
Measure across left and middle pins above the CH temperature
control knob, resistance values obtained should be as follows:
Approximately 500 ohms with potentiometer turned fully clockwise.
Approximately 0 ohms with potentiometer turned fully anticlockwise.
control knob, resistance values obtained should be as follows:
Approximately 500 ohms with potentiometer turned fully clockwise.
Approximately 0 ohms with potentiometer turned fully anticlockwise.
Isolate as per TOPs P4
and refit as necessary