Revision Date – 15/07/2020 page 30
8.4 Test Thermistor
Purpose: To verify that the thermistor is operating correctly.
Single Zone main circuit board.
Dual Zone main circuit board.
Disconnect all power leads from the back of the
fridge.
Remove main circuit board (refer to section 9.6).
Locate and disconnect the 2 pin male thermistor
plug on the main circuit board.
Please note, for Dual zone fridges, there are two
thermistors, please ensure you test both
thermistor.
Using an ohm meter (Ω), measure the resistance
value of the thermistor.
To do this, measure the resistance between the
two metal contacts in the plastic connector plug
as shown.
NOTE: The resistance of the thermistor will
increase as the fridge gets colder.
Measure the temperature of the plastic liner at the
base of the fridge.
Thermistor resistance values
Temperature of plastic
liner at base of fridge
NOTE: At approximately 20°C (68°F) degrees,
the thermistor should read between 8-14k Ω.
Check the measured resistance against the
resistance values in the table for the given
temperature.
NOTE: Allow a variation of ± 5k Ω between the
measured resistance and the values in
the table.
Thermistor Socket
Rear Zone
Thermistor Socket
Front Zone
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