Norcold 9182 Service Manual & Parts List page 23

Screen No.4 - Fin Temperature Sensed by the Thermistor
The Thermistor is mounted on the 11th (from the right) cooling fin and monitors the refrigerator cabinet temperature
Figure 8
A. Identifies information screen
B. Cooling Fin Temperature (° F).
The following procedure verifies the thermistor is functioning:
1. Remove the thermistor from the fin and immerse thermistor end in ice water. The temperature
displayed on Screen No. 4 should be between 29 ° F and 35° F.
2. Remove the thermistor from the ice water and hold thermistor end in hand. The temperature
displayed on Screen No. 4 should rise.
3. If the temperature does not fall and rise when performing steps 1 and 2, replace the thermistor.
Screen No. 5 AC Electric Input Voltage
This screen displays AC input voltage measured by the control.
Figure 9
A. Identifies information screen.
B. The refrigerator control displays AC input voltage measured by the control over the range of 108
132 VAC.
C. Indicates AC electric mode of operation.
To verify:
1. Measure the input voltage at the receptacle supplying the AC voltage to the refrigerator. The voltage
should be +/- 10 VAC of the control's display.
2. Measure the output voltage of the control board to the AC heater. The voltage should equal the
input voltage measured in Step 1.
A
B
A
B
22
C