Table 7.3. Column Temperature/Humidity Sensors; Table 7.4. Temperature - Resistance Values - Perlick CR30R Series Service Manual

Column Refrigeration Service Manual
7.4 Temperature Probes
Below is a table showing the type of probe used for sensing temperatures for each model. The probe is a
10K ohm NTC probe. See resistance values below.
Temperature
Model
Sensor 1
NTC Thermistor NTC Thermistor NTC Thermistor NTC Thermistor
Refrigerator
Compartment
Freezer
Compartment
Single-Zone
Wine
Dual-Zone
Wine
Associated
P1, L1, H1
Alarms
**NOTE: Alarm will stop once the cause of the alarm is corrected.
P1, P2, P3, P4, P5, P6 = Open/Disconnected NTC Thermistor or Temperature/Humidity Sensor
L1, L2, L3, L4, L5, L6 = Low Temperature Alarm (Sensed temperature is below X degrees F below setpoint for over 30
minutes)
H1, H2, H3, H4, H5, H6 = High Temperature Alarm (Sensed temperature is above X degrees F above setpoint for over
30 minutes)
r5, r6 = Open/Disconnected Humidity Sensor
d1 = door open alarm
Troubleshooting - To troubleshoot, check all connections and using a multimeter check resistance values.
Temperature Temperature
(°C)
-30
-25
-20
-15
-10
-5
0
5
10
Return to Table of Contents
Temperature
Sensor 2
Main
Deli Drawer
Main
P2, L2, H2

Table 7.3. Column Temperature/Humidity Sensors

Resistance
(°F) (OHMS)
-22 111300
-13 86430
-4 67770
5 53410
14 24270
23 33900
32 27280
41 22050
50 17960

Table 7.4. Temperature - Resistance Values

Temperature Temperature
Sensor 3 Sensor 4
Meat Drawer Evap Temp
Evap Temp
Evap Temp
Evap Temp
P3, L3, H3 P4, L4, H4
Temperature
(°C)
15
20
25
30
35
40
45
50
55
Temperature Temperature
Sensor 5
Temp/Humidity Temp/Humidity
Sensor
Produce
Drawer
Main
Compartment
Lower
Compartment Compartment
P5, L5, H5, R5 P6, L6, H6, R6
Temperature Resistance
(°F) (OHMS)
59
68
77
86
95
104
113
122
131
Sensor 6
Sensor
Upper
14690
12090
10000
8313
6940
5827
4911
4160
3536
71