Thermistors (Sensors); Room Thermistor; Temperature Compensation - LG LMX21981 Series Training Manual

LMX21981xx

THERMISTORS (SENSORS)

Thermistors are NTC (Negative Temperature Coefficient). As the temperature
DECREASES, the resistance INCREASES. As the resistance INCREASES, the voltage
DECREASES. Refer to page 74 for the Temperature/Resistance Chart.

ROOM THERMISTOR

TEMPERATURE COMPENSATION

LMX21981xx
Orange to Orange – Defrost (0.5 – 4.5
V or Resistance)
DC
White to White – Refrigerator (0.5 – 4.5
V or Resistance)
DC
Blue to Blue – Freezer (0.5 – 4.5 V
Resistance)
BROWN to BROWN – (0.5 – 4.5 V
Resistance:
Disconnect the wire connector. Set the
meter to Ω. Refer to page 74 for the
Temperature/Resistance Chart.
Opening jumpers JCR1and 2 will increase
the refrigerator temperature by 1ºC each.
Opening jumpers JCR3 and 4 will decrease
the refrigerator temperature by1ºC each.
1°C = 1.8° F
Page 52
REFRIGERATOR
or
DC
DC)
TRAINING MANUAL