Page 30
LGT/LCT036, 048, 060, 072
Diagnostic Sensors
Units are equipped with two factory-installed thermistors
(RT46 and RT48) located on different points on the
refrigerant circuit.
The thermistors provide the Unit Controller with constant
temperature readings of two specific locations on the
refrigeration circuit. These temperatures are used as
feedback in certain modes of unit operation. In addition,
the Unit Controller uses these temperatures to initiate
alarms such as loss of condenser or evaporator airflow
and loss of charge.
Each thermistor must be specifically placed for proper
unit operation and to initiate valid alarms. See table 13 for
proper locations.
TABLE 13
THERMISTOR LOCATION
Unit
Sensor
Yellow
Figure
LGT/LCT036, 048, 060, 072 RT46 21
LGT/LCT036, 048, 060, 072 RT48 22
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