Page 24
Diagnostic Sensors
Units are equipped with four factory-installed thermistors
(RT46 - RT49) located on different points on the
refrigerant circuit.
The thermistors provide the Unit Controller with constant
temperature readings of four 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 figure 23
and figure 24 proper locations.
FIGURE 23
BLUE
RT47
YELLOW
RT46
22J06
22J06
THERMISTOR LOCATION - EVAPORATOR COIL
RT46, RT47
To Next Page
Loading...
Need help?
General
