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SENSORS
Compressor Discharge Line
Temperature Sensor
This table shows the corresponding voltage, resistance
and temperature readings for the Discharge
Temperature Sensor when measured across pins 1 and
10. The power source for the Discharge Temperature
Sensor is 3.2VDC.
4TWL9048A-SF-1C-EN
Figure 3. Discharge Temperature Sensor
9
8
7
6
18
17
16
15
14
A working Compressor Discharge Temperature Sensor
is required for:
•
Protection (High/Low Temperature)
•
Preheating (Sump Heat)
•
Outdoor EEV Control
•
Diagnostics; Reverse rotation, Flooding, Charge
Level
The Discharge Temperature Sensor control contains an
NTC thermistor input for sensing the Compressor
Discharge Temperature. The thermistor has a nominal
resistance of
10k ohms at 75°F. The minimum range
required for the Discharge Temperature input is —31°F
to 302°F. when measured across pins 1 and 10.
N N o o t t e e : : Secure Installation of Discharge Sensor is
required for reliable compressor & system
operation.
5
4
3
2
1
13
12
11
10
13
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