16
4TWL9048A-SF-1C-EN
Suction Line Pressure
Transducer
This table shows the corresponding voltage and
pressure readings for the Suction Line Pressure
Transducer when measured across pins 7 and 8.
35(6685( 36,*
92/76 '&
3,1 72 3,1
Figure 7. Suction Pressure Transducer
Pins 7 (White) & 8 (Black)
123456789
101112131415161718
Aworking Suction Pressure Sensor is required for the
following:
•Start Up (Pressure Limits)
•LowPressure,Loss of Charge Protection
• Indoor Coil Freeze Protection
• Outdoor EEV Control (Target Super Heat)
•Diagnostics;Reverse Rotation,Charge Level,
Indoor/Outdoor Airflow
The Suction Pressure Transducer control is measured
across pins 7 and 8 and has an active 0–4.9VDC
transducer input for sensing low suction pressure.
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Sump Heat Control
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