AAON ASM02780 User Manual

1-27
Pioneer Gold 3.00 Controller Technical Guide
Suction Pressure Transducer Testing
for R410-A Refrigerant 0-500 psi
The Suction Pressure is obtained by using the Suction Pressure
Transducer, which is connected into the Suction Line of the
compressor.
Use the voltage column to check the Suction Pressure Transducer
while connected to the Pioneer Gold Controller. The controller
must be powered for this test. Read voltage with a meter set on
DC volts. Place the positive lead from the meter on the SPT
input terminal located on the controller. Place the negative lead
from the meter on the ground (COM) terminal located adjacent
to the SPT terminal on the controller. Use a refrigerant gauge
set to measure the Suction Line Pressure near where the Suction
Pressure Transducer is connected to the Suction Line. Measure
the voltage at the SPT and COM terminals and compare it to the
appropriate chart depending on the refrigerant you are using. If
the pressure/voltage readings do not align closely with the chart,
your Suction Pressure Transducer is probably defective and will
need to be replaced.
Discharge Pressure Sensor Testing
0-667 psi
The Discharge Pressure is obtained by using the Discharge
Pressure Sensor, which is connected into the Discharge Line of
the compressor.
Use the voltage column to check the Discharge Pressure Sensor
while connected to the Pioneer Gold Controller. The controller
must be powered for this test. Read voltage with a meter set on
DC volts. Place the positive lead from the meter on the DPT
input terminal located on the controller. Place the negative lead
from the meter on the ground (COM) terminal located adjacent
to the DPT terminal on the controller. Use a refrigerant gauge set
to measure the Suction Line Pressure near where the Discharge
Pressure Sensor is connected to the Discharge Line. Measure the
voltage at the terminals DPT and COM terminals and compare
it to the appropriate chart depending on the refrigerant you
are using. If the pressure/voltage readings do not align closely
with the chart, your Discharge Pressure Transducer is probably
defective and will need to be replaced.
Suction Pressure Transducer Coil Pressure –
Voltage Chart for R410A Refrigerant 0-500 psi
Pressure
PSI
Signal
DC Volts
Pressure
PSI
Signal
DC Volts
20  280 
40  300 
60  320 
80  340 
100  360 
120  380 
140  400 
160  420 
180  440 
200  460 
220  480 4.34
240  500 
260 
Discharge Pressure Transducer Pressure –
Voltage Chart for R410-A Refrigerant 0-667 PSI
Pressure
PSI
Signal
DC Volts
Pressure
PSI
Signal
DC Volts
20  360 
40  380 
60  400 
80  420 
100  440 
120  460 
140  480 
160  500 
180  520 
200  540 
220  560 
240  580 
260  600 
280  620 
300  640 4.34
320  660 
340 
Table 1-8: Coil Pressure/Voltage for Suction
Pressure Transducers - R410-A
Refrigerant
Table 1-9: Discharge Pressure/Voltage for
Discharge Pressure Transducers
TROUBLESHOOTING
Suction Pressure and Discharge Pressure Transducer Testing

AAON ASM02780 Specifications

General

Brand	AAON
Model	ASM02780
Category	Controller
Language	English