Zone
Zone
Pioneer Gold 1.10 & 2.05 Controller Technical Guide
TROUBLESHOOTING
1-35
Suction Pressure Transducer & Discharge Pressure Sensor Testing
Suction Pressure Transducer Testing
for R410A 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.
Table 5: Coil Pressure/Voltage for Suction
Pressure Transducers - R410A Refrigerant
Suction Pressure Transducer
Coil Pressure – Voltage Chart for
R410A Refrigerant 0-500 PSI
Pr
essur
e
PSI
Signal
DC V
olts
Pr
essur
e
PSI
Signal
DC V
olts
20
0.66
280
2.74
40
0.82
300
2.9
60
0.98
320
3.06
80
1.14
340
3.22
100
1.3
360
3.38
120
1.46
380
3.54
140
1.62
400
3.7
160
1.78
420
3.86
180
1.94
440
4.02
200
2.1
460
4.18
220
2.26
480
4.34
240
2.42
500
4.5
260
2.58
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 Sensor is
probably defective and will need to be replaced.
Discharge Pressure Transducer
Pressure – Voltage Chart for
R410A Refrigerant 0-667 PSI
Pr
essur
e
PSI
Signal
DC V
olts
Pr
essur
e
PSI
Signal
DC V
olts
20
0.62
360
2.66
40
0.74
380
2.78
60
0.86
400
2.9
80
0.98
420
3.02
100
1.1
440
3.14
120
1.22
460
3.26
140
1.34
480
3.38
160
1.46
500
3.5
180
1.58
520
3.62
200
1.7
540
3.74
220
1.82
560
3.86
240
1.94
580
3.98
260
2.06
600
4.1
280
2.18
620
4.22
300
2.3
640
4.34
320
2.42
660
4.46
340
2.54
Table 6: Discharge Pressure/Voltage for Discharge
Pressure Sensors
