Troubleshooting, Pressure transducer troubleshooting and leds, Pressure transducer troubleshooting – Orion System Two Condenser Head Pressure II Module User Manual
Page 14: Using leds to verify operation
Zone
Zone
TROUBLESHOOTING
Two Condenser Head Pressure II Module Technical Guide
14
Pressure Transducer Troubleshooting and LEDs
Table 7: Two Condenser Head Pressure II Module
Transducer Chart
Pressure Transducer Troubleshooting
If you suspect there is a problem with the Module related to pressure
transducer measurements, reference Table 7 below.
Pressure Sensor Chart
Voltage Pressure Voltage Pressure
0.5
0
2.6
350
0.6
17
2.7
367
0.7
33
2.8
384
0.8 50
2.9
400
0.9 67
3.0
417
1.0 83
3.1
434
1.1
100
3.2
450
1.2
117
3.3
467
1.3
133
3.4
484
1.4
150
3.5
500
1.5
167
3.6
517
1.6
183
3.7
534
1.7
200
3.8
550
1.8
217
3.9
567
1.9
233
4.0
584
2.0
250
4.1
600
2.1
267
4.2
617
2.2
283
4.3
634
2.3
300
4.4
650
2.4
317
4.5
667
2.5
334
Using LEDs to Verify Operation
The Two Condenser Head Pressure II Module is equipped with LEDs
that can be used to verify operation and perform troubleshooting. There
are LEDs for communication, operation modes, diagnostic codes, and
relays. The Two Condenser Head Pressure Module has eight LEDs—
one for power, one for operation status, one for communication, one
for alarms, and four for compressor relays. See Figure 6 for the LED
locations. The LEDs associated with these inputs and outputs allow you
to see what is active without using a voltmeter.
Status LEDs
“COMM” - This LED will light up to indicate Communications with
the VCM-X series or SA series controller. If Communications are estab-
lished, the COMM LED will blink. You should not see this LED light
up in stand-alone mode, because there would be no communications
with the VCM-X series or SA series controller.
“ALARM” - This is the diagnostic blink code LED. It will light up and
blink out diagnostic codes. See Table 8 below for Diagnostic Blink
Code descriptions. The blink code descriptions are also located on the
Module’s front cover.
No. of
Blinks
Alarm
0
No Problems
1
No Sensors Detected
2
High Head Pressure Detected
3
Low Head Pressure Detected
Table 8: ALARM LED Blink Codes
“STAT” - This is the status blink code LED. It will light up and fi rst
blink the address of the Module. It will then blink out the quantity of
sensors installed. See Table 9 below for Status Blink Code descriptions.
The blink code descriptions are also located on the Module’s front cover.
No. of
Blinks
Status
Random
Blinks Quantity of Sensors
Installed
Table 9: STAT LED Blink Codes