31 ED 15121
Table 14. Modbus Fault Alarms
Fault Alarms
Alarm Class Monitoring
Alarm Index
(Holding Register
30)
Alarm Code
(Holding
Register 33)
Individual Alarm
Monitoring
Holding Registers
(0=Normal,
1=Alarm)
Alarm Description
32551 440 COMP SHUTDOWN - Low pressure ratio Circuit #1, Comp #1
32583 442 COMP SHUTDOWN - Low pressure ratio Circuit #2, Comp #1
32615 444 COMP SHUTDOWN - Low pressure ratio Circuit #3, Comp #1
127
32771 445 COMP SHUTDOWN - Low pressure ratio Circuit #4, Comp #1
128 32771 446 UNIT SHUTDOWN - Outside Air Temp Sensor Fault
34599 478 COMP SHUTDOWN – Motor Temp High Circuit #1, Comp #1
34631 480 COMP SHUTDOWN – Motor Temp High Circuit #2, Comp #1
34663 482 COMP SHUTDOWN – Motor Temp High Circuit #3, Comp #1
135
34695 483 COMP SHUTDOWN – Motor Temp High Circuit #4, Comp #1
34855 734 COMP SHUTDOWN – Motor Temp Sensor Fault Circuit #1, Comp #1
34887 736 COMP SHUTDOWN – Motor Temp Sensor Fault Circuit #2, Comp #1
34919 738 COMP SHUTDOWN – Motor Temp Sensor Fault Circuit #3, Comp #1
136
34951 739 COMP SHUTDOWN – Motor Temp Sensor Fault Circuit #4, Comp #1
36391 509 COMP SHUTDOWN - Condenser Pressure Sensor Fault Circuit #1, Comp #1
36423 511 COMP SHUTDOWN - Condenser Pressure Sensor Fault Circuit #2, Comp #1
36455 513 COMP SHUTDOWN - Condenser Pressure Sensor Fault Circuit #3, Comp #1
142
36487 514 COMP SHUTDOWN - Condenser Pressure Sensor Fault Circuit #4, Comp #1
37159 517 COMP SHUTDOWN - Condenser Pressure High Circuit #1, Comp #1
37191 519 COMP SHUTDOWN - Condenser Pressure High Circuit #2, Comp #1
37223 521 COMP SHUTDOWN - Condenser Pressure High Circuit #3, Comp #1
145
37255 522 COMP SHUTDOWN - Condenser Pressure High Circuit #4, Comp #1
37671 529 COMP SHUTDOWN - Discharge Temp Sensor Fault Circuit #1, Comp #1
37703 531 COMP SHUTDOWN - Discharge Temp Sensor Fault Circuit #2, Comp #1
37735 533 COMP SHUTDOWN - Discharge Temp Sensor Fault Circuit #3, Comp #1
147
37767 534 COMP SHUTDOWN - Discharge Temp Sensor Fault Circuit #4, Comp #1
37927 535 COMP SHUTDOWN - Discharge Temp High Circuit #1, Comp #1
37959 537 COMP SHUTDOWN - Discharge Temp High Circuit #2, Comp #1
37991 539 COMP SHUTDOWN - Discharge Temp High Circuit #3, Comp #1
148
38023 540 COMP SHUTDOWN - Discharge Temp High Circuit #4, Comp #1
150 38403 542 UNIT SHUTDOWN - Evaporator Water Flow Loss
151 38659 543 UNIT SHUTDOWN - Evaporator Leaving Water Temp Low (Freeze)
39207 545 COMP SHUTDOWN - Evaporator Pressure Low Circuit #1, Comp #1
39239 547 COMP SHUTDOWN - Evaporator Pressure Low Circuit #2, Comp #1
39271 549 COMP SHUTDOWN - Evaporator Pressure Low Circuit #3, Comp #1
153
39303 550 COMP SHUTDOWN - Evaporator Pressure Low Circuit #4, Comp #1
39719 552 COMP SHUTDOWN - Evaporator Pressure Sensor Fault Circuit #1 Comp #1
39715 554 COMP SHUTDOWN - Evaporator Pressure Sensor Fault Circuit #1 Comp #1
39783 556 COMP SHUTDOWN - Evaporator Pressure Sensor Fault Circuit #1 Comp #1
155
39815 557 COMP SHUTDOWN - Evaporator Pressure Sensor Fault Circuit #1 Comp #1
41225 583 COMP LOCKOUT - Number of Allowed Re-Starts Exceeded Circuit #1, Comp#1
41827 585 COMP LOCKOUT - Number of Allowed Re-Starts Exceeded Circuit #2, Comp#1
41319 587 COMP LOCKOUT - Number of Allowed Re-Starts Exceeded Circuit #3, Comp#1
161
41351 588 COMP LOCKOUT - Number of Allowed Re-Starts Exceeded Circuit #4, Comp#1
162 41475 589 UNIT SHUTDOWN - Evaporator Leaving Water Temp Sensor Fault
163 41731 755 Evaporator Entering Water Temperature Sensor Failure
42535 601 COMP SHUTDOWN - Mechanical High Pressure Trip Circuit #1, Comp #1
42567 603 COMP SHUTDOWN - Mechanical High Pressure Trip Circuit #2, Comp #1
42599 605 COMP SHUTDOWN - Mechanical High Pressure Trip Circuit #3, Comp #1
166
42631 606 COMP SHUTDOWN - Mechanical High Pressure Trip Circuit #4, Comp #1
43815 631 COMP SHUTDOWN – Oil Level Low Circuit #1, Comp #1
43847 633 COMP SHUTDOWN – Oil Level Low Circuit #1, Comp #2
43879 635 COMP SHUTDOWN – Oil Level Low Circuit #1, Comp #3
171
43911 636 COMP SHUTDOWN – Oil Level Low Circuit #1, Comp #4
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