33
No. Code
Alarm description
Reset type
Action taken
Possible cause
80
10078 Circuit A High Discharge Gas Temperature Manual
Circuit A shuts down
Defective transducer,
max. condensing
temperature setpoint too
low or refrigerant charge
too high
81
10079 Circuit B High Discharge Gas Temperature Manual
Circuit B shuts down
As above
82
10080 Circuit C High Discharge Gas Temperature Not applicable to this unit
83
10081 Circuit A Suction valve closed
Manual
Circuit A shuts down
Economizer pressure
transducer defective,
suction valve fault
84
10082 Circuit B Suction valve closed
Manual
Circuit B shuts down
As above
85
10083 Circuit C Suction valve closed
Not applicable to this unit
86
10087 Circuit A Slide Valve Control Unverifiable
Manual
None
Defective or incorrectly
wired solenoid valves,
defective current
transformer
87
10088 Circuit B Slide Valve Control Unverifiable
Manual
None
As above
88
10089 Circuit C Slide Valve Control Unverifiable
Not applicable to this unit
89
10090 Cooler Flow Switch Setpoint Configuration
Failure
Manual
Unit is not allowed to restart Defective flow controller
or wiring error
90
10091 Cooler Flow Switch Failure
Automatic (the first alarm
within the last 24 hours) or
Manual
Compressors and the
evaporator pump are stopped
As above
91
10100 Electrical Box Fan Failure
Manual
Unit shuts down
Electrical box fan
malfunction or fan current
probe malfunction
92
10097 Water Exchanger Temperature Sensors
Swapped
Manual
Unit shuts down
Leaving water tempera-
ture is higher than entering
water temperature
Maintenance alarms
93
13nnn Service Maintenance Alert Number
001: Circuit A Loss of charge
002: Circuit B Loss of charge
004: Water loop size warning
005: Air exchanger cleanness warning
006: Cooler pump 1 servicing required
007: Cooler pump 2 servicing required
008: Condenser pump 1 servicing required
010: Water filter servicing required
011: Compressor A oil filter servicing required
012: Compressor B oil filter servicing required
015: Replacement of expansion valve
required on circuit A
016: Replacement of expansion valve
required on circuit B
Manual
None
Preventive maintenance
date has passed;
servicing action required;
contact Carrier Service
Agency
Software failure
94
55001 Database Module Failure
Manual
Unit shuts down
Software problem.
Contact Carrier Service
95
56001 Lenscan Module Failure
Manual
Unit shuts down
As above
Device failure
96
57020 Main EXV stepper motor Failure - cir A
Manual
Circuit A shuts down
EXV motor fault
97
57021 Main EXV stepper motor Failure - cir B
Manual
Circuit B shuts down
EXV motor fault
98
57022 Main EXV stepper motor Failure - cir C
Not applicable to this unit
99
57023 EXV eco stepper motor Failure - cir A
Manual
Circuit A shuts down
Eco EXV motor fault
100 57024 EXV eco stepper motor Failure - cir B
Manual
Circuit B shuts down
Eco EXV motor fault
101 57025 EXV eco stepper motor Failure - cir C
Not applicable to this unit
102 10050 Refrigerant Leakage Detection
Automatic
None
Refrigerant leak or leak
detector defective
Compressor alarms
103 1101
Compressor A Motor temperature too high Manual
Unit shuts down
Motor/wiring fault
104 1102
Compressor A Motor temperature out of
range
Manual
Unit shuts down
Probe defective or
incorrect wiring