Carrier 30XA080-500 Controls, Start-Up, Operation, Service And Troubleshooting Instructions page 68

Table 39 -- Alarm Codes
PREFIX
CODE
th
Pr
SUFFIX
CODE
01
O2
O3
O4
O6
O7
O8
O9
10
11
12
13
14
15
16
17
18
19
21
23
24
25
26
01
O2
O3
O4
O5
O6
O7
O8
10
11
12
13
14
ALARM
NUMBER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
2O
21
22
23
24
25
26
27
28
29
3O
31
32
33
34
35
36
CON J Carrier Comfort Network@
CPM J Compressor Protection Module
EMM J Energy Management Module
EXV J Electronic Expansion Valve
MOP J Maximum Operating Pressure
*NRCP2 is the Energy Management Board.
ALARM DESCRIPTION
Cooler Entering Fluid
Thermistor
Cooler Leaving Fluid
Thermistor
Circuit A Defrost Thermistor
Circuit B Defrost Thermistor
Condenser Entering
Fluid Thermistor
Condenser Leaving
Fluid Thermistor
Reclaim Condenser
Entering Thermistor
Reclaim Condenser
Leaving Thermistor
OAT Thermistor
Master/Slave Common Fluid
Thermistor
Circuit A Suction Gas
Thermistor
Circuit B Suction Gas
Thermistor
Circuit C Suction Gas
Thermistor
Circuit A Discharge Gas
Thermistor
Circuit B Discharge Gas
Thermistor
Circuit C Discharge Gas
Thermistor
Circuit A Condenser Sub-
cooling Liquid Thermistor
Circuit B Condenser Sub-
cooling Liquid Thermistor
Space Temperature
Thermistor
Cooler heater feedback
thermistor
Circuit A Economizer Gas
Thermistor
Circuit B Economizer Gas
Thermistor
Circuit C Economizer Gas
Thermistor
Circuit A Discharge
Transducer
Circuit B Discharge
Transducer
Circuit C Discharge
Transducer
Circuit A Suction Transducer
Circuit B Suction Transducer
Circuit C Suction Transducer
Circuit A Reclaim Pump-
down Pressure Transducer
Circuit B Reclaim Pump-
down Pressure Transducer
Circuit A Oil Pressure
Transducer
Circuit B Oil Pressure
Transducer
Circuit C Oil Pressure
Transducer
Circuit A Economizer
Pressure Transducer
Circuit B Economizer
Pressure Transducer
LEGEND
MTA
OAT
SST
UL
REASON FOR ALARM PROBABLE CAUSE
Temperature measured
by the controller is
outside of the range
of -40 F to 245 F
Measured voltage is
0 dc
i Must Trip Amps
i Outdoor Air Temperature
i Saturated Suction Temperature
i Underwriters' Laboratories
ACTION TAKEN
BY CONTROL
Unit be shut down or
not allowed to start
None
Unit be shut down or
not allowed to start
Dual chiller deacti-
vated. Master and
slave machines
operate in stand-
alone mode
Circuit shut down or
not allowed to start
None
Alarm tripped
None
Circuit economizer
function disabled
Circuit shut down or
not allowed to start
None
Circuit shut down or
not allowed to start
RESET
TYPE
Automatic
Automatic
Faulty Sensor,
wiring error or failed
main base board
Configuration error
Faulty Sensor,
wiring error or failed
main base board
Faulty Sensor,
wiring error, failed
EXV or CPM board
Configuration error
Faulty Sensor, wiring
error, failed EMM
board
Configuration error
Faulty Sensor,
wiring error, failed
EXV board
Faulty transducer,
wiring error, failed
main base board or
fan board
Configuration error
Faulty transducer,
wiring error, failed
CPM board
68