Alarm Codes - Carrier 30XAV Control Manual

7.6 - Alarm codes

The alarm codes are displayed in the Reset Alarms menu,
while the Current Alarms menu and Alarm History /
Major Alarm History include the description of the alarm.
7.6.1 - General/major alarms
JBus Alarm
Alarm description
code code
THERMISTOR FAILURE
1 15001 Evaporator entering water thermistor fault
2 15002 Evaporator leaving water thermistor fault
3 15010 OAT thermistor fault
5 15011 Master/slave common water thermistor fault
6 15012 Suction gas thermistor fault, circuit A
7 15013 Suction gas thermistor fault, circuit B
8 15015 Discharge gas thermistor fault, circuit A
9 15016 Discharge gas thermistor fault, circuit B
10 15018 Condenser subcooling liquid thermistor fault, circuit A
11 15019 Condenser subcooling liquid thermistor fault, circuit B
16 15021 Space temperature thermistor fault
4 15023 Evaporator heater feedback thermistor fault
14 15024 Economizer gas thermistor fault, circuit A
15 15025 Economizer gas thermistor fault, circuit B
12 15033 Compressor motor thermistor fault, circuit A
13 15034 Compressor motor thermistor fault, circuit B
TRANSDUCER FAILURE
17 12001 Discharge transducer fault, circuit A
18 12002 Discharge transducer fault, circuit B
19 12004 Suction transducer fault, circuit A
20 12005 Suction transducer fault, circuit B
21 12010 Oil pressure transducer fault, circuit A
22 12011 Oil pressure transducer fault, circuit B
23 12013 Economizer pressure transducer fault, circuit A
24 12014 Economizer pressure transducer fault, circuit B
25 12024 Water pressure 1 transducer failure (before the pump)
26 12025 Water pressure 2 transducer failure (after the evaporator)
27 12029 Low water pressure
28 12031 Condenser subcooling liquid pressure transducer, circuit A
29 12032 Condenser subcooling liquid pressure transducer, circuit B
COMMUNICATION FAILURE
30 4901 Communication loss with SIOB board, circuit A
31 4902 Communication loss with SIOB board, circuit B
32 4501 Communication loss with Auxiliary Board Number 1
33 4502 Communication loss with Auxiliary Board Number 2
34 4503 Communication loss with Auxiliary Board Number 3
36 4603 Communication loss with Energy Management NRCP2 board As above
37 4701 Communication loss with VLT Board Number 1
38 4702 Communication loss with VLT Board Number 2
39 4704 Communication loss with Fan A1 Drive board
40 4705 Communication loss with Fan A2 Drive board
41 4706 Communication loss with Fan A3 Drive board
42 4707 Communication loss with Fan B1 Drive board
43 4708 Communication loss with Fan B2 Drive board
44 4709 Communication loss with Fan B3 Drive board
PROCESS FAILURE
45 10001 Evaporator freeze protection
46 10005 Low suction temperature, circuit A
47 10006 Low suction temperature, circuit B
52 10014 Customer safety loop failure
78 10090 Flow controller configuration fault
79 10091 Flow controller fault
53 10030 Master/slave communication failure
Reset type Action taken
Automatic, if thermistor
Unit shuts down
reading returns to normal
As above Unit shuts down
As above Unit shuts down
Master/slave operation is
As above disabled and the unit returns to
the stand-alone mode
As above Circuit A shuts down
As above Circuit B shuts down
As above Circuit A shuts down
As above Circuit B shuts down
As above Circuit A shuts down
As above Circuit B shuts down
As above None
As above None
As above Circuit A shuts down
As above Circuit B shuts down
As above Circuit A shuts down
As above Circuit B shuts down
Automatic, if sensor voltage
Circuit A shuts down
reading returns to normal
As above Circuit B shuts down
Automatic (three alarms in
Circuit A shuts down
the last 24 hours) or Manual
As above Circuit B shuts down
Automatic, if sensor voltage
Circuit A shuts down
reading returns to normal
As above Circuit B shuts down
As above Circuit A shuts down
As above Circuit B shuts down
As above Circuit A shuts down
As above Circuit B shuts down
None or unit and pump shut
Automatic
down
As above Circuit A shuts down
As above Circuit B shuts down
Automatic, if communication
Unit shuts down
is re-established
As above Unit shuts down
As above None
As above None
As above None
None
As above Circuit A shuts down
As above Circuit B shuts down
As above Circuit A shuts down
As above Circuit A shuts down
As above Circuit A shuts down
As above Circuit B shuts down
As above Circuit B shuts down
As above Circuit B shuts down
Automatic (the first alarm in Unit shuts down, but the pump
the last 24 hours) or Manual continues to run
As above Circuit A shuts down
As above Circuit B shuts down
Automatic (the first alarm in
Unit shuts down
the last 24 hours) or Manual
Manual Unit shuts down
Automatic (the first alarm in Compressors and the
the last 24 hours) or Manual evaporator pump are stopped
As above Unit shuts down
Possible cause
Defective thermistor
As above
As above
As above
As above
As above
As above
As above
As above
As above
As above
As above
As above
As above
As above
As above
Defective transducer or
installation fault
As above
As above
As above
As above
As above
As above
As above
As above
As above
Water loop pressure
too low, risk of pump
cavitation
Defective transducer
As above
Bus installation fault or
defective board
As above
As above
As above
As above
As above
As above
As above
As above
As above
As above
As above
As above
As above
No water flow,
defective thermistor
Pressure sensor
defective, EXV blocked
or lack of refrigerant
As above
Customer interlock
input set on
Defective flow
controller or wiring error
As above
As above
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