Alarm Codes - Carrier 30XA Operation Instructions Manual

8.6 - Alarm codes

The alarm codes are displayed in the Reset Alarms menu,
while in the Current Alarm menu and alarm histories textual
information regarding the event is provided.
8.6.1 - General alarm codes
Alarm No. Alarm code Alarm description
THERMISTOR FAILURE
1 15001 Evaporator entering water thermistor fault
2 15002 Evaporator leaving water thermistor fault
3 15003 Defrost thermistor fault, circuit A
4 15004 Defrost thermistor fault, circuit B
5 15006 Condenser entering water thermistor fault
6 15007 Condenser leaving water thermistor fault
7 15008 Reclaim condenser entering
thermistor fault, circuit A
8 15009 Reclaim condenser leaving
thermistor fault, circuit B
9 15010 OAT thermistor fault
10 15011 Master/slave common water thermistor fault
11 15012 Suction gas thermistor fault, circuit A
12 15013 Suction gas thermistor fault, circuit B
13 15014 Suction gas thermistor fault, circuit C
14 15015 Discharge gas thermistor fault, circuit A
15 15016 Discharge gas thermistor fault, circuit B
16 15017 Discharge gas thermistor fault, circuit C
17 15036 Dry Cooler Leaving thermistor failure
18 15018 Condenser subcooling liquid thermistor fault, circuit A
19 15019 Condenser subcooling liquid thermistor fault, circuit B
20 15021 Space temperature thermistor fault
21 15023 Evaporator heater feedback thermistor fault
22 15024 Economizer gas thermistor fault, circuit A
23 15025 Economizer gas thermistor fault, circuit B
24 15026 Economizer gas thermistor fault, circuit C
25 15030 Free cooling liquid thermistor fault, circuit A
26 15031 Free cooling liquid thermistor fault, circuit B
TRANSDUCER FAILURE
27 12001 Discharge transducer fault, circuit A
28 12002 Discharge transducer fault, circuit B
29 12003 Discharge transducer fault, circuit C
30 12004 Suction transducer fault, circuit A
31 12005 Suction transducer fault, circuit B
32 12006 Suction transducer fault, circuit C
33 12007 Heat reclaim pump-down pressure transducer fault,
circuit A
34 12008 Heat reclaim pump-down pressure transducer fault, circuit B As above
35 12010 Oil pressure transducer fault, circuit A
36 12011 Oil pressure transducer fault, circuit B
37 12012 Oil pressure transducer fault, circuit C
38 12013 Economizer pressure transducer fault, circuit A
39 12014 Economizer pressure transducer fault, circuit B
40 12015 Economizer pressure transducer fault, circuit C
41 12016 Free cooling pump inlet pressure transducer fault,
circuit A
42 12017 Free cooling pump outlet pressure transducer fault, circuit A
43 12018 Free cooling pump inlet pressure transducer fault, circuit B As above
44 12019 Free cooling pump outlet pressure transducer fault, circuit B
47 12024 Water pressure 1 transducer failure (before the evaporator) As above
48 12025 Water pressure 2 transducer failure (after the evaporator)
49 12026
Water pressure 3 transducer failure (before the filter)
50 12027 Water pressure 4 transducer failure (after the filter)
52 12029 Low water pressure
34
Action taken
Reset type
Automatic, if thermistor Unit shuts down
reading returns to normal
As above Unit shuts down
As above Cooling mode: Alert is displayed
Heating mode: Circuit A shuts down
As above Cooling mode: Alert is displayed
Heating mode: Circuit B shuts down
As above Heating mode: Unit shuts down
As above As above
As above Unit returns to the air-cooled
mode
As above As above
As above Unit shuts down
As above Master/slave operation is 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 C shuts down
As above Circuit A shuts down
As above Circuit B shuts down
As above Circuit C shuts down
As above None
As above Unit returns to the air-cooled mode As above
As above As above
As above None
As above None
As above Economizer function disabled
As above As above
As above As above
As above Free cooling disabled
As above As above
Automatic, if sensor Circuit A shuts down
voltage reading
returns to normal
As above Circuit B shuts down
As above Circuit C shuts down
As above Circuit A shuts down
As above Circuit B shuts down
As above Circuit C shuts down
As above Reclaim session stopped and the
unit returns to the air-cooled
mode
As above
As above Circuit A shuts down
As above Circuit B shuts down
As above Circuit C shuts down
As above Circuit A shuts down
As above Circuit B shuts down
As above Circuit C shuts down
As above Free cooling stopped and the unit
returns to mechanical cooling
As above As above
As above
As above As above
Alert - the values read by the
hydronic kit function are not
reliable
As above As above
As above As above
As above As above
As above Alert – the unit continues to
operate
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
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
As above
As above
As above
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