Carrier 30XW - Alarm Codes and Drive Alarms

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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 Reset type
Action taken Possible cause
THERMISTOR FAILURE
1 15001 Evaporator entering water thermistor fault Automatic, if thermistor
reading returns to normal
Unit shuts down Defective thermistor
2 15002 Evaporator leaving water thermistor fault As above Unit shuts down As above
3 15003 Defrost thermistor fault, circuit A As above Cooling mode: Alert is displayed
Heating mode: Circuit A shuts down
As above
4 15004 Defrost thermistor fault, circuit B As above Cooling mode: Alert is displayed
Heating mode: Circuit B shuts down
As above
5 15006 Condenser entering water thermistor fault As above Heating mode: Unit shuts down As above
6 15007 Condenser leaving water thermistor fault As above As above As above
7 15008 Reclaim condenser entering
thermistor fault, circuit A
As above Unit returns to the air-cooled
mode
As above
8 15009 Reclaim condenser leaving
thermistor fault, circuit B
As above As above As above
9 15010 OAT thermistor fault As above Unit shuts down As above
10 15011 Master/slave common water thermistor fault As above Master/slave operation is disabled
and the unit returns to the
stand-alone mode
As above
11 15012 Suction gas thermistor fault, circuit A As above Circuit A shuts down As above
12 15013 Suction gas thermistor fault, circuit B As above Circuit B shuts down As above
13 15014 Suction gas thermistor fault, circuit C As above Circuit C shuts down As above
14 15015 Discharge gas thermistor fault, circuit A As above Circuit A shuts down As above
15 15016 Discharge gas thermistor fault, circuit B As above Circuit B shuts down As above
16 15017 Discharge gas thermistor fault, circuit C As above Circuit C shuts down As above
17 15036 Dry Cooler Leaving thermistor failure As above None As above
18 15018 Condenser subcooling liquid thermistor fault, circuit A As above Unit returns to the air-cooled mode As above
19 15019 Condenser subcooling liquid thermistor fault, circuit B As above As above As above
20 15021 Space temperature thermistor fault As above None
As above
21 15023 Evaporator heater feedback thermistor fault As above None As above
22 15024 Economizer gas thermistor fault, circuit A As above Economizer function disabled As above
23 15025 Economizer gas thermistor fault, circuit B As above As above As above
24 15026 Economizer gas thermistor fault, circuit C As above As above As above
25 15030 Free cooling liquid thermistor fault, circuit A As above Free cooling disabled As above
26 15031 Free cooling liquid thermistor fault, circuit B As above As above As above
TRANSDUCER FAILURE
27 12001 Discharge transducer fault, circuit A Automatic, if sensor
voltage reading
returns to normal
Circuit A shuts down Defective transducer
or installation fault
28 12002 Discharge transducer fault, circuit B As above Circuit B shuts down As above
29 12003 Discharge transducer fault, circuit C As above Circuit C shuts down As above
30 12004 Suction transducer fault, circuit A As above Circuit A shuts down As above
31 12005 Suction transducer fault, circuit B As above Circuit B shuts down As above
32 12006 Suction transducer fault, circuit C As above Circuit C shuts down As above
33 12007 Heat reclaim pump-down pressure transducer fault,
circuit A
As above Reclaim session stopped and the
unit returns to the air-cooled
mode
As above
34 12008 Heat reclaim pump-down pressure transducer fault, circuit B As above As above As above
35 12010 Oil pressure transducer fault, circuit A As above Circuit A shuts down As above
36 12011 Oil pressure transducer fault, circuit B As above Circuit B shuts down As above
37 12012 Oil pressure transducer fault, circuit C As above Circuit C shuts down As above
38 12013 Economizer pressure transducer fault, circuit A As above Circuit A shuts down As above
39 12014 Economizer pressure transducer fault, circuit B As above Circuit B shuts down As above
40 12015 Economizer pressure transducer fault, circuit C As above Circuit C shuts down As above
41 12016 Free cooling pump inlet pressure transducer fault,
circuit A
As above Free cooling stopped and the unit
returns to mechanical cooling
As above
42 12017 Free cooling pump outlet pressure transducer fault, circuit A As above As above As above
43 12018 Free cooling pump inlet pressure transducer fault, circuit B As above As above As above
44 12019 Free cooling pump outlet pressure transducer fault, circuit B As above As above As above
47 12024 Water pressure 1 transducer failure (before the evaporator) As above Alert - the values read by the
hydronic kit function are not
reliable
As above
48 12025 Water pressure 2 transducer failure (after the evaporator) As above As above As above
49 12026
Water pressure 3 transducer failure (before the lter) As above As above As above
50 12027 Water pressure 4 transducer failure (after the lter) As above As above As above
52 12029 Low water pressure As above Alert – the unit continues to
operate
Water loop pressure
too low, risk of pump
cavitation