Carrier SmartVu - Alarms Description

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8 - DIAGNOSTICS
8.6 - Alarms description
8.6.1 - Alarms list
No. Code Description Possible cause Action taken Reset
Thermistor failure
1 15001
Water Exchanger Entering Fluid Thermistor
Failure
Defective thermistor Unit shuts down
Automatic, if thermistor
reading returns to normal
2 15002
Water Exchanger Leaving Fluid Thermistor
Failure
As above As above As above
3 15003 Circuit A Defrost Thermistor Failure As above As above As above
4 15004 2d Coil Defrost Thermistor Failure As above As above As above
5 15010 OAT Thermistor Failure As above As above As above
6 15011
MASTER/Slave Common Fluid Thermistor
Failure
As above
Master/Slave assembly is
disabled
As above
7 15012 Circuit A Suction Gas Thermistor Failure As above Unit shuts down As above
8 15024 Circuit A Economizer Gas Thermistor Failure As above As above As above
9 15025 Domestic Hot Water Tank Thermistor Failure As above DHW mode is disabled As above
Transducer failure
10 12001
Circuit A Discharge Pressure Transducer
Failure
Defective transducer Unit shuts down
Automatic, if sensor
voltage reading returns to
normal
11 12004 Circuit A Suction Pressure Transducer Failure As above As above
Automatic, if sensor voltage
reading returns to normal
(up to 3 alarms within 24
hours); otherwise, Manual
12 12013 Circuit A Economizer Pressure Transducer As above As above
Automatic, if sensor
voltage reading returns to
normal
13 12024
Water Exchanger Entering Fluid Transducer
Failure
As above As above As above
Drive failure
14 19001 Variable Speed Water Pump Failure
Speed controller fault,
see section 8.6.2
Unit shuts down
Automatic, if operating
conditions return to normal
Communication failure
15 4901
Loss of communication with SIOB Board
Number A
Bus installation fault,
communication error
Unit shuts down
Automatic, if communication
is re-established
16 4601 Loss of communication with AUX1 Board As above Unit shuts down As above
Compressor failure
17 1101
Comp. A1 failed: Motor protection Kriwan
Safety Opened
Compressor
overheating
Unit shuts down Manual
18 1201
Comp. A2 failed: Motor protection Kriwan
Safety Opened
As above Unit shuts down Manual
Process failure and others
19 10001 Water Exchanger Freeze Protection
No water ow,
defective thermistor
Unit shuts down but the
pump continues to run
Automatic (the rst alarm
within 24 hours); otherwise,
Manual
20 10005 Circuit A Low Saturated Suction Temperature
Pressure transducer
defective, EXV blocked
or lack of refrigerant
Unit shuts down As above
21 10008 Circuit A High Superheat
Pressure transducer
defective, temperature
sensor defective,
EXV blocked or lack
of refrigerant
Unit shuts down Manual
22 10011 Circuit A Low Superheat As above Unit shuts down
Automatic (up to 3 alarms
within 24 hours); otherwise,
Manual