Alarms Description - Carrier 30WG Operation Instructions Manual

9.5 - Alarms description

This section includes all alarms/alerts associated with the
operation of the unit as well as optional drives used to provide
variable speed fans and variable speed pumps functionalities.
General alarm codes
The following table includes a list of alarms that might appear
on the unit. Please note that the alarm number given in the
first column can be useful when retrieving information
regarding the existing alarms.
Code Description
Thermistor failure
15001 Water Exchanger Entering Fluid Thermistor Failure
15002 Water Exchanger Leaving Fluid Thermistor Failure
15006 Condenser Entering Fluid Thermistor Failure
15007 Condenser Leaving Fluid Thermistor Failure
15010 OAT Thermistor Failure
15011 Master/Slave Common Fluid Thermistor Failure
15012 Circuit A Suction Gas Thermistor Failure
15013 Circuit B Suction Gas Thermistor Failure
15032 Master/Slave Common Heating Fluid Thermistor
Failure
15036 Dry Cooler LWT Thermistor Failure
15044 Circuit A Discharge Gas Thermistor Failure
15045 Circuit B Discharge Gas Thermistor Failure
Transducer failure
12001 Circuit A Discharge Pressure Transducer Failure
12002 Circuit B Discharge Pressure Transducer Failure
12004 Circuit A Suction Pressure Transducer Failure
12005 Circuit B Suction Pressure Transducer Failure
12024 Water Exchanger Entering Fluid Transducer Failure
12025 Water Exchanger Leaving Fluid Transducer Failure
12026 Water Condenser Entering Fluid Transducer Failure
12027 Water Condenser Leaving Fluid Transducer Failure
Communication failure
4901 Loss of communication with SIOB Board Number 1
4902 Loss of communication with SIOB Board Number 2
4601 Loss of communication with AUX1 Heating Device
Control board
4602 Loss of communication with AUX1 Condenser
board
4604 Loss of communication with AUX1 Options board
4605 Loss of communication with Free Cooling Board 1
(free cooling dry cooler)
Process failure
10001 Cooler Water Exchanger Freeze Protection
10005 Circuit A Low Saturated Suction Temperature
10006 Circuit B Low Saturated Suction Temperature
32
Possible cause Action taken
Defective thermistor Unit shuts down
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 Circuit A shuts down
As above Circuit B shuts down
As above Circuit A shuts down
As above Circuit B shuts down
As above Unit shuts down
As above As above
As above As above
As above As above
Bus installation fault, Unit shuts down
communication error
As above As above
As above As above
As above As above
As above Depends on the option
(Master-Slave disabled /
desuperheater disabled /
unit shuts down)
As above Unit returns to mechanical
cooling
No water flow, defective Unit shuts down but the
thermistor pump continues to run
Pressure transducer Circuit A shuts down
defective, EXV blocked
or lack of refrigerant
As above Circuit B shuts down
Reset type
Automatic, if thermistor
reading returns to normal
As above
As above
As above
As above
As above
As above
As above
As above
As above
As above
As above
Automatic, if sensor voltage
reading returns to normal
As above
Automatic (up to 3 alarms
within 24h); otherwise, Manual
As above
Automatic, if sensor voltage
reading returns to normal
As above
As above
As above
Automatic, if communication is
re-established
As above
As above
As above
As above
As above
Automatic (the first alarm in the
last 24h); otherwise, Manual
As above
As above