33
Alarm codes (cont.)
Code Description
Possible cause
Action taken
Reset type
10008 Circuit A High Suction Superheat Pressure transducer
defective, temp. sensor
defective, EXV blocked
or lack of refrigerant
Circuit A shuts down
Manual
10009 Circuit B High Suction Superheat As above
Circuit B shuts down
Manual
10011 Circuit A Low Suction Superheat As above
Circuit A shuts down
Manual
10012 Circuit B Low Suction Superheat As above
Circuit B shuts down
Manual
10015 Condenser Flow Switch Failure
Abnormal conditions
on condenser side
Unit shuts down
Automatic (7 alarms within 24
hours); otherwise, Manual
10016 Compressor A1 Not Started or Pressure Increase
not Established
Compressor breaker or
fuse fault, compressor
switch open
Compressor A1 shuts down Manual
10017 Compressor A2 Not Started or Pressure Increase
not Established
As above
Compressor A2 shuts down Manual
10018 Compressor A3 Not Started or Pressure Increase
not Established
As above
Compressor A3 shuts down Manual
10020 Compressor B1 Not Started or Pressure Increase
not Established
As above
Compressor B1 shuts down Manual
10021 Compressor B2 Not Started or Pressure Increase
not Established
As above
Compressor B2 shuts down Manual
10028 Customer Interlock Failure
Customer interlock
input set on
Unit shuts down
Automatic (if the unit was
stopped); otherwise, Manual
10029 Loss of communication with System Manager Communication error
Unit returns to the
standalone mode
Automatic, if communication
with System Manager is
restored
10030 Master/Slave communication Failure Bus installation fault
Master/Slave control is
stopped / Unit returns to
the stand-alone mode
Automatic, if communication is
restored
10031 Unit is in CCN emergency stop
Network emergency
stop command
Unit shuts down
Automatic, if emergency stop
is deactivated
10032 Cooler pump 1 default
Flow switch or water
pump fault
Unit is restarted with
another pump running; If
no pump is available, the
unit shuts down
Manual
10033 Cooler pump 2 default
Flow switch or water
pump fault
As above
Manual
10037 Circuit A Repeated High Discharge Gas Overrides Repetitive capacity
decreases
None OR circuit A shuts
down
Automatic (no discharge gas
overrides within 30 min) or
Manual
10038 Circuit B Repeated High Discharge Gas Overrides As above
None OR circuit B shuts
down
As above
10040 Circuit A Repeated low suction temperature
overrides
As above
Circuit A shuts down
Manual
10041 Circuit B Repeated low suction temperature
overrides
As above
Circuit B shuts down
Manual
10043 Low entering water temperature in heating
Low entering fluid temp.
in Heating mode
None
Automatic, if water temperature
returns to normal or heating
mode is stopped
10051
Cooler flow switch failure
Flow switch fault
Unit shuts down
Manual
10063 Circuit A High pressure switch Failure High pressure switch is
open, compressor fault
Circuit A shuts down
Manual
10064 Circuit B High pressure switch Failure As above
Circuit B shuts down
Manual
10073 Condenser pump 1 default
Water pump fault
Unit is restarted with
another pump running; If
no pump is available, the
unit shuts down
Manual
10074 Condenser pump 2 default
As above
Unit is restarted with
another pump running; If
no pump is available, the
unit shuts down
Manual
10097 Cooler Water Exchanger Temperature Sensors
Swapped
Inlet and outlet temp.
reversed
Unit shuts down
Manual
10098 Condenser Water Exchanger Temperature Sensors
Swapped
As above
Unit shuts down
Manual
