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9 - DIAGNOSTICS
Code
Description
Possible cause
Action taken on the unit
Reset type
10043
Low Entering Water Temperature in
Heating
Low entering fluid temperature in
Heating mode
None
Automatic, if water temperature
returns to normal or heating mode
is stopped
10051
Water Exchanger 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
High pressure switch is open,
compressor fault
Circuit B shuts down
Manual
10090
Water Exchanger Flow Switch: Setpoint
Configuration Failure
Setpoint configuration failure
Unit cannot be started
Manual
10097
Water Exchanger Temperature Sensors
Swapped
Input and output temperature
reversed
Unit shuts down
Manual
10099
Refrigerant Leakage Detection
Refrigerant leak or leak detector
defective
None
Automatic, if operating conditions
return to normal
10101
DC Free Cooling Process Failure
Dry cooler fault
None
Automatic, if operating conditions
return to normal
11202
Water Loop : Delta Pressure Error
Low water pressure offset
Pump is stopped and the unit
cannot be started
Automatic, if water pressure delta
returns to normal
11203
Water Loop : Pressure Too Low
Pump inlet pressure is below
60 kPa
Unit shuts down
Automatic (if water pressure
reading returns to normal and the
alarm occurred up to 6 times in the
last 24h); otherwise, Manual
11204
Water Loop : Pump Not Started
Too low or high water pressure
reading
Water pump is stopped
Automatic, if water pressure
reading returns to normal
11206
Water Loop : Pump Overload
Water loop pressure drop too low None
Automatic
11207
Water Loop : Flow Too Low
Water loop pressure drop too high Water pump is stopped
Automatic, if water flow reading
returns to normal
11208
Water Loop : Pressure Sensors
Crossed
Pressure sensors crossed
Unit shuts down
Automatic (if the alarm occurred up
to 6 occurrences in the last 24h);
otherwise, Manual
11209
Water Loop : Low Pressure Warning
Low water pressure reading
None
Automatic, if water pressure
reading returns to normal
10210
Low Delta Pressure Operation Failure -
cir A
Circuit running in part load with
all available compressors and low
delta pressure during operation.
Not enough capacity available /
compressor fault
Circuit A shuts down
Manual
10211
Low Delta Pressure Operation Failure -
cir B
Circuit running in part load with
all available compressors and low
delta pressure during operation.
Not enough capacity available /
compressor fault
Circuit B shuts down
Manual
SERVICE AND FACTORY
70nn
Illegal configuration
7001: Unit size is unknown
Incorrect unit configuration
Unit cannot be started
Automatic, if configuration is corrected
8000
No Factory Configuration
No factory configuration
Unit cannot be started
Automatic, if configuration is provided
8001
Illegal Brand Identifier
Incorrect unit configuration
Unit cannot be started
Automatic, if configuration is corrected
90nn
Master Chiller Configuration Error
Number #1 to nn
Configuration failure
Master/slave operation is disabled
and the unit returns to the stand-
alone mode
Automatic, if master/slave
configuration returns to normal or the
unit returns to the standalone mode
SERVICE MAINTENANCE WARNING
130nn Service Maintenance Alert Number # nn
004: Maintenance servicing required
Servicing action required. Contact
Manufacturer Service Agency.
Depending on the severity of the
alarm, the unit may continue to
operate or the unit shuts down
Manual
13005
Fgas check needed, call your
maintenance company
As above
As above
Manual
VFD DRIVE FAILURE
170nn Circuit A VFD Fan Drive Failure
Speed controller fault. See also
9.3.2 Drive alarms.
Circuit A shuts down
Automatic or Manual
(motor overload only)
180nn Circuit B VFD Fan Drive Failure
As above
Circuit B shuts down
Automatic or Manual
(motor overload only)
350nn Circuit A VFD Fan Drive Alert
As above
None
Automatic
360nn Circuit B VFD Fan Drive Alert
As above
None
Automatic
190nn VFD Pump 1 Drive Failure
As above
Unit is restarted with another
pump running. If no pumps are
available, the unit shuts down
Automatic or Manual
(motor overload only)
EN-51 AQUACIAT
POWER