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48
8 - DIAGNOSTICS
Jbus
code Code Alarm description
Possible cause
Action taken
Reset type
90
10091
Cooler Flow Switch Failure
Cooler flow switch is open
Compressors and the
evaporator pump are
stopped
Automatic (the first alarm
within the last 24 hours);
otherwise Manual
91
10100
Electrical Box Fan Failure
Electrical box fan
malfunction or fan current
probe malfunction
Unit shuts down
Manual
92
10097 Water Exchanger Temperature Sensors Swapped
Leaving water temperature
is higher than entering
water temperature
Unit shuts down
Manual
Maintenance alarms
93
13001 Service Maintenance Alert
Preventive maintenance
date has passed;
servicing action required;
please contact your local
service representative
None (alert)
Manual
94
13005
Fgas check needed, call your maintenance
company
As above
None (alert)
Manual
Software failure
95
55001
Database Module Failure
Software problem, Please
contact your local service
representative
Unit shuts down
Manual
96
56001
Lenscan Module Failure
As above
Unit shuts down
Manual
Device failure
97
57020
Main EXV stepper motor Failure – cir A
EXV motor fault
Circuit A shuts down
Manual
98
57021
Main EXV stepper motor Failure – cir B
EXV motor fault
Circuit B shuts down
Manual
100
57023
EXV eco stepper motor Failure – cir A
Eco EXV motor fault
Circuit A shuts down
Manual
101
57024
EXV eco stepper motor Failure – cir B
Eco EXV motor fault
Circuit B shuts down
Manual
103
10050 Refrigerant Leakage Detection
Refrigerant leak or leak
detector defective
None (alert)
Automatic
Replacement mode: Software activation key(s) missing
104
10122 Replacement Mode: please contact Service
Representative to activate options
Replacement Mode:
Please contact your local
service representative to
obtain activation key(s) to
retrieve (or activate)
software options
Replacement Mode:
Please contact your
local service
representative to obtain
activation key(s) to
retrieve (or activate)
software options
Automatic, if Software
Activation Key is installed
Automatic, if Software
Activation Key is not
provided within 7 days
since the first compressor
start (the alarm will be reset
and software-protected
options will be blocked)
Compressor failure
106
– 124
11nn
Compressor A fault
Unit shuts down
Manual
125
– 143
21nn
Compressor B fault
Unit shuts down
Manual