36
Alarm No. Alarm code Alarm description
Reset type
Action taken
Possible cause
122
10043
Low entering water temperature in heating
Automatic, if EWT returns to
normal or Heating mode is
disabled
None
Entering water temperature
is below 3.3°C
95
10067
Low oil pressure, circuit A
Manual
Circuit A shuts down
Pressure sensor fault,
defective wiring or oil filter
installation fault
96
10068
Low oil pressure, circuit B
Manual
Circuit B shuts down
As above
97
10069
Low oil pressure, circuit C
Manual
Circuit C shuts down
As above
98
10070
Maximum oil filter differential pressure,
circuit A
Manual
The affected compressor is stopped,
other compressors continue to run
As above
99
10071
Maximum oil filter differential pressure,
circuit B
Manual
As above
As above
100
10072
Maximum oil filter differential pressure,
circuit C
Manual
As above
As above
123
10073
Condenser pump 1 fault
Manual
Unit is restarted with another pump
running. If no pumps are available,
the unit shuts down
Pump overheats or poor
pump connection
124
10074
Condenser pump 2 fault (not available!)
Manual
As above
As above
104
10075
Low oil level, circuit A
Automatic (three alarms in
the last 24 hours) or Manual
Circuit A shuts down
Oil level too low or oil level
detector defective
105
10076
Low oil level, circuit B
As above
Circuit B shuts down
As above
106
10077
Low oil level, circuit C
As above
Circuit C shuts down
As above
125
10078
High discharge gas temperature, circuit A
Manual
Circuit A shuts down
Defective transducer, max.
condensing temperature
setpoint too low or
refrigerant charge too high
126
10079
High discharge gas temperature, circuit B
Manual
Circuit B shuts down
As above
127
10080
High discharge gas temperature, circuit C
Manual
Circuit C shuts down
As above
128
10081
Suction valve closed, circuit A
Manual
Circuit A shuts down
Economizer pressure
transducer defective,
suction valve fault
129
10082
Suction valve closed, circuit B
Manual
Circuit B shuts down
As above
130
10083
Suction valve closed, circuit C
Manual
Circuit C shuts down
As above
101
10084
High oil filter drop pressure, circuit A
Manual
None
Pressure sensor fault, wiring
defective, oil filter installation
fault
102
10085
High oil filter drop pressure, circuit B
Manual
None
As above
103
10086
High oil filter drop pressure, circuit C
Manual
None
As above
131
10087
Slide valve control unverifiable, circuit A
Manual
None
Defective or incorrectly
wired solenoid valves,
defective current
transformer
132
10088
Slide valve control unverifiable, circuit B
Manual
None
As above
133
10089
Slide valve control unverifiable, circuit C
Manual
None
As above
134
10090
Flow controller configuration fault
Manual
Unit is not allowed to restart
Defective flow controller or
wiring error
135
10091
Flow controller fault – evaporator flow switch
failure
Automatic (the first
alarm in the last 24
hours) or Manual
Compressors and the evaporator
pump are stopped
As above
137
10094
Free cooling operation failure, circuit A
Automatic (three alarms in
the last 24 hours) or Manual
Circuit A shuts down, Free cooling
can be started 30 minutes later
Refrigerant pump fault
138
10095
Free cooling operation failure, circuit B
As above
Circuit B shuts down, Free cooling
can be started 30 minutes later
As above
139
10097
Water exchanger temperature sensors
swapped
Manual
Unit shuts down
Leaving water temperature
is higher than entering water
temperature
136
10100
Electrical box fan failure
(units with HFO only)
Manual
Unit shuts down
Electrical box fan
malfunction or fan current
probe malfunction
MAINTENANCE ALARMS
140
13-nnn
Service maintenance alert
Manual
None
Preventive maintenance
date has passed
VLT DRIVE FAILURE
141
20-nnn
Variable speed controller error, circuit A
(units w/o option 17)
Manual
Circuit A shuts down
Speed controller fault (see
section 8.6.2)
142
23-nnn
Variable speed controller error, circuit B
(units w/o option 17)
Manual
Circuit B shuts down
As above
143
26-nnn
Variable speed controller error, circuit C
(units w/o option 17)
Manual
Circuit C shuts down
As above
144
20-nnn
VLT Fan Drive A1 Failure (option 17)
Manual
Circuit A shuts down
As above
145
21-nnn
VLT Fan Drive A2 Failure (option 17)
Manual
Circuit A shuts down
As above
146
22-nnn
VLT Fan Drive A3 Failure (option 17)
Manual
Circuit A shuts down
As above
147
23-nnn
VLT Fan Drive B1 Failure (option 17)
Manual
Circuit B shuts down
As above
148
24-nnn
VLT Fan Drive B2 Failure (option 17)
Manual
Circuit B shuts down
As above
149
25-nnn
VLT Fan Drive B3 Failure (option 17)
Manual
Circuit B shuts down
As above
153
34-nnn
Variable speed controller alert, circuit A
(units w/o option 17)
Manual
None
Speed controller alert
(see section 8.6.2)
154
35-nnn
Variable speed controller alert, circuit B
(units w/o option 17)
Manual
None
As above
155
36-nnn
Variable speed controller alert, circuit C
(units w/o option 17)
Manual
None
As above
156
38-nnn
Variable speed controller A1 alert (option 17) Automatic
None
As above
