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37
Code
Alarm /Alert
Description
Action to be taken
Variator alarms (-nnn)
2
Alarm
Live zero fault
Contact Carrier Service
4
Alarm
Mains phase loss
Check the VFD supply voltage and the phase balance (±3%)
7
Alarm
Overvoltage
Contact Carrier Service
8
Alarm
Undervoltage
Contact Carrier Service
9
Alarm
Inverter overloaded
Check the VFD output current
10
Alarm
Motor overtemperature
Check the motor temperature
11
Alarm
Motor thermistor
Contact Carrier Service
12
Alarm
Torque limit exceeded
Check the VFD output current
13
Alarm
Overcurrent
Check the VFD output current
14
Alarm
Earth fault
Check if an earth fault exists
16
Alarm
Motor short-circuit
Check if there is a short-circuit at the VFD terminals
17
Alarm
Serial communication timeout
Check the connections and the shielding of the serial communication cable
23*
Alarm
Internal fan fault
Check the internal fan rotation
25
Alarm
Brake resistor short-circuited
Contact Carrier Service
26
Alarm
Brake resistor power limit
Contact Carrier Service
28
Alarm
Brake verification
Contact Carrier Service
29
Alarm
VFD temperature too high
Space temperature too high or VFD ventilation obstructed or damaged
30
Alarm
Motor phase U missing
Check wiring of phase U
31
Alarm
Motor phase V missing
Check wiring of phase V
32
Alarm
Motor phase W missing
Check wiring of phase W
33
Alarm
Inrush fault
Current demand too high: Let the VFD cool down for 20 minutes before starting it again
34
Alarm
Fieldbus communication fault
Check the connections and the shielding of the serial communication cable
36
Alarm
Mains failure
Check the VFD supply voltage and the phase balance (±3%)
38
Alarm
Internal fault
Contact Carrier Service
47
Alarm
24 V supply low
Contact Carrier Service
48
Alarm
1.8 V supply low
Contact Carrier Service
57**
Alarm
AMA timeout
Contact Carrier Service
65
Alarm
Control board overtemperature
Check the space temperature and the VFD fan
67
Alarm
Option configuration has changed
Contact Carrier Service
68
Alarm
Emergency stop
Contact Carrier Service
71
Alarm
PTC 1 emergency stop
Contact Carrier Service
72
Alarm
Emergency stop
Contact Carrier Service
80
Alarm
Drive initialized to default value
Contact Carrier Service
94
Alarm
End of curve
Contact Carrier Service
95
Alarm
Torque loss
Contact Carrier Service
243
Alarm
IGBT defective
Contact Carrier Service
251***
Alarm
New parts detached
Contact Carrier Service
Code
Alarm /Alert
Description
Action to be taken
Variator alerts (-nnn)
1
Alert
10 V low
Contact Carrier Service
2
Alert
Live zero error
Contact Carrier Service
3
Alert
No motor
Check the motor connections
4
Alert
Mains phase loss
Check the VFD supply voltage and the phase balance (±3%)
5
Alert
DC link voltage high
Check the VFD supply voltage and the phase balance (±3%)
6
Alert
DC link voltage low
Check the VFD supply voltage and the phase balance (±3%)
Alarm No. Alarm code Alarm description
Reset type
Action taken
Possible cause
157
39-nnn
Variable speed controller A2 alert (option 17) Automatic
None
As above
158
40-nnn
Variable speed controller A3 alert (option 17) Automatic
None
As above
159
41-nnn
Variable speed controller B1 alert (option 17) Automatic
None
As above
160
42-nnn
Variable speed controller B2 alert (option 17) Automatic
None
As above
161
43-nnn
Variable speed controller B3 alert (option 17) Automatic
None
As above
COMPRESSOR FAILURE
174-192
11nn
Compressor A fault
Manual
Unit shuts down
See section 8.6.3
193-211
21nn
Compressor B fault
Manual
Unit shuts down
As above
212-230
31nn
Compressor C fault
Manual
Unit shuts down
As above
SOFTWARE FAILURE
165
55001
Database module fault
Automatic
Unit shuts down
Software problem. Contact
Carrier Service
166
56001
Lenscan module fault
Automatic
Unit shuts down
Software problem. Contact
Carrier Service
8.6.2 - Drive alarms
The tables below present the most common alarms associated
with the variator malfunction. Please refer to the applicable
Danfoss documentation for more information on other alarms.