39
9.6.4 - Compressor drive alarms/alerts
Compressor drive alarms or alerts are displayed based on
the following formula: 17+X-YYY for alarms and 35+X-YYY
for alerts (X stands for the number of the circuit and YYY
is the alarm/alert code).
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.
Code Description Action to be taken
Drive alarms
4 Mains phase loss Check the VFD supply voltage and the phase balance (±3%)
7 Over voltage Contact Carrier Service
8 Under voltage Contact Carrier Service
9 Inverter overloaded Check the VFD output current/compressor current
12 Torque limit exceeded Check the VFD output current/compressor current
13 Overcurrent Check the VFD output current/compressor current
14 Earth fault Check if an earth fault exists
16 Motor short-circuit Check if there is a short-circuit at the VFD terminals
23* Internal fan fault Check the internal fan rotation
29 VFD temperature too high Space temperature too high or VFD ventilation obstructed or damaged
30 Motor phase U missing Check wiring of phase U
31 Motor phase V missing Check wiring of phase V
32 Motor phase W missing Check wiring of phase W
33 Inrush fault Current demand too high: Let the VFD cool down for 20 minutes before starting it again
34 Fieldbus communication fault Check the connections and the shielding of the serial communication cable
36 Mains failure Check the VFD supply voltage and the phase balance (±3%)
38 Internal fault Contact Carrier Service
47 24 V supply low Contact Carrier Service
48 1.8 V supply low Contact Carrier Service
65 Control board over temperature Check the space temperature and the VFD fan
67 Option conguration has changed Contact Carrier Service
68 Emergency stop Contact Carrier Service
80 Drive initialized to default value Contact Carrier Service
95 Torque loss Contact Carrier Service
243 IGBT defective Contact Carrier Service
251** New parts detached Contact Carrier Service
Drive alerts
3 No motor Check the motor connections
4 Mains phase loss Check the VFD supply voltage and the phase balance (±3%)
5 DC link voltage high Check the VFD supply voltage and the phase balance (±3%)
6 DC link voltage low Check the VFD supply voltage and the phase balance (±3%)
7 DC over voltage Contact Carrier Service
8 DC under voltage Contact Carrier Service
9 Inverter overloaded Check the VFD output current/compressor current
12 Torque limit exceeded Check the VFD output current/compressor current
13 Overcurrent Check the VFD output current/compressor current
14 Earth fault Check if an earth fault exists
23* Internal fan fault:
Compressor drive: The drive will be stopped
immediately.
Fan drive: The drive continues to operate.
Check the internal fan rotation
34 Fieldbus communication fault Check the connections and the shielding of the serial communication cable
36 Mains failure Check the VFD supply voltage and the phase balance (±3%)
47 24 V supply low Contact Carrier Service
49 Motor speed limit exceeded Contact Carrier Service
59 Current limit exceeded Check the VFD output current/compressor current
62 Output frequency at maximum limit Check the VFD output current/compressor current
64 Voltage limit Supply voltage too low
65 Control board overtemperature Check the space temperature and the VFD fan
66 Heat sink temperature low Space temperature too low
90† Encoder loss Contact Carrier Service
95 Torque loss Contact Carrier Service
96 Start delayed Contact Carrier Service
97 Stop delayed Contact Carrier Service
98 Clock fault Contact Carrier Service
243 IGBT defective Contact Carrier Service
247 Capacity board temperature Contact Carrier Service
* Error 24 and 104 possible
** Error 70 or 250 possible
† Not applicable to variator size 102
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