Danfoss VLT HVAC Drive FC 131 - Warnings and Alarms; List of Warnings and Alarms

5 Warnings and Alarms
5.1 List of Warnings and Alarms
Table 14: Warnings and Alarms
Fault
num-
ber
Alarm/
warning
bit num-
ber
Fault text
Warn-
ing
Alarm
Trip
locked
Cause of problem
2
16
Live zero error
X
X
–
Signal on terminal 53 or 54 is less than 50% of the value
set in parameter 6-10 Terminal 53 Low Voltage, parameter
6-12 Terminal 53 Low Current, parameter 6-20 Terminal 54
Low Voltage, or parameter 6-22 Terminal 54 Low Current.
See also parameter group 6-0* Analog I/O Mode.
3
–
No motor
X
–
–
No motor is connected to the output of the drive.
4
14
Mains ph. loss
X
X
X
Missing phase on the supply side or too high voltage im-
balance. Check the supply voltage. See parameter 14-12
Function at Mains Imbalance.
7
11
DC over volt
X
X
–
DC-link voltage exceeds the limit.
8
10
DC under volt
X
X
–
DC-link voltage drops below voltage warning low-limit.
9
9
Inverter over-
load
X
X
–
More than 100% load for a long time.
10
8
Motor ETR
over
X
X
–
Motor is too hot due to more than 100% load for a long
time. See parameter 1-90 Motor Thermal Protection.
11
7
Motor th over
X
X
–
Thermistor or thermistor connection is disconnected. See
parameter 1-90 Motor Thermal Protection.
13
5
Over current
X
X
X
Inverter peak current limit is exceeded.
14
2
Earth fault
–
X
X
Discharge from output phases to ground.
16
12
Short circuit
–
X
X
Short circuit in motor or on motor terminals.
17
4
Ctrl. word TO
X
X
–
No communication to drive. See parameter group 8-0*
General Settings.
24
50
Fan fault
X
X
–
The heat sink cooling fan is not working (only on 400 V,
30–90 kW (40–125 hp) units).
30
19
U phase loss
–
X
X
Motor phase U is missing. Check the phase. See parameter
4-58 Missing Motor Phase Function.
31
20
V phase loss
–
X
X
Motor phase V is missing. Check the phase. See parameter
4-58 Missing Motor Phase Function.
32
21
W phase loss
–
X
X
Motor phase W is missing. Check the phase. See parame-
ter 4-58 Missing Motor Phase Function.
38
17
Internal fault
–
X
X
Contact the local Danfoss supplier.
44
28
Earth fault
–
X
X
Discharge from output phases to ground, using the value
of parameter 15-31 Alarm Log Value if possible.
46
33
Control volt-
age fault
–
X
X
Control voltage is low. Contact the local Danfoss supplier.
AQ367426199594en-000101 / 130R0988 | 41Danfoss A/S © 2021.06
Warnings and Alarms
VLT® HVAC Drive FC 131
Operating Guide