1.7 Warnings and Alarms
Fault
number
Alarm/
Warning
Bit
Number Fault text
Warning Alarm
Trip
locked Cause of problem
2
16
Live zero error
X
X
Signal on terminal 53 or 54 is less than 50% of value set in
6-10 Terminal 53 Low Voltage
,
6-12 Terminal 53 Low Current
,
6-20 Terminal 54 Low Voltage
or
6-22 Terminal 54 Low Current
. See
also parameter group 6-0*
4
14
Mains ph. loss
X
X
X
Missing phase on supply side or too high voltage imbalance.
Check supply voltage. See
14-12 Function at Mains Imbalance
7
11
DC over volt
X
X
Internediate circuit voltage exceeds limit.
8
10
DC under volt
X
X
Intermediate circuit voltage drops below “voltage warning low”
limit.
9
9
Inverter
overload
X
X
More than 100% load for too long.
10
8
Motor ETR
over
X
X
Motor is too hot due to more than 100% load for too long. See
1-90 Motor Thermal Protection
11
7
Motor th over
X
X
Thermistor or thermistor connection is disconnected. See
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 frequency converter. See parameter group
8-0*
24
50
Fan Fault
X
X
The fan is not working (Only on 400 V 30-90 kW units).
30
19
U phase loss
X
X
Motor phase U is missing. Check the phase. See
4-58 Missing Motor
Phase Function
.
31
20
V phase loss
X
X
Motor phase V is missing. Check the phase. See
4-58 Missing Motor
Phase Function
.
32
21
W phase loss
X
X
Motor phase W is missing. Check the phase. See
4-58 Missing
Motor Phase Function
.
38
17
Internal fault
X
X
Contact your local Danfoss supplier.
40
10
Overload on
Terminal 27,
Digital Output
X
Overload on Terminal 27, Digital Output
41
11
Overload on
Terminal 29,
Digital Output
X
Overload on Terminal 29, Digital Output
44
28
Earth Fault
X
X
Discharge from output phases to ground.
47
23
Control
Voltage Fault
X
X
X
24 V DC may be overloaded.
48
25
VDD1 Supply
Low
X
X
Control voltage low. Please contact your local Danfoss supplier
50
AMA
Calibration
failed
X
Contact your local Danfoss supplier.
51
15
AMA
Unom,Inom
X
The setting of motor voltage, motor current and motor power is
presumably wrong. Check the settings.
52
AMA low Inom
X
The motor current is too low. Check the settings.
53
AMA big
motor
X
The motor is too big for the AMA to be carried out
54
AMA small
mot
X
The motor is too small for the AMA to be carried out
Quick Guide
VLT
®
HVAC Basic Drive Cascade Controller Quick Guide
28
MG18F202 - VLT
®
is a registered Danfoss trademark
1
1