7.3 Warning and Alarm Code List
An (X) marked in Table 7.1 indicates that the warning or alarm has occurred. A warning precedes an alarm.
Numb
er
Description Warning Alarm Trip lock Cause
2 Live zero error X X –
Signal on terminal 53 or 54 is less than 50% of value set
in parameter 6-10 Terminal 53 Low Voltage,
parameter 6-12 Terminal 53 Low Current,
parameter 6-20 Terminal 54 Low Voltage, and
parameter 6-22 Terminal 54 Low Current.
3 No motor X – –
No motor has been connected to the output of the
frequency converter, or 1 motor phase is missing.
4
Mains phase loss
1)
X X X
Missing phase on supply side, or the voltage imbalance is
too high. Check the supply voltage.
7
DC overvoltage
1)
X X – Intermediate circuit voltage exceeds limit.
8
DC undervoltage
1)
X X –
Intermediate circuit voltage drops below the voltage
warning low limit.
9 Inverter overloaded X X – More than 100% load for too long.
10 Motor ETR overtemperature X X –
Motor is too hot due to more than 100% load for too
long.
11
Motor thermistor overtem-
perature
X X – Thermistor or thermistor connection is disconnected.
12 Torque limit X X –
Torque exceeds value set in either parameter 4-16 Torque
Limit Motor Mode or parameter 4-17 Torque Limit Generator
Mode.
13 Overcurrent X X X
Inverter peak current limit is exceeded. For J1–J6 units, if
this alarm occurs on power-up, check whether power
cables are mistakenly connected to the motor terminals.
14 Earth fault – X X Discharge from output phases to ground.
16 Short circuit – X X
Short circuit in motor or on motor terminals. For J7 units,
if this alarm occurs on power-up, check whether power
cables are mistakenly connected to the motor terminals.
17 Control word timeout X X – No communication to frequency converter.
18 Start failed – X – –
25 Brake resistor short-circuited – X X
Brake resistor is short-circuited, thus the brake function is
disconnected.
26 Brake overload X X –
The power transmitted to the brake resistor over the last
120 s exceeds the limit. Possible corrections: Decrease
brake energy via lower speed or longer ramp time.
27
Brake IGBT/Brake chopper short-
circuited
– X X
Brake transistor is short-circuited, thus brake function is
disconnected.
28 Brake check – X – Brake resistor is not connected/working.
30 U phase loss – X X Motor phase U is missing. Check the phase.
31 V phase loss – X X Motor phase V is missing. Check the phase.
32 W phase loss – X X Motor phase W is missing. Check the phase.
34 Fieldbus fault X X – PROFIBUS communication issues have occurred.
35 Option fault – X – Fieldbus or option B detects internal faults.
36 Mains failure X X –
This warning/alarm is only active if the supply voltage to
the frequency converter is lost and parameter 14-10 Mains
Failure is NOT set to [0] No Function.
38 Internal fault – X X Contact the local Danfoss supplier.
40 Overload T27 X – –
Check the load connected to terminal 27 or remove
short-circuit connection.
Diagnostics and Troubleshoo... Quick Guide
MG06A702 Danfoss A/S © 03/2017 All rights reserved. 47
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