Troubleshooting
Check for the following conditions.
•
Ambient temperature too high.
•
Motor cable too long.
•
Incorrect airflow clearance above and below the
adjustable frequency drive.
•
Blocked airflow around the adjustable frequency
drive.
•
Damaged heatsink fan.
•
Dirty heatsink.
ALARM 30, Motor phase U missing
Motor phase U between the adjustable frequency drive
and the motor is missing.
Remove power from the adjustable frequency drive and
check motor phase U.
ALARM 31, Motor phase V missing
Motor phase V between the adjustable frequency drive
and the motor is missing.
Remove power from the adjustable frequency drive and
check motor phase V.
ALARM 32, Motor phase W missing
Motor phase W between the adjustable frequency drive
and the motor is missing.
Remove power from the adjustable frequency drive and
check motor phase W.
ALARM 33, Inrush fault
Too many power-ups have occurred within a short time
period. Let the unit cool to operating temperature.
WARNING/ALARM 34, Fieldbus communication fault
The serial communication bus on the communication
option card is not working.
WARNING/ALARM 36, Mains failure
This warning/alarm is only active if the supply voltage to
the adjustable frequency drive is lost and 14-10 Mains
Failure is not set to [0] No Function. Check the fuses to the
adjustable frequency drive and line power supply to the
unit.
ALARM 38, Internal fault
When an internal fault occurs, a code number defined in
Table 7.4 is displayed.
Troubleshooting
•
Cycle power
•
Check that the option is properly installed
•
Check for loose or missing wiring
It may be necessary to contact your Danfoss supplier or
service department. Note the code number for further
troubleshooting directions.
No. Text
0 Serial port cannot be initialized. Contact your
Danfoss supplier or Danfoss Service Department.
256-258 Power EEPROM data is defective or too old.
Replace power card.
512-519 Internal fault. Contact your Danfoss supplier or
Danfoss Service Department.
783 Parameter value outside of min/max limits
1024-1284 Internal fault. Contact your Danfoss supplier or the
Danfoss Service Department.
1299 Option SW in slot A is too old.
1300 Option SW in slot B is too old.
1315 Option SW in slot A is not supported (not
allowed).
1316 Option SW in slot B is not supported (not
allowed).
1379-2819 Internal fault. Contact your Danfoss supplier or
Danfoss Service Department.
1792 HW reset of DSP.
1793 Motor-derived parameters not transferred correctly
to DSP.
1794 Power data not transferred correctly at power-up
to DSP.
1795 The DSP has received too many unknown SPI
messages.
1796 RAM copy error.
2561 Replace control card.
2820 LCP stack overflow.
2821 Serial port overflow.
2822 USB port overflow.
3072-5122 Parameter value is outside its limits.
5123 Option in slot A: Hardware incompatible with
control board hardware.
5124 Option in slot B: Hardware incompatible with
control board hardware.
5376-6231 Internal fault. Contact your Danfoss supplier or
Danfoss Service Department.
Table 7.4 Internal Fault Codes
ALARM 39, Heatsink sensor
No feedback from the heatsink temperature sensor.
The signal from the IGBT thermal sensor is not available on
the power card. The problem could be on the power card,
on the gate drive card, or the ribbon cable between the
power card and gate drive card.
WARNING 40, Overload of digital output terminal 27
Check the load connected to terminal 27 or remove short-
circuit connection. Check 5-00 Digital I/O Mode and 5-01
Terminal 27 Mode.
Maintenance, Diagnostics an...
Instruction Manual
42 Danfoss A/S © Rev. 2014-04-10 All rights reserved. MG16E322
77
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