Danfoss VLT Refrigeration Drive FC 103 Programming Manual page 228

Troubleshooting
WARNING/ALARM 13, Over Current
The inverter peak current limit (approximately 200% of the
rated current) is exceeded. The warning lasts approximately
8–12 s, then the frequency converter trips and issues an
alarm. Turn off the frequency converter and check if the
motor shaft can be turned and if the motor size matches
the frequency converter.
ALARM 14, Earth fault
There is a discharge from the output phases to ground,
either in the cable between the frequency converter and
the motor or in the motor itself.
5 5
Troubleshooting:
•
Turn off the frequency converter and remove the
ground fault.
ALARM 15, Incomplete hardware
A fitted option is not handled by the present control board
(hardware or software).
ALARM 16, Short-circuit
There is short-circuiting in the motor or on the motor
terminals.
Troubleshooting:
•
Turn off the frequency converter and remove the
short-circuit.
WARNING/ALARM 17, Control word timeout
There is no communication to the frequency converter.
The warning is only active when parameter 8-04 Control
Timeout Function is NOT set to [0] Off.
If parameter 8-04 Control Timeout Function is set to [5] Stop
and Trip, a warning appears and the frequency converter
ramps down to zero speed, while giving an alarm.
Parameter 8-03 Control Timeout Time could possibly be
increased.
ALARM 18, Start Failed
The speed has not been able to exceed
parameter 1-77 Compressor Start Max Speed [RPM] during
the start within the allowed time
parameter 1-79 Compressor Start Max Time to Trip. This may
be caused by a blocked rotor.
WARNING 19, Discharge Temperature High
The discharge temperature exceeds the level programmed
in parameter 28-24 Warning Level. If so programmed in
parameter 28-25 Warning Action, the frequency converter
lowers the speed of the compressor in an attempt to lower
the discharge temperature.
ALARM 19, Discharge Temperature High
The discharge temperature exceeds the level programmed
in parameter 28-26 Emergency Level.
WARNING 23, Internal fans
External fans have failed due to defect hardware or fans
not mounted.
226
®
VLT Refrigeration Drive FC 103
WARNING 24, External fan fault
The fan warning function is an extra protection function
that checks if the fan is running/mounted. The fan warning
can be disabled in parameter 14-53 Fan Monitor, [0]
Disabled.
WARNING/ALARM 29, Drive over temperature
If the enclosure protection rating is IP00, IP20/Nema 1, or
IP21/TYPE 1, the cutout temperature of the heat sink is
95 °C +5 °C (203 °F + 41 °F). The temperature fault cannot
be reset, until the temperature of the heat sink is below
70 °C (158 °F).
The fault could be:
•
•
ALARM 30, Motor phase U missing
Motor phase U between the frequency converter and the
motor is missing.
Troubleshooting:
•
ALARM 31, Motor phase V missing
Motor phase V between the frequency converter and the
motor is missing.
Troubleshooting:
•
ALARM 32, Motor phase W missing
Motor phase W between the frequency converter and the
motor is missing.
Troubleshooting:
•
ALARM 33, Inrush fault
Too many power-ups have occured within a short time
period. See General Specifications in the VLT
Drive FC 103 Design Guide for the allowed number of
power-ups within 1 minute.
WARNING/ALARM 34, Fieldbus communication fault
The fieldbus 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 frequency converter is lost and parameter 14-10 Mains
Failure is NOT set to [0] No function.
Troubleshooting:
•
ALARM 38, Internal fault
Contact the local Danfoss supplier.
Danfoss A/S © 05/2016 All rights reserved.
Ambient temperature too high.
Too long motor cable.
Turn off the frequency converter and check motor
phase U.
Turn off the frequency converter and check motor
phase V.
Turn off the frequency converter and check motor
phase W.
Check the fuses to the frequency converter.
®
Refrigeration
MG16H202