Danfoss VLT FC 102 Programming Manual page 746

Programming Guide | VLT® HVAC Drive FC 102
Troubleshooting
Inspect that the motor operates properly.
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WARNING 220, Configuration File Version not Supported
Cause
The drive does not support the current configuration file version. Customization is aborted.
ALARM 243, Brake IGBT
Cause
This alarm is only for multi-drive systems. It is equivalent to alarm 27, Brake chopper fault. The report value in thie alarm log indicates
which drive module generated the alarm. This IGBT fault can be caused by any of the following:
The DC fuse is blown.
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The brake jumper is not in position.
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The Klixon switch opened due to an overtemperature condition in the brake resistor.
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Indication of the drive module generating the alarm:
1 = Left drive module.
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2 = Second drive module from left.
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3 = Third drive module from left (in 4-module systems).
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4 = Fourth drive module from left (in 4-module systems).
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ALARM 244, Heat Sink Temperature
Cause
The maximum temperature of the heat sink has been exceeded. The temperature fault cannot reset until the temperature drops below
the defined heat sink temperature. The trip and reset points are different, based on the power size. This alarm is equivalent to Alarm 29,
Power module temp.
Troubleshooting
Check for the following:
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a.
Ambient temperature too high.
b.
Motor cables too long.
c. Incorrect airflow clearance above or below the AC drive.
d. Blocked airflow around the unit.
e.
Damaged heat sink fan.
f.
Dirty heat sink.
ALARM 245, Heat Sink Sensor
Cause
There is no feedback from the heat sink temperature sensor. This signal form the IGBT thermal sensor is not available on the power card.
This alarm is equivalent to Alarm 39, Heat sink sensor.
The report value in the alarm log indicates which drive module generated the alarm:
1 = Left drive module.
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2 = Second drive module from the left.
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746 | © 2024.10
Troubleshooting
AU430028034214en-001901 / 130R0310