Danfoss VLT HVAC Drive FC 100 Series Design Manual page 168

8. General Specifications and Troubleshooting
4. By resetting automatically using the [Auto Reset] function, which is a default setting for frequency converter. see par. 14-20 Reset
HVAC Drive Programming Guide, MG.11.Cx.yy
NB!
After a manual reset using the [RESET] button on the , the [AUTO ON] button must be pressed to restart the motor.
If an alarm cannot be reset, the reason may be that its cause has not been rectified, or the alarm is trip-locked (see also table on following page).
Alarms that are trip-locked offer additional protection, means that the mains supply must be switched off before the alarm can be reset. After being
switched back on, the frequency converter is no longer blocked and may be reset as described above once the cause has been rectified.
Alarms that are not trip-locked can also be reset using the automatic reset function in par. 14-20 Reset
If a warning and alarm is marked against a code in the table on the following page, this means that either a warning occurs before an alarm, or it can
be specified whether it is a warning or an alarm that is to be displayed for a given fault.
This is possible, for instance, in par. 1-90 Motor
flash on the frequency converter. Once the problem has been rectified, only the alarm continues flashing.
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Thermal Protection
. After an alarm or trip, the motor carries on coasting, and the alarm and warning
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VLT HVAC Drive Design Guide
Mode
Mode
(Warning: automatic wake-up is possible!)
VLT
in