Danfoss VLT FC 102 Operating Instructions Manual page 42

Diagnostics and Troubleshoo...
ALARM 93, Dry pump
A no-flow condition in the system with the frequency
converter operating at high speed may indicate a dry
pump. 22-26 Dry Pump Function is set for alarm.
Troubleshoot the system and reset the frequency converter
after the fault has been cleared.
ALARM 94, End of curve
Feedback is lower than the set point. This may indicate
leakage in the system. 22-50 End of Curve Function is set for
alarm. Troubleshoot the system and reset the frequency
converter after the fault has been cleared.
ALARM 95, Broken belt
Torque is below the torque level set for no load, indicating
a broken belt. 22-60 Broken Belt Function is set for alarm.
Troubleshoot the system and reset the frequency converter
after the fault has been cleared.
ALARM 96, Start delayed
7 7
Motor start has been delayed due to short-cycle
protection. 22-76 Interval between Starts is enabled.
Troubleshoot the system and reset the frequency converter
after the fault has been cleared.
WARNING 97, Stop delayed
Stopping the motor has been delayed due to short cycle
protection. 22-76 Interval between Starts is enabled.
Troubleshoot the system and reset the frequency converter
after the fault has been cleared.
WARNING 98, Clock fault
Time is not set or the RTC clock has failed. Reset the clock
in 0-70 Date and Time.
WARNING 200, Fire mode
This warning indicates the frequency converter is operating
in fire mode. The warning clears when fire mode is
removed. See the fire mode data in the alarm log.
WARNING 201, Fire mode was active
This indicates the frequency converter had entered fire
mode. Cycle power to the unit to remove the warning. See
the fire mode data in the alarm log.
WARNING 202, Fire mode limits exceeded
While operating in fire mode one or more alarm conditions
have been ignored which would normally trip the unit.
Operating in this condition voids unit warranty. Cycle
power to the unit to remove the warning. See the fire
mode data in the alarm log.
WARNING 203, Missing motor
With a frequency converter operating multi-motors, an
under-load condition was detected. This could indicate a
missing motor. Inspect the system for proper operation.
WARNING 204, Locked rotor
With a frequency converter operating multi-motors, an
overload condition was detected. This could indicate a
locked rotor. Inspect the motor for proper operation.
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VLT HVAC Drive Operating Instructions
WARNING 250, New spare part
A component in the frequency converter has been
replaced. Reset the frequency converter for normal
operation.
WARNING 251, New typecode
The power card or other components have been replaced
and the typecode changed. Reset to remove the warning
and resume normal operation.
MG11AJ02 - Rev. 2013-07-31