Troubleshooting
•
Check that the ambient operating temperature is
within limits.
•
Check for clogged filters.
•
Check fan operation.
•
Check the control card.
WARNING 66, Heatsink temperature low
The adjustable frequency drive is too cold to operate. This
warning is based on the temperature sensor in the IGBT
module.
Increase the ambient temperature of the unit. Also, a
trickle amount of current can be supplied to the adjustable
frequency drive whenever the motor is stopped by setting
2-00 DC Hold/Preheat Current
at 5% and
1-80 Function at
Stop
ALARM 67, Option module configuration has changed
One or more options have either been added or removed
since the last power-down. Check that the configuration
change is intentional and reset the unit.
ALARM 68, Safe Stop activated
Loss of the 24 V DC signal on terminal 37 has caused the
filter to trip. To resume normal operation, apply 24 V DC to
terminal 37 and reset the filter.
ALARM 69, Power card temperature
The temperature sensor on the power card is either too
hot or too cold.
Troubleshooting
Check that the ambient operating temperature is
within limits.
Check for clogged filters.
Check fan operation.
Check the power card.
ALARM 70, Illegal FC configuration
The control card and power card are incompatible. Contact
your supplier with the type code of the unit from the
nameplate and the part numbers of the cards to check
compatibility.
ALARM 78, Tracking errorDrive initialized to default
value
Parameter settings are initialized to default settings after a
manual reset. Reset the unit to clear the alarm.
ALARM 92, No-Flow
A no-flow condition has been detected in the system.
22-23 No-Flow Function
is set for alarm. Troubleshoot the
system and reset the adjustable frequency drive after the
fault has been cleared.
ALARM 93, Dry pump
A no-flow condition in the system with the adjustable
frequency drive operating at high speed may indicate a
dry pump.
22-26 Dry Pump Function
is set for alarm.
Troubleshoot the system and reset the adjustable
frequency drive after the fault has been cleared.
ALARM 94, End of curve
Feedback is lower than the setpoint. This may indicate
leakage in the system.
22-50 End of Curve Function
is set for
alarm. Troubleshoot the system and reset the adjustable
frequency drive 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 adjustable
frequency drive after the fault has been cleared.
ALARM 96, Start delayed
Motor start has been delayed due to short-cycle
protection.
22-76 Interval between Starts
is enabled.
Troubleshoot the system and reset the adjustable
frequency drive 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 adjustable
frequency drive 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 300 [200], Fire mode
This warning indicates the adjustable frequency drive 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 adjustable frequency drive 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 an adjustable frequency drive operating multi-motors,
an underload condition was detected. This could indicate a
missing motor. Inspect the system for proper operation.
Troubleshooting
Service Manual
MG94A222
Danfoss A/S © Rev. 2014-02-10 All rights reserved.
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Summary of Contents for VLT FC 103
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