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8 Troubleshooting
Please confirm the spare part and its power card are the correct part
number.
WARNING 73, Safe stop auto restart
Safe stopped. Note that with automatic restart enabled, the motor may
start when the fault is cleared.
WARNING 77, Reduced power mode:
This warning indicates that the drive is operating in reduced power mode
(i.e., less than the allowed number of inverter sections). This warning will
be generated on power cycle when the drive is set to run with fewer
inverters and will remain on.
ALARM 79, Illegal power section configuration
The scaling card is the incorrect t number or not installed. Also MK102
connector on the power card could not be installed.
ALARM 80, Drive initialized to default value
Parameter settings are initialized to default settings after a manual reset.
ALARM 91, Analog input 54 wrong settings
Switch S202 has to be set in position OFF (voltage input) when a KTY
sensor is connected to analog input terminal 54.
ALARM 92, No flow
A no-load situation has been detected in the system. See parameter
group 22-2.
8
ALARM 93, Dry pump
A no-flow situation and high speed indicates that the pump has run dry.
See parameter group 22-2.
ALARM 94, End of curve
Feedback stays lower than the setpoint which may indicate leakage in the
pipe system. See parameter group 22-5.
ALARM 95, Broken belt
Torque is below the torque level set for no load, indicating a broken belt.
See parameter group 22-6.
ALARM 96, Start delayed
Motor start has been delayed due to short-cycle protection active. See
parameter group 22-7.
WARNING 97, Stop delayed
Stopping the motor has been delayed due to short cycle protection is
active. See parameter group 22-7.
WARNING 98, Clock fault
Clock Fault. Time is not set or RTC clock (if mounted) has failed. See
parameter group 0-7.
WARNING 201, Fire Mode was Active
Fire mode has been active.
WARNING 202, Fire Mode Limits Exceeded
Fire mode has suppressed one or more warranty voiding alarms.
WARNING 203, Missing Motor
A multi-motor underload situation was detected, this could be due to, for
example, a missing motor.
WARNING 204, Locked Rotor
A multi-motor overload situation was detected, which could be due to,
e.g., a locked rotor.
8-10
ALARM 243, Brake IGBT
This alarm is only for F Frame drives. It is equivalent to Alarm 27. The
report value in the alarm log indicates which power module generated
the alarm:
1 = left most inverter module.
2 = middle inverter module in F2 or F4 drive.
2 = right inverter module in F1 or F3 drive.
3 = right inverter module in F2 or F4 drive.
5 = rectifier module.
ALARM 244, Heatsink temperature
This alarm is only for F Frame drives. It is equivalent to Alarm 29. The
report value in the alarm log indicates which power module generated
the alarm:
1 = left most inverter module.
2 = middle inverter module in F2 or F4 drive.
2 = right inverter module in F1 or F3 drive.
3 = right inverter module in F2 or F4 drive.
5 = rectifier module.
ALARM 245, Heatsink sensor
This alarm is only for F Frame drives. It is equivalent to Alarm 39. The
report value in the alarm log indicates which power module generated
the alarm:
1 = left most inverter module.
2 = middle inverter module in F2 or F4 drive.
2 = right inverter module in F1 or F3 drive.
3 = right inverter module in F2 or F4 drive.
5 = rectifier module.
ALARM 246, Power card supply
This alarm is only for F Frame drives. It is equivalent to Alarm 46. The
report value in the alarm log indicates which power module generated
the alarm:
1 = left most inverter module.
2 = middle inverter module in F2 or F4 drive.
2 = right inverter module in F1 or F3 drive.
3 = right inverter module in F2 or F4 drive.
5 = rectifier module.
ALARM 247, Power card temperature
This alarm is only for F Frame drives. It is equivalent to Alarm 69. The
report value in the alarm log indicates which power module generated
the alarm:
1 = left most inverter module.
2 = middle inverter module in F2 or F4 drive.
2 = right inverter module in F1 or F3 drive.
3 = right inverter module in F2 or F4 drive.
5 = rectifier module.
MG.11.AB.22 - VLT
®
is a registered Danfoss trademark
VLT
®
HVAC Drive Instruction Manual
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