Specifications

No. Text
1315 Option SW in slot A is not supported (not
allowed).
1316 Option SW in slot B is not supported (not
allowed).
1318 Option SW in slot C1 is not supported (not
allowed).
1379-2819 Internal fault. Contact your Danfoss supplier or
Danfoss Service Department.
2820 LCP stack overflow.
2821 Serial port overflow.
2822 USB port overflow.
3072-5122 Parameter value is outside its limits.
5123 Option in slot A: Hardware incompatible with
control board hardware.
5124 Option in slot B: Hardware incompatible with
control board hardware.
5125 Option in slot C0: Hardware incompatible with
control board hardware.
5126 Option in slot C1: Hardware incompatible with
control board hardware.
5376-6231 Internal fault. Contact your Danfoss supplier or
Danfoss Service Department.
Table 8.26 Internal Fault Codes
ALARM 39, Heatsink sensor
No feedback from the heatsink temperature sensor.
The signal from the IGBT thermal sensor is not available on
the power card. The problem could be on the power card,
gate drive card, or ribbon cable between the power card
and gate drive card.
WARNING 40, Overload of digital output terminal 27
Check the load connected to terminal 27 or remove short-
circuit connection. Check E-00 Digital I/O Mode and
E-51 Terminal 27 Mode.
WARNING 41, Overload of digital output terminal 29
Check the load connected to terminal 29 or remove short-
circuit connection. Check E-00 Digital I/O Mode and
E-52 Terminal 29 Mode.
WARNING 42, Overload of digital output on X30/6 or
overload of digital output on X30/7
For X30/6, check the load connected to X30/6 or remove
the short-circuit connection. Check 5-32 Term X30/6 Digi
Out (MCB 101).
For X30/7, check the load connected to X30/7 or remove
the short-circuit connection. Check 5-33 Term X30/7 Digi
Out (MCB 101).
ALARM 45, Earth fault 2
Earth (ground) fault on start up.
Troubleshooting
Check for proper earthing (grounding) and loose
connections.
Check for proper wire size.
Check motor cables for short-circuits or leakage
currents.
ALARM 46, Power card supply
The supply on the power card is out of range.
There are 3 power supplies generated by the switch mode
power supply (SMPS) on the power card: 24 V, 5 V, +/- 18
V. When powered with 24 V DC with the MCB 107 option,
only the 24 V and 5 V supplies are monitored. When
powered with three phase mains voltage, all 3 supplies are
monitored.
Troubleshooting
Check for a defective power card.
Check for a defective control card.
Check for a defective option card.
If a 24 V DC power supply is used, verify proper
supply power.
WARNING 47, 24 V supply low
The 24 V DC is measured on the control card. The external
24 V DC backup power supply may be overloaded. If not
contact Danfoss.
WARNING 48, 1.8 V supply low
The 1.8 V DC supply used on the control card is outside of
allowable limits. The power supply is measured on the
control card. Check for a defective control card. If an
option card is present, check for an overvoltage condition.
WARNING 49, Speed limit
When the speed is not within the specified range in
F-18 Motor Speed Low Limit [RPM] and F-17 Motor Speed
High Limit [RPM], the frequency converter shows a warning.
When the speed is below the specified limit in H-36 Trip
Speed Low [RPM] (except when starting or stopping) the
frequency converter trips.
ALARM 50, AMA calibration failed
Contact the Danfoss supplier or service department.
ALARM 51, AMA check U
nom
and I
nom
The settings for motor voltage, motor current, and motor
power are wrong. Check the settings in parameters 1-20 to
1-25.
ALARM 52, AMA low I
nom
The motor current is too low. Check the settings.
ALARM 53, AMA motor too big
The motor is too big for the AMA to operate.
ALARM 54, AMA motor too small
The motor is too small for the AMA to operate.
ALARM 55, AMA Parameter out of range
The parameter values of the motor are outside of the
acceptable range. AMA will not run.
General Specifications and ... VLT® HVAC Drive FC 102 Design Guide
MG16C102 - Rev. 2013-08-20 209
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