WARNING/ALARM 36, Mains failure
This warning/alarm is only active if the supply voltage to
the frequency converter is lost and
14-10 Mains Failure
is
NOT set to [0]
No Function
. Check the fuses to the
frequency converter and mains power supply to the unit.
ALARM 38, Internal fault
When an internal fault occurs, a code number defined in
is displayed.
Troubleshooting
Cycle power
Check that the option is properly installed
Check for loose or missing wiring
It may be necessary to contact your Danfoss supplier or
service department. Note the code number for further
troubleshooting directions.
No.
Text
0
Serial port cannot be initialised. Contact your
Danfoss supplier or Danfoss Service Department.
256-258
Power EEPROM data is defective or too old
512-519
Internal fault. Contact your Danfoss supplier or
Danfoss Service Department.
783
Parameter value outside of min/max limits
1024-1284 Internal fault. Contact your Danfoss supplier or the
Danfoss Service Department.
1299
Option SW in slot A is too old
1300
Option SW in slot B is too old
1302
Option SW in slot C1 is too old
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 8.3 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,
on the gate drive card, or the 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
5-00 Digital I/O Mode
and
5-01 Terminal 27 Mode
.
WARNING 41, Overload of digital output terminal 29
Check the load connected to terminal 29 or remove short-
circuit connection. Check
5-00 Digital I/O Mode
and
5-02 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 three 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 three
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, 24V supply low
The 24 V DC is measured on the control card. The external
24 V DC backup power supply may be overloaded,
otherwise contact your Danfoss supplier.
WARNING 48, 1.8V 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.
Warnings and Alarms
VLT
®
HVAC Drive Operating Instructions
MG11AH02 - VLT
®
is a registered Danfoss trademark
59
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