Danfoss VLT HVAC Drive FC 102 Operating Manual page 113

Operating Guide | VLT® HVAC Drive FC 102
8.4.37 ALARM 39, Heat Sink Sensor
Cause
No feedback from the heat sink 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 gatedrive
card, or on the ribboncable between the power card and the gatedrive card.
8.4.38 WARNING 40, Overload of Digital Output Terminal 27
Troubleshooting
• Check the load connected to terminal 27 or remove the short-circuit connection.
• Check parameter 5-00 Digital I/O Mode and parameter 5-01 Terminal 27 Mode.
8.4.39 WARNING 41, Overload of Digital Output Terminal 29
Troubleshooting
• Check the load connected to terminal 29 or remove the short-circuit connection.
• Check parameter 5-00 Digital I/O Mode and parameter 5-02 Terminal 29 Mode.
8.4.40 WARNING 42, Ovrld X30/6-7
Troubleshooting
For terminal X30/6:
• Check the load connected to the terminal, or remove the short-circuit connection.
• Check parameter 5-32 Term X30/6 Digi out (MCB 101) (VLT® General Purpose I/O MCB 101).
For terminal X30/7:
• Check the load connected to the terminal, or remove the short-circuit connection.
• Check parameter 5-33 Term X30/7 Digi Out (MCB 101) (VLT® General Purpose I/O MCB 101).
8.4.41 ALARM 43, Ext. Supply
Either connect a 24 V DC external supply or specify that no external supply is used via parameter 14-80 Option Supplied by External
24VDC, [0] No. A change in parameter 14-80 Option Supplied by External 24VDC requires a power cycle.
Cause
VLT® Extended Relay Option MCB 113 is mounted without 24 V DC.
Troubleshooting
Choose 1 of the following:
• Connect a 24 V DC external supply.
• Specify that no external supply is used via parameter 14-80 Option Supplied by External 24VDC, [0] No. A change in parameter 14-80
Option Supplied by External 24VDC requires a power cycle.
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Maintenance, Diagnostics, and
Troubleshooting
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