Danfoss VLT FC 102 Programming Manual page 735

Programming Guide | VLT® HVAC Drive FC 102
ALARM 39, Heat Sink Sensor
Cause
There is no feedback from the heat sink temperature sensor. The signal from the IGBT thermal sensor is not available on the power card.
Troubleshooting
Check the ribbon cable between the power card and the gate drive card.
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Check for a defective power card.
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Check for a defective gate drive card.
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WARNING 40, Overload T27
Troubleshooting
Check the load connected to terminal 27 or remove the short-circuit connection.
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Check parameter 5-00 Digital I/O Mode and parameter 5-01 Terminal 27 Mode.
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WARNING 41, Overload T29
Troubleshooting
Check the load connected to terminal 29 or remove the short-circuit connection.
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Check parameter 5-00 Digital I/O Mode and parameter 5-02 Terminal 29 Mode.
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WARNING 42, Ovrld X30/6-7
Troubleshooting, X30/6
Check the load connected to the terminal or remove the short-circuit connection.
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Check parameter 5-32 Term X30/6 Digi Out (MCB 101)(VLT® General Purpose I/O MCB 101).
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Troubleshooting, X30/7
Check the load connected to the terminal or remove the short-circuit connection.
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Check parameter 5-33 Term X30/7 Digi Out (MCB 101)(VLT® General Purpose I/O MCB 101).
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WARNING 43, Ext. Supply
Cause
VLT® Extended Relay Option MCB 113 is mounted without 24 V DC. Select 1 of the options in the troubleshooting list.
Troubleshooting
Connect a 24 V DC external supply.
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Specify that no external supply is used via parameter 14-80 Option Supplied by External 24VDC set to [0] No. A change in parameter
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14-80 Option Supplied by External 24VDC requires a power cycle.
ALARM 45, Earth (Ground) Fault 2
Cause
A ground fault has occurred.
Troubleshooting
Check for proper grounding and loose connections.
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Check for proper wire size.
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Check the motor cables for short circuits or leakage currents.
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Troubleshooting
AU430028034214en-001901 / 130R0310 | 735