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Troubleshooting

• Check wiring.

• Check the on-board temperture sensor.

• Replace fan power card.

9.3.98 ALARM 423, FPC Updating

Cause

The alarm is generated when the fan power card reports it has an invalid PUD. The control card attempts to update the PUD. A

subsequent alarm can result depending on the update. See Alarm 424, FPC Update Successful and Alarm 425 FPC Update Failure.

9.3.99 ALARM 424, FPC Update Successful

Cause

This alarm is generated when the control card has successfully updated the fan power card PUD.

Troubleshooting

• Press [Reset] to stop the alarm.

9.3.100 ALARM 425, FPC Update Failure

Cause

This alarm is generated after the control card failed to update the fan power card PUD.

Troubleshooting

• Check the fan power card wiring.

• Replace fan power card.

• Contact supplier.

9.3.101 ALARM 426, FPC Config

Cause

The number of found fan power cards do not match the number of configured fan power cards. See parameter group 15-6* Option Ident

for the number of configured fan power cards.

Troubleshooting

• Check fan power card wiring.

• Replace fan power card.

Maintenance, Diagnostics, and

Troubleshooting

Operating Guide | VLT® AQUA Drive FC 202

AQ262141056213en-000101 / 130R0882

Danfoss VLT AQUA Drive FC 202 User Manual

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