Danfoss · VLT HVAC Drive High Power
A fitted option card is not operational with the current control board hardware or software version. This indicates an incompatibility preventing proper functioning of the option.
Click steps to track your progress.
Verify the part number and firmware version of the installed option card against the frequency converter's compatibility matrix in the manufacturer's manual.
Check the frequency converter's control board firmware version (e.g., parameter 15-00 FC Type) and compare it with the option card's requirements.
Remove the option card and reseat it firmly into its designated slot on the control board, ensuring connectors are fully engaged.
If available, try installing a known good, compatible option card into the slot to rule out a faulty slot on the main control board.
Consult the frequency converter manual for specific instructions on option card installation and potential firmware upgrade procedures.