Danfoss VACON NXS Series Operating Manual page 221

Specifications
Operating Guide | VACON® NXS/NXP Air-cooled
12.10.90 Fault 40 - Device unknown, Subcode S4 - Wrong PropertiesType in control board EEPROM
Cause
An unknown or mismatching device was connected (the power unit or option board).
Troubleshooting
Ask instructions from the local distributor.
12.10.91 Fault 40 - Device unknown, Subcode S5 - Wrong VACON® NXP control board EEPROM size
detected
Cause
An unknown or mismatching device was connected (the power unit or option board).
Troubleshooting
Ask instructions from the local distributor.
12.10.92 Fault 40 - Device unknown, Subcode S6 - Old power unit (Asic) and new software mismatch
Cause
An unknown or mismatching device was connected (the power unit or option board).
Troubleshooting
Ask instructions from the local distributor.
12.10.93 Fault 40 - Device unknown, Subcode S7 - Old ASIC detected
Cause
An unknown or mismatching device was connected (the power unit or option board).
Troubleshooting
Ask instructions from the local distributor.
12.10.94 Fault 41 - IGBT temperature, Subcode S1 - Calculated IGBT temperature too high
Cause
IGBT Inverter Bridge overtemperature protection has detected too high a short-term overload current.
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