Danfoss VACON NXS Series Operating Manual page 208

Specifications
Operating Guide | VACON® NXS/NXP Air-cooled
12.10.39 Fault 8 - System fault, Subcode S48 - OPTAF: Mismatch between Therm Trip (HW)
parameter and jumper setting
Cause
The parameter Expander boards/ SlotB/ Therm Trip(HW) is set to OFF even though the jumper X12 is not cut.
Troubleshooting
Correct the parameter 7.2.1.1 Therm Trip (HW) to match the X12 jumper setting.
12.10.40 Fault 8 - System fault, Subcode S49 - OPTAF: Board mounted in VACON NXS control board
Cause
®
OPTAF is only compatible with VACON NXP.
Troubleshooting
Remove the OPTAF board.
12.10.41 Fault 8 - System fault, Subcode S50 - OPTAF: Filter discharge resistor fault
Cause
Problem with the control board.
Troubleshooting
Ask instructions from the local distributor.
12.10.42 Fault 8 - System fault, Subcode S70 - False fault activated
Cause
Fault in application.
Troubleshooting
Ask instructions from the local distributor.
12.10.43 Fault 9 - Undervoltage, Subcode S1 - DC-link too low during run
Cause
The DC-link voltage is lower than the limits.
208 | Danfoss A/S © 2020.02
AQ275638903263en-000301 / DPD00910