Danfoss VACON NX All-in-One Application Manual page 338

VACON® NX All-in-One
Application Guide
Troubleshooting
If the fault occurs again, ask instructions from the local distributor.
11.1.64 Fault 18 - Unbalance, Subcode S2 - DC voltage unbalance
Cause
Unbalance between power modules in paralleled power units.
This fault is type A fault (Alarm).
Troubleshooting
If the fault occurs again, ask instructions from the local distributor.
11.1.65 Fault 19 - Current overload
Cause
Motor current overload warning.
Troubleshooting
Ask instructions from the local distributor.
11.1.66 Fault 22 - Parameter fault, Subcode S1 - Firmware interface power down variable checksum
error
Cause
Parameter save fault.
• Operation malfunction
• defective component
Troubleshooting
If the fault occurs again, ask instructions from the local distributor.
11.1.67 Fault 22 - Parameter fault, Subcode S2 - Firmware interface variable check sum error
Cause
Parameter save fault.
• Operation malfunction
• defective component
Troubleshooting
If the fault occurs again, ask instructions from the local distributor.
11.1.68 Fault 22 - Parameter fault, Subcode S3 - System power down variable check sum error
Cause
Parameter save fault.
• Operation malfunction
• defective component
Troubleshooting
If the fault occurs again, ask instructions from the local distributor.
11.1.69 Fault 22 - Parameter fault, Subcode S4 - System parameter checksum error
Cause
Parameter save fault.
• Operation malfunction
• defective component
Troubleshooting
If the fault occurs again, ask instructions from the local distributor.
338 | Danfoss A/S © 2023.02
Fault Tracing
AB296635287482en-000301 / DPD00903