UPS Status Messages
Liebert
®
NX
™
121
Balancer Fault
Internal VDC (+) and VDC (-) offset by over 50V exceeding the inverter DC offset compensation
capacity. Inverter shuts down. Load transfers to bypass.
Operation Invalid This record is registered following an incorrect operation.
Byp. Abnormal Shutdown Both bypass and inverter voltages unavailable. Load interruption
Setting Save Error History records not saved (Reserved)
Protocol version clash Firmware incompatibility between monitor board and digital signal processor board
MBP-T cabinet Fan Fault Maintenance bypass cabinet fans fault
Ext Input TX Overtemp External input isolation transformer overtemperature
Ext Output TX Overtemp External output isolation transformer overtemperature
Battery Room Alarm Environment in Battery Room Needs Attention
Rec Flash Update Rectifier firmware is being updated
Inv Flash Update Inverter firmware is being updated
Monitor Flash Update Monitor firmware is being updated
Input contactor fault Input contactor fault
LBS abnormal LBS is abnormal
DSP firmware error The inverter firmware is not compatible with the rectifier firmware.
Fan power fail Fan power has failed
Keyboard fault
Keyboard has a fault. Check the cable between keyboard with U2 board. Contact Liebert
Services at 800-543-2378 for assistance.
KVA Invalid
An invalid kVA has been configured in unit.Contact Liebert Services at 800-543-2378 for
assistance.
KVA updated The capacity updating is successful.
Output ground fault Output Line is shorted with ground
Table 49 UPS status messages
Event Message Description / Suggested Action (if any)
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