Xantrex Freedom EX 4000 error code 48 (DC Under Voltage Shutdown)
[F] Manual fault, inverter (battery) mode: battery voltage stayed below the LBCO setting for longer than the LBCO shutdown delay timer.
What to check, and in what order, is in the app. A step-by-step flow walks this code with the pass/fail measurements, wiring schematics and procedures that go with it, and it works offline in the bay.
Start free trial 14 days free, no card neededDocumented in
- Freedom EX 4000 Inverter/Charger with 48VDC-to-12VDC Converter Owner's Guide 975-0999-01-01 Rev F (May 2025)Xantrex LLC
Related codes
- 44 (Battery Over Temperature Shutdown)[F] Manual fault, any mode: the battery temperature sensor reports…
- 45 (Capacitor Over Temperature Shutdown)[F] Manual fault, any mode: internal capacitor over temperature.
- 46 (Controller Fault)[F] Manual fault, any mode: controller fault - service required.
- 47 (DC Under Immediate Voltage Shutdown)[F] Manual fault, inverter (battery) mode: the 48 V battery voltage…
- 49 (DC Over Voltage Shutdown)[F] Manual fault, inverter (battery) mode: 48 V input above the…
- 51-56 (EEPROM Error)[F] Manual fault, any mode: EEPROM error.
- 57 / 58 (FET1 / FET2 Over Temperature Shutdown)[F] Manual fault, any mode: inverter power FET bank 1 or 2 over…
- 59 (Manual Configuration)[F] Manual fault, any mode: the auto-configuration process failed.