C04
Cell undervoltage.
C04Cell undervoltage.Fault
Cell undervoltage fault. LED pattern: LED1 OFF, LED2 OFF, LED3 ON, LED4 OFF.
Restart the unit. if the error persists, contact the repair center.
Felicitysolar FLA12100 12.5Kwh Battery Energy Storage System User Manual.pdf · page 1C04Cell undervoltage.Fault— high
Individual cell voltage dropped below the lower limit.
Restart the unit. if the error persists, contact the repair center.
Felicitysolar FLA48200 48V 200Ah 10kWh Lithium Phosphate Battery User Manual.pdf · page 12C04Cell undervoltage.Critical
Individual cell voltage has fallen below its lower protection threshold.
Restart the unit. if the error persists, contact the repair center.
6peluqppy_66a93554057c8.pdf · page 12C04C04Fault
Cell undervoltage.
Restart the unit. if the error persists, contact the repair center.
FLA48250-EU_Manual.pdf · page 8C04Cell undervoltage.Fault
Individual cell undervoltage protection triggered.
One or more cells dropped below the per-cell lower voltage limit.
Restart the unit. if the error persists, contact the repair center.
felicitysolar FLA48500 LiFePO4 Battery System for Households User Guide.pdfC04Zell-Unterspannung.Fault
Cell undervoltage. Voltage of a single cell fell below the rated lower protection threshold.
Cell voltage below protection value during discharge (Zellenspannung unter dem Schutzwert).
Restart the unit. if the error persists, return to repair centre.
Benutzerhandbuch - Felicity FLS48100SG2.pdfC04Cell undervoltage.Fault
Individual cell undervoltage protection triggered.
One or more cells dropped below the per-cell lower voltage limit.
Restart the unit. if the error persists, contact the repair center.
HE-GF-FLA-48500 Manual_20250327_EN.pdfC04Single cell undervoltage.Fault
Individual-cell under-voltage fault displayed on the LCD BMS fault code / flag screen (section 4.4); one or more cells fell below the lower cell-voltage limit.
Deep discharge or a weak / aged cell pulling below the under-voltage threshold.
Restart the unit, if the error persists, contact the repair center.
358-010291-07.pdf · page 8C04Single cell undervoltage.Fault
An individual cell voltage has dropped below the protection limit.
One cell voltage below safe lower threshold (cell imbalance or over-discharge).
Restart the unit; if the error persists, contact the repair center.
Manual-LPBF48200-H.pdf · page 10C04C04Fault
Restart the unit, if the error persists, contact the repair center.
Felicitysolar LPBF48350 17.5kWh 48V Solar Battery Pack with BMS User Guide.pdfC04Cell undervoltage.Fault
An individual cell voltage fell below the lower protection threshold.
Restart the unit. if the error persists, contact the repair center.
LUX-E-48100LG03-Lithium-Battery-User-Guide.pdf · page 12C04C04Fault
Restart the unit. if the error persists, contact the repair center.
LUX-E-48200LG03-Lithium-Battery-User-Guide.pdf · page 12C04C04Fault
Restart the unit. if the error persists, contact the repair center.
LUX-E-48230.250LG03-Lithium-Battery-User-Guide.pdfC04C04Fault
Cell undervoltage.
Restart the unit, if the error persists, contact the repair center.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17C04Cell undervoltage.Critical
An individual cell voltage has dropped below its lower protection threshold.
Restart the unit; if the error persists, contact the repair center.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 17C04Cell undervoltage.Critical
An individual cell voltage has dropped below its lower protection threshold.
Restart the unit, if the error persists, contact the repair center.
358-S010024-03LUX-X-48100LG01-User-manual_compressed.pdf · page 23C04Cell undervoltage.Fault
An individual cell voltage fell below the lower protection threshold.
Restart the unit. if the error persists, contact the repair center.
LUX-Y-4828048300LG01-Lithium-Battery-User-Guide.pdf · page 8Compiled from official FelicityESS user manuals. Always consult your device manual and a qualified technician before performing repairs.