C03
Cell overvoltage.
C03Cell overvoltage.Fault
Cell overvoltage fault. LED pattern: LED1 ON, LED2 ON, LED3 OFF, 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 1C03Cell overvoltage.Fault— high
Individual cell voltage exceeded the upper limit.
Restart the unit. if the error persists, contact the repair center.
Felicitysolar FLA48200 48V 200Ah 10kWh Lithium Phosphate Battery User Manual.pdf · page 12C03Cell overvoltage.Critical
Individual cell voltage has exceeded its upper protection threshold.
Restart the unit. if the error persists, contact the repair center.
6peluqppy_66a93554057c8.pdf · page 12C03C03Fault
Cell overvoltage.
Restart the unit. if the error persists, contact the repair center.
FLA48250-EU_Manual.pdf · page 8C03Cell overvoltage.Fault
Individual cell overvoltage protection triggered.
One or more cells exceeded the per-cell upper voltage limit.
Restart the unit. if the error persists, contact the repair center.
felicitysolar FLA48500 LiFePO4 Battery System for Households User Guide.pdfC03Zell-Überspannung.Fault
Cell overvoltage. Voltage of a single cell exceeded the rated upper protection threshold.
Single cell voltage reached protection value during charging (Einzelzellenspannung erreichte den Schutzwert).
Restart the unit. if the error persists, return to repair centre.
Benutzerhandbuch - Felicity FLS48100SG2.pdfC03Cell overvoltage.Fault
Individual cell overvoltage protection triggered.
One or more cells exceeded the per-cell upper voltage limit.
Restart the unit. if the error persists, contact the repair center.
HE-GF-FLA-48500 Manual_20250327_EN.pdfC03Single cell overvoltage.Fault
Individual-cell over-voltage fault displayed on the LCD BMS fault code / flag screen (section 4.4); one or more cells exceeded the upper cell-voltage limit.
Cell imbalance during charging or charger settings allowing individual cells to drift above their safe ceiling.
Restart the unit, if the error persists, contact the repair center.
358-010291-07.pdf · page 8C03Single cell overvoltage.Fault
An individual cell voltage has exceeded the protection limit.
One cell voltage above safe upper threshold (cell imbalance or overcharge).
Restart the unit; if the error persists, contact the repair center.
Manual-LPBF48200-H.pdf · page 10C03C03Fault
Restart the unit, if the error persists, contact the repair center.
Felicitysolar LPBF48350 17.5kWh 48V Solar Battery Pack with BMS User Guide.pdfC03Cell overvoltage.Fault
An individual cell voltage exceeded the upper protection threshold.
Restart the unit. if the error persists, contact the repair center.
LUX-E-48100LG03-Lithium-Battery-User-Guide.pdf · page 12C03C03Fault
Restart the unit. if the error persists, contact the repair center.
LUX-E-48200LG03-Lithium-Battery-User-Guide.pdf · page 12C03C03Fault
Restart the unit. if the error persists, contact the repair center.
LUX-E-48230.250LG03-Lithium-Battery-User-Guide.pdfC03C03Fault
Cell overvoltage.
Restart the unit, if the error persists, contact the repair center.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17C03Cell overvoltage.Critical
An individual cell voltage has exceeded its upper protection threshold.
Restart the unit; if the error persists, contact the repair center.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 17C03Cell overvoltage.Critical
An individual cell voltage has exceeded its upper protection threshold.
Restart the unit, if the error persists, contact the repair center.
358-S010024-03LUX-X-48100LG01-User-manual_compressed.pdf · page 23C03Cell overvoltage.Fault
An individual cell voltage exceeded the upper 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.