Also applies to:FLA48200
What it means
Cell overvoltage
Cause: An individual cell reached its over-voltage protection value during charging, typically from cell imbalance letting one cell run ahead of the pack, so the BMS stopped charging.
How to fix it
- 1Restart the unit.
- 2If the error persists, contact the repair center.
Source: Felicitysolar FLA12100 12.5Kwh Battery Energy Storage System User Manual.pdf, p.1 · Felicitysolar FLA48200 48V 200Ah 10kWh Lithium Phosphate Battery User Manual.pdf, p.12
What it means
Cell overvoltage — Individual cell voltage has exceeded its upper protection threshold.
Cause: An individual cell reached its over-voltage protection value during charging, typically from cell imbalance letting one cell run ahead of the pack, so the BMS stopped charging.
How to fix it
- 1Restart the unit.
- 2If the error persists, contact the repair center.
Source: 6peluqppy_66a93554057c8.pdf, p.12
What it means
C03 — Cell overvoltage.
Cause: An individual cell reached its over-voltage protection value during charging, typically from cell imbalance letting one cell run ahead of the pack, so the BMS stopped charging.
How to fix it
- 1Restart the unit.
- 2If the error persists, contact the repair center.
Source: FLA48250-EU_Manual.pdf, p.8
Also applies to:HE-GF-FLA-48500
What it means
Cell overvoltage — Individual cell overvoltage protection triggered.
Cause: One or more cells exceeded the per-cell upper voltage limit.
How to fix it
- 1Restart the unit.
- 2If the error persists, contact the repair center.
Source: felicitysolar FLA48500 LiFePO4 Battery System for Households User Guide.pdf · HE-GF-FLA-48500 Manual_20250327_EN.pdf
What it means
Cell overvoltage — Cell overvoltage. Voltage of a single cell exceeded the rated upper protection threshold.
Cause: Single cell voltage reached protection value during charging.
How to fix it
- 1Restart the unit.
- 2If the error persists, return to repair centre.
Source: Benutzerhandbuch - Felicity FLS48100SG2.pdf
What it means
Single cell overvoltage — 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.
Cause: Cell imbalance during charging or charger settings allowing individual cells to drift above their safe ceiling.
How to fix it
Restart the unit, if the error persists, contact the repair center.
Source: 358-010291-07.pdf, p.8
Also applies to:LPBF48100-H
What it means
Single cell overvoltage — An individual cell voltage has exceeded the protection limit.
Cause: One cell voltage above safe upper threshold (cell imbalance or overcharge).
How to fix it
Restart the unit; if the error persists, contact the repair center.
Source: Manual-LPBF48200-H.pdf, p.10
What it means
C03
Cause: Cell overvoltage — a single cell reached the protection value during charging, typically from cell imbalance letting one cell drift above its safe ceiling.
How to fix it
Restart the unit, if the error persists, contact the repair center.
Source: Felicitysolar LPBF48350 17.5kWh 48V Solar Battery Pack with BMS User Guide.pdf
Also applies to:LUX-Y-48280LG01LUX-Y-48300LG01
What it means
Cell overvoltage
Cause: An individual cell voltage exceeded the upper protection threshold.
How to fix it
- 1Restart the unit.
- 2If the error persists, contact the repair center.
Source: LUX-E-48100LG03-Lithium-Battery-User-Guide.pdf, p.12 · LUX-Y-4828048300LG01-Lithium-Battery-User-Guide.pdf, p.8
Also applies to:LUX-E-48230LG03LUX-E-48250LG03
What it means
C03
Cause: Cell overvoltage — a single cell reached the protection value during charging, typically from cell imbalance letting one cell drift above its safe ceiling.
How to fix it
- 1Restart the unit.
- 2If the error persists, contact the repair center.
Source: LUX-E-48200LG03-Lithium-Battery-User-Guide.pdf, p.12 · LUX-E-48230.250LG03-Lithium-Battery-User-Guide.pdf
Also applies to:LUX-X-48050LCG01LUX-X-48050LMG01LUX-X-48050LG01M2LUX-X-48050LG01M3LUX-X-48050LG01M4
What it means
C03 — Cell overvoltage.
Cause: A single cell voltage reached the protection value during charging — typically cell imbalance letting one cell drift above its safe ceiling.
How to fix it
Restart the unit, if the error persists, contact the repair center.
Source: LUX-X-48050LG01-low-voltage-battery-user-guide.pdf, p.17
Also applies to:LUX-X-48100LCG01LUX-X-48100LMG01
What it means
Cell overvoltage — An individual cell voltage has exceeded its upper protection threshold.
Cause: A single cell voltage reached the protection value during charging — typically cell imbalance letting one cell drift above its safe ceiling.
How to fix it
Restart the unit; if the error persists, contact the repair center.
Source: LUX-X-48100LG01-Litium-Battery-User-Guide.pdf, p.17
Also applies to:LUX-X-48100LCG01-USLUX-X-48100LMG01-USLUX-X-48100LG01-USM2LUX-X-48100LG01-USM3LUX-X-48100LG01-USM4LUX-X-48100LG01-USM5LUX-X-48100LG01-USM6LUX-X-48100LG01-USM7+1
What it means
Cell overvoltage — An individual cell voltage has exceeded its upper protection threshold.
Cause: A single cell voltage reached the protection value during charging — typically cell imbalance letting one cell drift above its safe ceiling.
How to fix it
Restart the unit, if the error persists, contact the repair center.
Source: 358-S010024-03LUX-X-48100LG01-User-manual_compressed.pdf, p.23