Fault

03

PV charging overcurrent.

5 Devices that report this code
03PV charging overcurrent.Fault
Description

PV charging overcurrent.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:ICM.pdf · page 13
03High Cell Voltage.Warning
Description

Individual cell voltage exceeds maximum allowed value.

Cause

Cell-level overvoltage (imbalance or overcharge of a single cell).

Recommended fix

Stop charging.

Source:LUX-X-96050HG01-Lithium-Battery-User-Guide.pdf · page 21
03High Cell Voltage.Warning
Description

Individual cell voltage exceeded the upper threshold.

Recommended fix

Stop charging.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20
03High Cell Voltage.Fault
Description

High Cell Voltage.

Source:LUX-Y-48100HG01MN User manual 358-S010025-03 0325(V2.0).pdf · page 27
03Battery voltage is too low.Critical
Description

The connected battery voltage has dropped below the acceptable minimum threshold.

Cause

Loose, broken, or improperly connected battery wiring, or a deeply discharged/damaged battery.

Recommended fix

1. Check the battery wire connection. 2. if the wire connection is ok, please contact your installer.

Source:felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf · page 18

Compiled from official FelicityESS user manuals. Always consult your device manual and a qualified technician before performing repairs.