Fault

03

PV charging overcurrent.

5 Devices that report this code

What does the 03 error code mean?

03 on a Felicity unit indicates: PV charging overcurrent.. It is a fault-severity event that can appear on 5 different devices in the Felicity catalog. The same code may have slightly different recommended fixes depending on the device — the per-device sections below show the exact wording from each device's official manual.

This is a fault-severity code

Fault codes stop normal operation but the unit may attempt to recover. Common causes are out-of-range conditions (voltage, current, temperature) that require checking inputs and outputs before restart.

What triggers this code

03 is triggered when the unit's protection or monitoring logic detects the specific condition described above. The exact trigger depends on the device — see the per-device sections for the official manual entry for each.

IVCM1012 PROInverter↗ view on device
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
LUX-X-96050HG01Battery↗ view on device
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
LUX-Y-48100HG01Battery↗ view on device
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
LUX-Y-48100HG01MNBattery↗ view on device
03High Cell Voltage.Fault
Description

High Cell Voltage.

Source:LUX-Y-48100HG01MN User manual 358-S010025-03 0325(V2.0).pdf · page 27
SCCM3024-IIICharge controller↗ view on device
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

Frequently asked about 03

What is the 03 error on Felicity?
03 on a Felicity unit means: PV charging overcurrent.. It can appear on 5 different devices in the Felicity catalog. The cause and recommended fix are listed for each device on this page.
Can I clear the 03 code myself?
It depends on the severity. Warning-level codes can usually be cleared by following the recommended fix. Fault and critical codes often require checking the source condition first; if the code returns immediately after restart, escalate to authorized service.
Is the 03 fix the same on every device?
The cause is consistent — it's the same protection logic. The exact fix wording can differ per device because each official manual addresses model-specific context (input ranges, parallel-config notes, firmware revisions). Use the per-device section that matches your unit.
Where does this information come from?
Every entry is sourced directly from the official Felicity user manual for the affected device. The "Source" line at the bottom of each device's section shows the manual filename and page number.

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