Can I clear the 01 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 01 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.

Warning

01

Q: What does 01 mean on LUX-X-96050HG01?

Battery pack voltage exceeds the upper threshold. Cause: Battery pack overall voltage too high (overcharge condition). Recommended fix: Stop charging.

Q: What does 01 mean on T-REX-3KLP1G01?

PV voltage is too high. Recommended fix: Reduce the number of PV modules in series.

High Battery Voltage.

5 Devices that report this code

What does the 01 error code mean?

01 on a Felicity unit indicates: High Battery Voltage.. It is a warning-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 warning-level code

Warning codes do not stop the unit. They flag a condition that should be addressed before it escalates — usually a near-threshold reading or a configuration check.

What triggers this code

01 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.

LUX-X-96050HG01Battery↗ view on device

01High Battery Voltage.Warning

Description

Battery pack voltage exceeds the upper threshold.

Cause

Battery pack overall voltage too high (overcharge condition).

Recommended fix

Stop charging.

Source:LUX-X-96050HG01-Lithium-Battery-User-Guide.pdf · page 21

LUX-Y-48100HG01Battery↗ view on device

01High Battery Voltage.Warning

Description

Battery pack 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

01High Battery Voltage.Fault

Description

High Battery Voltage.

Source:LUX-Y-48100HG01MN User manual 358-S010025-03 0325(V2.0).pdf · page 27

SCCM3024-IIICharge controller↗ view on device

01Over charge current.Critical

Description

Charging current exceeds the controller's safe operating limit.

Cause

Charging current has exceeded the maximum safe threshold of the charge controller, possibly due to a fault in the charging circuit or excessive PV input.

Recommended fix

1. Restart the charger. 2. if the problem remains, please contact your installer.

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

T-REX-3KLP1G01Inverter↗ view on device

01PV voltage is too high.Fault

Description

PV voltage is too high.

Recommended fix

Reduce the number of PV modules in series.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 37

Frequently asked about 01

What is the 01 error on Felicity?: 01 on a Felicity unit means: High Battery Voltage.. 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 01 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 01 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.