What is the 11 error on Felicity?

11 on a Felicity unit means: Low battery.. It can appear on 7 different devices in the Felicity catalog. The cause and recommended fix are listed for each device on this page.

Can I clear the 11 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 11 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.

Fault

11

Q: What does 11 mean on IVCM1012 PRO?

Low battery. Recommended fix: The battery voltage is too low, it should be charging.

Q: What does 11 mean on LUX-X-96050HG01?

Analog Front End (AFE) fault detected by the BMS. Cause: Internal BMS measurement IC (AFE) malfunction. Recommended fix: Restart, if the fault still exists, contact our engineer.

Q: What does 11 mean on T-REX-3KLP1G01?

Over current happen at Buckboost. Recommended fix: Restart the unit, if the error persists, contact the repair center.

Low battery.

7 Devices that report this code

What does the 11 error code mean?

11 on a Felicity unit indicates: Low battery.. It is a fault-severity event that can appear on 7 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

11 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

11Low battery.Fault

Description

Low battery.

Recommended fix

The battery voltage is too low, it should be charging.

Source:ICM.pdf · page 13

LUX-S-1600LG01Battery↗ view on device

11PV1 overcurrent.Fault

Description

Fault event: PV input channel 1 current exceeded its limit (max input current 30A per MPPT).

Recommended fix

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

Source:LUX-S-1600LG01.pdf · page 22

LUX-X-96050HG01Battery↗ view on device

11AFE Fault.Critical

Description

Analog Front End (AFE) fault detected by the BMS.

Cause

Internal BMS measurement IC (AFE) malfunction.

Recommended fix

Restart, if the fault still exists, contact our engineer.

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

LUX-Y-48100HG01Battery↗ view on device

11AFE Fault.Fault

Description

Analog Front End (AFE) measurement fault detected by the BMS.

Recommended fix

Restart, if the fault still exists, contact our engineer.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20

LUX-Y-48100HG01MNBattery↗ view on device

11AFE Fault.Fault

Description

AFE (Analog Front End) fault.

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

SCCM3024-IIICharge controller↗ view on device

11MOS tube damaged.Critical

Description

The MOSFET (power switching transistor) inside the controller is damaged.

Cause

Internal MOSFET hardware failure, often caused by overcurrent, short circuit, or surge events.

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

11Over current happen at Buckboost.Fault

Description

Over current happen at Buckboost.

Recommended fix

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

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

Frequently asked about 11

What is the 11 error on Felicity?: 11 on a Felicity unit means: Low battery.. It can appear on 7 different devices in the Felicity catalog. The cause and recommended fix are listed for each device on this page.
Can I clear the 11 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 11 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.