Fault

LED1=OFF, LED2=ON, LED3=OFF, LED4=OFF

Battery Voltage Low.

2 Devices that report this code

What does the LED1=OFF, LED2=ON, LED3=OFF, LED4=OFF error code mean?

LED1=OFF, LED2=ON, LED3=OFF, LED4=OFF on a Felicity unit indicates: Battery Voltage Low.. It is a fault-severity event that can appear on 2 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

LED1=OFF, LED2=ON, LED3=OFF, LED4=OFF 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.

FLB48314TG1Battery↗ view on device
LED1=OFF, LED2=ON, LED3=OFF, LED4=OFFBattery Voltage Low.Fault
Description

Total battery pack voltage fell below the rated/protection value. Over-discharge protection activated; system stops supplying power externally.

Source:Felicity-FLB48314TG1-Manual.pdf
LPBF24200-MBattery↗ view on device
LED1=OFF, LED2=ON, LED3=OFF, LED4=OFFBattery Voltage Low.Warning
Description

Pack-level battery voltage is below the lower threshold (under-voltage / low-pack warning).

Cause

Excessive discharge or extended period without charging; pack approaching the cut-off voltage (24 V / 48 V).

Recommended fix

Charge the battery as soon as possible from mains or PV. The manual warns repeatedly that an over-discharged pack may fail to be re-activated by normal AC/PV wake-up.

Source:Felicitysolar LPBF24200-M LiFePO4 Battery System for Households User Guide.pdf · page 9

Frequently asked about LED1=OFF, LED2=ON, LED3=OFF, LED4=OFF

What is the LED1=OFF, LED2=ON, LED3=OFF, LED4=OFF error on Felicity?
LED1=OFF, LED2=ON, LED3=OFF, LED4=OFF on a Felicity unit means: Battery Voltage Low.. It can appear on 2 different devices in the Felicity catalog. The cause and recommended fix are listed for each device on this page.
Can I clear the LED1=OFF, LED2=ON, LED3=OFF, LED4=OFF 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 LED1=OFF, LED2=ON, LED3=OFF, LED4=OFF 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.