Fault

FAULT: LED1=ON, LED2=ON, LED3=ON, LED4=OFF (Green OFF, Red ON)

BMS Temperature High.

2 Devices that report this code

What does the FAULT: LED1=ON, LED2=ON, LED3=ON, LED4=OFF (Green OFF, Red ON) error code mean?

FAULT: LED1=ON, LED2=ON, LED3=ON, LED4=OFF (Green OFF, Red ON) on a Felicity unit indicates: BMS Temperature High.. 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

FAULT: LED1=ON, LED2=ON, LED3=ON, LED4=OFF (Green OFF, Red ON) 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.

LPBF24200-MBattery↗ view on device
FAULT: LED1=ON, LED2=ON, LED3=ON, LED4=OFF (Green OFF, Red ON)BMS Temperature High.Fault
Description

BMS / electronics over-temperature protection has tripped.

Cause

Insufficient ventilation around the unit, ambient temperature too high, or sustained high charge/discharge current.

Recommended fix

Stop charging/discharging and let the unit cool. Improve ventilation and ensure the ambient temperature is within 0-45 degC for installation per section 3.2.

Source:Felicitysolar LPBF24200-M LiFePO4 Battery System for Households User Guide.pdf · page 9
LPBF48250Battery↗ view on device
FAULT: LED1=ON, LED2=ON, LED3=ON, LED4=OFF (Green OFF, Red ON)BMS Temperature High.Fault
Description

BMS / electronics over-temperature protection has tripped. Listed in the FAULT row of the LED table on page 7 as 'BMS TEMPERATURE HIGH'.

Cause

Insufficient ventilation around the unit, ambient temperature too high, or sustained high charge / discharge current heating the BMS board. Per section 1.3 item 14 the unit must not be installed above 55 degC ambient or above 80% humidity; per section 3.2 the recommended ambient range is 0-45 degC.

Recommended fix

Stop charging / discharging and let the unit cool. Improve ventilation and ensure clearances around the unit per the section 3.2 mounting diagram, and verify ambient is within 0-45 degC.

Source:Battery Manual LPBF48250 (EN).pdf · page 7

Frequently asked about FAULT: LED1=ON, LED2=ON, LED3=ON, LED4=OFF (Green OFF, Red ON)

What is the FAULT: LED1=ON, LED2=ON, LED3=ON, LED4=OFF (Green OFF, Red ON) error on Felicity?
FAULT: LED1=ON, LED2=ON, LED3=ON, LED4=OFF (Green OFF, Red ON) on a Felicity unit means: BMS Temperature High.. 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 FAULT: LED1=ON, LED2=ON, LED3=ON, LED4=OFF (Green OFF, Red ON) 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 FAULT: LED1=ON, LED2=ON, LED3=ON, LED4=OFF (Green OFF, Red ON) 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.