Fault

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

BMS Temperature Low.

2 Devices that report this code
LPBF24200-MBattery↗ view on device
FAULT: LED1=OFF, LED2=OFF, LED3=OFF, LED4=ON (Green OFF, Red ON)BMS Temperature Low.Fault
Description

BMS / electronics under-temperature protection has tripped.

Cause

Ambient temperature below the BMS operating range.

Recommended fix

Move the battery to a warmer environment; do not operate below 0 degC for charging. Allow the BMS to warm before resuming use.

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

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

Cause

Ambient temperature below the BMS operating range. Section 1.3 item 14 forbids installation below 0 degC.

Recommended fix

Move the battery to a warmer environment; do not install or operate below 0 degC. Allow the BMS to warm into the 0-45 degC operating range (section 3.2) before resuming use.

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

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