The Felicity LPBF48250 is a Battery unit covered by a shared firmware family that includes 2 variants. The error codes listed below apply to every variant in this family — LPBF48250, LPBF48300. If your unit's exact model number isn't shown in the title but is listed in the "also covers" tags, this is the correct reference page.
Each row below shows an error code, its severity, and a brief description. Click any row to expand the full cause and the recommended fix. The severity dot tells you whether the unit will keep operating (warning), derate (fault), or trip offline (critical). For codes that require an authorized service partner, the recommended-fix block says so explicitly.
BMS / electronics under-temperature protection has tripped. Listed in the FAULT row of the LED table on page 7 as 'BMS TEMPERATURE LOW'.
Ambient temperature below the BMS operating range. Section 1.3 item 14 forbids installation below 0 degC.
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.
Battery Manual LPBF48250 (EN).pdf · page 7Individual-cell under-voltage protection has tripped; one or more cells have fallen below the lower cell-voltage limit. Listed in the FAULT row of the LED table on page 7 as 'CELL VOLTAGE LOW'.
Deep discharge or a weak / aged cell pulling below the under-voltage threshold.
Stop the load and recharge as soon as possible. if a single cell repeatedly trips the protection, return the pack to your supplier for service (section 1.3 warns only qualified service persons may service the device).
Battery Manual LPBF48250 (EN).pdf · page 7Pack-level under-voltage protection has tripped; output is disabled. Listed in the FAULT row of the LED table on page 7 as 'BATTERY VOLTAGE LOW'.
Pack voltage fell below the BMS under-voltage threshold during discharge — typically at or near the 48 V cut-off voltage (section 2.4).
Stop the load immediately and recharge from mains or PV as soon as possible. Section 1.4 warns repeatedly that an over-discharged pack may fail to be re-activated by the AC or PV activation cable, so do not attempt repeated activation cycles on a depleted pack.
Battery Manual LPBF48250 (EN).pdf · page 7Cell-pack under-temperature protection has tripped. Listed in the FAULT row of the LED table on page 7 as 'CELL TEMPERATURE LOW'.
Cell temperature below the allowed range — charging is permitted only between 0 and +55 degC, discharging between -20 and +65 degC (section 2.3 spec).
Warm the battery to within the operating range before resuming use. Do not install or operate in an environment below 0 degC (section 1.3 item 14).
Battery Manual LPBF48250 (EN).pdf · page 7Discharge over-current protection has tripped; output is disabled. Listed in the FAULT row of the LED table on page 7 as 'DISCHARGING CURRENT HIGH'.
Load drew more current than the recommended discharge limit (recommended <=120 A, MAX 200 A for 15 s per section 2.3) or a short circuit on the DC output. Section 1.3 item 11 warns NEVER to cause AC output / DC input short circuits.
Remove or reduce the load, check the DC output wiring for short circuits, and restart the pack. For loads above 6 kVA install at least 2 packs in parallel (section 1.3 item 9). MAX. Output Power is 10 000 W; recommended output power is 6 000 W (section 2.3).
Battery Manual LPBF48250 (EN).pdf · page 7Pack-level over-voltage protection has tripped; output is disabled. Listed in the FAULT row of the LED table on page 7 as 'BATTERY VOLTAGE HIGH'.
Pack voltage exceeded the BMS over-voltage threshold during charging — e.g. charger output above the recommended Max. Charging Voltage of 57.6 V (section 2.4).
Stop charging, verify the charger / inverter Max. Charging Voltage and Floating Charging Voltage are set to 57.6 V per section 2.4, and allow the pack voltage to fall back into the 48-57.6 V range before re-enabling output.
Battery Manual LPBF48250 (EN).pdf · page 7Cell-pack over-temperature protection has tripped. Listed in the FAULT row of the LED table on page 7 as 'CELL TEMPERATURE HIGH'.
Cells heated above the safe operating temperature. Per the section 2.3 spec the working temperature range is Discharge -20 to +65 degC and Charge 0 to +55 degC; this fault trips when cells exceed those limits.
Stop charging / discharging, let the pack cool, and improve ventilation. if the fault persists at normal ambient temperature, contact the supplier for service (section 1.3 items 3 and 12 — only qualified service persons may open the unit).
Battery Manual LPBF48250 (EN).pdf · page 7Charge over-current protection has tripped. Listed in the FAULT row of the LED table on page 7 as 'CHARGING CURRENT HIGH'.
Charge current exceeded the recommended limit. Per section 2.3 the recommended charge & discharge current is <=120 A and the absolute MAX is 200 A for 15 s; per section 2.4 Max. Charging Current is 120 A * N (N = number of packs in parallel). The protection trips when these limits are exceeded.
Reduce the charge current at the charger / inverter to within 120 A per pack (section 2.4). For inverters larger than 6 kVA, install at least 2 sets of LPBF48V in parallel connection (section 1.3 item 9 and section 3.2).
Battery Manual LPBF48250 (EN).pdf · page 7Individual-cell over-voltage protection has tripped; one or more cells have exceeded the upper cell-voltage limit. Listed in the FAULT row of the LED table on page 7 as 'CELL VOLTAGE HIGH'.
Cell imbalance during charging, or a charger setting that allows individual cells to drift above their safe ceiling.
Stop charging, allow the BMS to balance the cells, and review charger / inverter charge-voltage settings against section 2.4 (Max. Charging Voltage 57.6 V). if the condition persists the pack may need service — only qualified personnel may open the unit (section 1.3, items 3 and 12).
Battery Manual LPBF48250 (EN).pdf · page 7BMS current-sensor diagnostic failure; the pack cannot reliably measure charge / discharge current. Listed in the FAULT row of the LED table on page 7 as 'CURRENT SENSOR ABNOMAL' (sic in source).
Internal current-sensor fault or wiring problem on the BMS board.
Power-cycle the pack (press and hold On/Off for 3 s to shut down per section 4.1, then re-enable). if the fault persists, do not continue to use the unit — section 1.3 items 3 and 12 require that only qualified service persons service the device. Contact your supplier per the warranty / damaged-battery guidance in section 5.
Battery Manual LPBF48250 (EN).pdf · page 7BMS / electronics over-temperature protection has tripped. Listed in the FAULT row of the LED table on page 7 as 'BMS TEMPERATURE HIGH'.
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.
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.
Battery Manual LPBF48250 (EN).pdf · page 7Write down the exact code shown on the display, what the unit was doing when it appeared (charging, discharging, idle, grid-tied), and any LEDs or audible alarms. The same code can have different fixes depending on context.
Find the code in the list below and read the cause + recommended fix. Most warning-level codes can be cleared by following the listed action — usually reducing load, checking wiring, or restarting the unit.
Each code shows the source manual filename and page number. Open that exact page in the official manual to verify model-specific notes (firmware version, parallel-config notes, regional variants) before acting.
If a fix requires opening the enclosure or accessing terminals, disconnect AC input, DC PV, and battery in that order. Wait at least 60 seconds for capacitors to discharge before touching any conductors.
Critical codes (short-circuit, IGBT failure, BMS hardware error) should not be cleared by end users. Note the code, model number, and source manual page, then contact an authorized service partner.
Compiled from official Felicity user manuals. Always consult your device manual and a qualified technician before performing repairs.