Where can I find the official Felicity FLA48500 error code manual?

Each code on this page lists the official source manual filename and page number at the bottom. The manuals are published by Felicity on their website; we compile the codes here so you can search across all of them at once instead of opening each PDF.

Is the FLA48500 the same as other Felicity models?

Some Felicity units share firmware across a family of variants — the same fault codes apply to multiple model numbers. Look at the "also covers" chips below the title to see which other model numbers this page applies to.

What's the most critical code on a Felicity FLA48500?

Critical-severity codes (red dot) are the ones that trip the unit offline immediately — typically short-circuit, IGBT, or BMS hardware failures. These are listed first when you filter by severity. Do not bypass them; they indicate a hardware or safety condition that requires service.

What does C07 mean on FLA48500?

MOSFET (BMS power switch) over-temperature protection. Cause: 1. The inner temperature is over the limitation. 2. Check whether the ambient temperature is too high. Fix: Reduce ambient temperature / improve ventilation; restart the unit. if the error persists, return to repair center.

What does C08 mean on FLA48500?

MOSFET (BMS power switch) under-temperature protection. Cause: 1. The internal temperature is lower than the limit range. 2. Check whether the ambient temperature is too low. Fix: Raise ambient temperature into operating range (charging 0-55°C; discharging -20-55°C); restart the unit. if the error persists, return to repair center.

What does C10 mean on FLA48500?

Battery cell under-temperature protection triggered. Cause: Cell temperature below lower limit. Fix: Restart the unit. if the error persists, contact the repair center.

FLA48500

Q: What does C03 mean on FLA48500?

Individual cell overvoltage protection triggered. Cause: One or more cells exceeded the per-cell upper voltage limit. Fix: Restart the unit. if the error persists, contact the repair center.

Q: What does C04 mean on FLA48500?

Individual cell undervoltage protection triggered. Cause: One or more cells dropped below the per-cell lower voltage limit. Fix: Restart the unit. if the error persists, contact the repair center.

Q: What does C05 mean on FLA48500?

Charging current exceeded the allowable limit. Cause: Charge current above recommended (≤200A continuous, 300A 15s peak). Fix: Restart the unit. if the error persists, contact the repair center.

Q: What does C06 mean on FLA48500?

Discharging current exceeded the allowable limit. Cause: Discharge current above recommended (≤200A continuous, 300A 15s peak). Fix: Restart the unit. if the error persists, contact the repair center.

Battery14 codes

14 Fault

About the Felicity FLA48500

The Felicity FLA48500 is a Battery unit. The 14 error codes listed below are the complete fault catalog for this device, compiled from the official Felicity user manual.

How to use this 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.

C01Battery overvoltage.Fault

Description

Battery overvoltage protection triggered (pack-level voltage exceeded threshold).

Cause

Battery pack voltage above operating limit (operating range 44.8-57.6V; max charging voltage 57.6V).

Recommended fix

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

Source:felicitysolar FLA48500 LiFePO4 Battery System for Households User Guide.pdf

C02Battery undervoltage.Fault

Description

Battery undervoltage protection triggered (pack-level voltage below threshold).

Cause

Battery pack voltage below cut-off (cut-off voltage 48V); over-discharge condition.

Recommended fix

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

Source:felicitysolar FLA48500 LiFePO4 Battery System for Households User Guide.pdf

C03Cell overvoltage.Fault

Description

Individual cell overvoltage protection triggered.

Cause

One or more cells exceeded the per-cell upper voltage limit.

Recommended fix

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

Source:felicitysolar FLA48500 LiFePO4 Battery System for Households User Guide.pdf

C04Cell undervoltage.Fault

Description

Individual cell undervoltage protection triggered.

Cause

One or more cells dropped below the per-cell lower voltage limit.

Recommended fix

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

Source:felicitysolar FLA48500 LiFePO4 Battery System for Households User Guide.pdf

C05Charge overcurrent.Fault

Description

Charging current exceeded the allowable limit.

Cause

Charge current above recommended (≤200A continuous, 300A 15s peak).

Recommended fix

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

Source:felicitysolar FLA48500 LiFePO4 Battery System for Households User Guide.pdf

C06Discharge overcurrent.Fault

Description

Discharging current exceeded the allowable limit.

Cause

Discharge current above recommended (≤200A continuous, 300A 15s peak).

Recommended fix

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

Source:felicitysolar FLA48500 LiFePO4 Battery System for Households User Guide.pdf

C07MOS overtemperature.Fault

Description

MOSFET (BMS power switch) over-temperature protection.

Cause

1. The inner temperature is over the limitation. 2. Check whether the ambient temperature is too high.

Recommended fix

Reduce ambient temperature / improve ventilation; restart the unit. if the error persists, return to repair center.

Source:felicitysolar FLA48500 LiFePO4 Battery System for Households User Guide.pdf

C08MOS undertemperature.Fault

Description

MOSFET (BMS power switch) under-temperature protection.

Cause

1. The internal temperature is lower than the limit range. 2. Check whether the ambient temperature is too low.

Recommended fix

Raise ambient temperature into operating range (charging 0-55°C; discharging -20-55°C); restart the unit. if the error persists, return to repair center.

Source:felicitysolar FLA48500 LiFePO4 Battery System for Households User Guide.pdf

C09Cell overtemperature.Fault

Description

Battery cell over-temperature protection triggered.

Cause

Cell temperature exceeded upper limit (charging temperature range 0-55°C, discharging -20-55°C).

Recommended fix

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

Source:felicitysolar FLA48500 LiFePO4 Battery System for Households User Guide.pdf

C10Cell undertemperature.Fault

Description

Battery cell under-temperature protection triggered.

Cause

Cell temperature below lower limit.

Recommended fix

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

Source:felicitysolar FLA48500 LiFePO4 Battery System for Households User Guide.pdf

C11Abnormal current sampling.Fault

Description

Internal current measurement / sampling circuit abnormal.

Cause

Hardware/sensor abnormality in current sampling path.

Recommended fix

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

Source:felicitysolar FLA48500 LiFePO4 Battery System for Households User Guide.pdf

C12Abnormal output impedance.Fault

Description

Output impedance abnormal.

Cause

Abnormal impedance detected on output (possible bad connection, contactor or wiring issue).

Recommended fix

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

Source:felicitysolar FLA48500 LiFePO4 Battery System for Households User Guide.pdf

C13Parallel failed.Fault

Description

Parallel connection / parallel-mode start-up failed.

Cause

Parallel condition not satisfied (e.g. pack-to-pack voltage difference ≥3V, or wiring issue between paralleled units).

Recommended fix

1. Please check if single unit is installed in parallel system. 2. if this error happens during parallel installation, please check wires connection. if they are connected correctly, please finish parallel installation first, and then Restart the unit. 3. if the problem remains, please contact your installer.

Source:felicitysolar FLA48500 LiFePO4 Battery System for Households User Guide.pdf

C14Output loss.Fault

Description

Output loss / no output detected.

Cause

Breaker open, blown fuse, or output path interrupted.

Recommended fix

1. Please check whether the circuit breaker is closed; 2. Please check whether the fuse is normal; 3. Restart the unit. if the error persists, contact the repair center.

Source:felicitysolar FLA48500 LiFePO4 Battery System for Households User Guide.pdf

Step-by-step troubleshooting checklist

1.Note the exact code and timing
Write 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.
2.Check the recommended fix on this page
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.
3.Verify the source manual page
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.
4.Disconnect AC, DC, and battery before opening
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.
5.Escalate critical codes to authorized service
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.

Common questions about FLA48500 error codes

Where can I find the official Felicity FLA48500 error code manual?: Each code on this page lists the official source manual filename and page number at the bottom. The manuals are published by Felicity on their website; we compile the codes here so you can search across all of them at once instead of opening each PDF.
Is the FLA48500 the same as other Felicity models?: Some Felicity units share firmware across a family of variants — the same fault codes apply to multiple model numbers. Look at the "also covers" chips below the title to see which other model numbers this page applies to.
What's the most critical code on a Felicity FLA48500?: Critical-severity codes (red dot) are the ones that trip the unit offline immediately — typically short-circuit, IGBT, or BMS hardware failures. These are listed first when you filter by severity. Do not bypass them; they indicate a hardware or safety condition that requires service.