About the Felicity FLA48200
The Felicity FLA48200 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.
FLA48200
Battery14 codes 12 Fault 2 Warning
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— high
Description
Total battery pack voltage exceeded the upper limit.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
Felicitysolar FLA48200 48V 200Ah 10kWh Lithium Phosphate Battery User Manual.pdf · page 12C02Battery undervoltage.Fault— high
Description
Total battery pack voltage dropped below the lower limit.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
Felicitysolar FLA48200 48V 200Ah 10kWh Lithium Phosphate Battery User Manual.pdf · page 12C03Cell overvoltage.Fault— high
Description
Individual cell voltage exceeded the upper limit.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
Felicitysolar FLA48200 48V 200Ah 10kWh Lithium Phosphate Battery User Manual.pdf · page 12C04Cell undervoltage.Fault— high
Description
Individual cell voltage dropped below the lower limit.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
Felicitysolar FLA48200 48V 200Ah 10kWh Lithium Phosphate Battery User Manual.pdf · page 12C05Charge overcurrent.Fault— high
Description
Charging current exceeded safe limits.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
Felicitysolar FLA48200 48V 200Ah 10kWh Lithium Phosphate Battery User Manual.pdf · page 12C06Discharge overcurrent.Fault— high
Description
Discharging current exceeded safe limits.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
Felicitysolar FLA48200 48V 200Ah 10kWh Lithium Phosphate Battery User Manual.pdf · page 12C07MOS overtemperature.Fault— high
Description
MOSFET temperature is too high.
Cause
1. The inner temperature is over the limitation. 2. Ambient temperature is too high.
Recommended fix
Check whether the ambient temperature is too high.
Source:
Felicitysolar FLA48200 48V 200Ah 10kWh Lithium Phosphate Battery User Manual.pdf · page 12C08MOS undertemperature.Fault— high
Description
MOSFET temperature is too low.
Cause
1. The internal temperature is lower than the limit range. 2. Ambient temperature is too low.
Recommended fix
Check whether the ambient temperature is too low.
Source:
Felicitysolar FLA48200 48V 200Ah 10kWh Lithium Phosphate Battery User Manual.pdf · page 12C09Cell overtemperature.Fault— high
Description
Cell temperature exceeded the upper limit.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
Felicitysolar FLA48200 48V 200Ah 10kWh Lithium Phosphate Battery User Manual.pdf · page 13C10Cell undertemperature.Fault— high
Description
Cell temperature dropped below the lower limit.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
Felicitysolar FLA48200 48V 200Ah 10kWh Lithium Phosphate Battery User Manual.pdf · page 13C11Abnormal current sampling.Warning— medium
Description
Current sampling/measurement circuit reported an abnormal reading.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
Felicitysolar FLA48200 48V 200Ah 10kWh Lithium Phosphate Battery User Manual.pdf · page 13C12Abnormal output impedance.Warning— medium
Description
Battery output impedance is abnormal.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
Felicitysolar FLA48200 48V 200Ah 10kWh Lithium Phosphate Battery User Manual.pdf · page 13C13Parallel failed.Fault— high
Description
Parallel installation failed; battery cannot establish parallel communication or balance with other packs.
Cause
Improper parallel installation or incorrect wire connections between the battery packs in parallel.
Recommended fix
1. Please check if single unit is installed to 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 FLA48200 48V 200Ah 10kWh Lithium Phosphate Battery User Manual.pdf · page 13C14Output loss.Fault— high
Description
Battery output is lost - no power being delivered to the load.
Cause
Circuit breaker open or fuse blown.
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 FLA48200 48V 200Ah 10kWh Lithium Phosphate Battery User Manual.pdf · page 13Step-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 FLA48200 error codes
- Where can I find the official Felicity FLA48200 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 FLA48200 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 FLA48200?
- 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.
Compiled from official Felicity user manuals. Always consult your device manual and a qualified technician before performing repairs.