FLS-ES232LC-S
Energy storage system140 codes0x10A1Cell voltage accumulation overvoltage alarm in battery cluster (level 1).Warning— level 1
Vsum > 3.65V × N (N = number of battery strings).
Send faults externally. Recovers when Vsum < 3.6V × N.
FLS-ES232LC-S.pdf0x10A2Cell voltage accumulation overvoltage alarm in battery cluster (level 2).Fault— level 2
Vsum > 3.7V × N.
Send faults externally and limit power. Recovers when Vsum < 3.65V × N.
FLS-ES232LC-S.pdf0x10A3Cell voltage accumulation overvoltage alarm in battery cluster (level 3).Critical— level 3
Vsum > 3.8V × N.
Send faults externally, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay. Recovers when Vsum < 3.7V × N.
FLS-ES232LC-S.pdf0x10B1Cell voltage accumulation undervoltage alarm in battery cluster (level 1).Warning— level 1
Vsum < 2.50V × N.
Send faults externally. Recovers when Vsum > 2.60V × N.
FLS-ES232LC-S.pdf0x10B2Cell voltage accumulation undervoltage alarm in battery cluster (level 2).Fault— level 2
Vsum < 2.40V × N.
Send faults externally and limit power. Recovers when Vsum > 2.50V × N.
FLS-ES232LC-S.pdf0x10B3Cell voltage accumulation undervoltage alarm in battery cluster (level 3).Critical— level 3
Vsum < 2.30V × N.
Send faults externally, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay. Recovers when Vsum > 2.40V × N.
FLS-ES232LC-S.pdf0x10C1Low insulation fault (level 1).Warning— level 1
Insulation resistance ≤ 1000 Ω/V.
Send faults to EMS. Recovers when > 1100 Ω/V.
FLS-ES232LC-S.pdf0x10C2Low insulation fault (level 2).Fault— level 2
Insulation resistance ≤ 500 Ω/V.
Send faults to EMS and limit power. Recovers when > 600 Ω/V.
FLS-ES232LC-S.pdf0x10C3Low insulation fault, single cabinet with no MBCU (level 3).Critical— level 3
Insulation resistance ≤ 100 Ω/V.
Send faults to EMS, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay.
FLS-ES232LC-S.pdf0x10D1Battery cluster excessive temperature difference alarm (level 1).Warning— level 1
Cell temperature spread > 8°C.
Send faults externally. Recovers when < 6°C.
FLS-ES232LC-S.pdf0x10D2Battery cluster excessive temperature difference alarm (level 2).Fault— level 2
Cell temperature spread > 13°C.
Send faults externally and limit power. Recovers when < 8°C.
FLS-ES232LC-S.pdf0x10D3Battery cluster excessive temperature difference alarm (level 3).Critical— level 3
Cell temperature spread > 15°C.
Send faults externally, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay. Recovers when < 13°C.
FLS-ES232LC-S.pdf0x10E1Battery cluster cell excessive voltage difference alarm (level 1).Warning— level 1
Cell voltage spread > 500 mV.
Send faults externally. Recovers when < 300 mV.
FLS-ES232LC-S.pdf0x10E2Battery cluster cell excessive voltage difference alarm (level 2).Fault— level 2
Cell voltage spread > 3600 mV.
Send faults externally and limit power. Recovers when < 500 mV.
FLS-ES232LC-S.pdf0x10E3Battery cluster cell excessive voltage difference alarm (level 3).Critical— level 3
Cell voltage spread > 4000 mV.
Send faults externally, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay. Recovers when < 3600 mV.
FLS-ES232LC-S.pdf0x10F1Low battery cluster SOC alarm.Warning— level 1
SOC < 3%.
Send faults externally. Recovers when SOC > 5% (threshold subject to actual operating conditions).
FLS-ES232LC-S.pdf0x20B1Battery cluster SBCU internal bus voltage sampling fault (after applying high voltage).Warning— level 1
Invalid internal bus voltage sampling.
Send faults externally, cluster disables insulation detection function. Recovers on normal sampling.
FLS-ES232LC-S.pdf0x20B3Battery cluster SBCU internal bus voltage sampling fault (before applying high voltage).Critical— level 3
Invalid internal bus voltage sampling.
Send faults externally, cluster disables insulation detection function with high voltage prohibited. Recovers on normal sampling.
FLS-ES232LC-S.pdf0x20C3Battery cluster SBCU external bus voltage sampling fault.Critical— level 3
Invalid external bus voltage sampling.
Send faults externally, limit power and request to lower high voltage; if command not received within 5s, cut off the main circuit relay.
FLS-ES232LC-S.pdf0x20D3Battery cluster SBCU insulation sampling circuit fault (before applying high voltage).Critical— level 3
Invalid insulation sampling partial voltage value.
Send faults externally, cluster disables insulation detection function with high voltage prohibited. Recovers on normal sampling.
FLS-ES232LC-S.pdf0x20E3Battery cluster high-voltage box current sampling module fault.Critical— level 3
Current sampling value reading fails.
Send faults externally, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay. Recovers on successful current sampling read.
FLS-ES232LC-S.pdf0x20F1SBCU-EE storage failure.Warning— level 1
Communication of EE fails while reading or writing.
Send faults externally. Recovers when EE communication succeeds.
FLS-ES232LC-S.pdf0x30B3Battery cluster high-voltage box NTC failure.Warning— level 1
SBCU detects BJB_NTC sampling value as invalid.
Send faults externally. Recovers when BJB_NTC sampling value valid.
FLS-ES232LC-S.pdf0x40F2Failure to disconnect the main positive circuit relay in the battery cluster high-voltage box.Critical— level 3
Sticking failure - main positive relay cannot open.
Send faults externally, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay.
FLS-ES232LC-S.pdf0x90A3PACK high-voltage connector overtemperature.Critical— level 3
Temp21 or Temp22 on any BMU as judged by SBCU: T > 90°C.
Send faults to EMS, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay. Latch - manual troubleshooting is required.
FLS-ES232LC-S.pdf0x1011Battery cluster cell overtemperature alarm (level 1).Warning— level 1
Cell maximum temperature > 50°C.
Send faults externally. Recovers when Temp_max < 45°C.
FLS-ES232LC-S.pdf0x1012Battery cluster cell overtemperature alarm (level 2).Fault— level 2
Cell maximum temperature > 55°C.
Send faults externally and limit power. Recovers when Temp_max < 50°C.
FLS-ES232LC-S.pdf0x1013Battery cluster cell overtemperature alarm (level 3).Critical— level 3
Cell maximum temperature > 60°C.
Send faults externally, limit power and request to lower high voltage; if command not received within 5s, cut off the main circuit relay. Recovers when Temp_max < 55°C.
FLS-ES232LC-S.pdf0x1021Battery cluster cell undertemperature alarm (level 1).Warning— level 1
Cell minimum temperature < 5°C.
Send faults externally. Recovers when Temp_min > 10°C.
FLS-ES232LC-S.pdf0x1022Battery cluster cell undertemperature alarm (level 2).Fault— level 2
Cell minimum temperature < 0°C.
Send faults externally and limit power. Recovers when Temp_min > 5°C.
FLS-ES232LC-S.pdf0x1023Battery cluster cell undertemperature alarm (level 3).Critical— level 3
Cell minimum temperature < -30°C.
Send faults externally, limit power and request to lower high voltage; if command not received within 5s, cut off the main circuit relay. Recovers when Temp_min > 0°C.
FLS-ES232LC-S.pdf0x1031Battery cluster cell overvoltage alarm (level 1).Warning— level 1
Cell voltage > 3,650 mV.
Send faults externally. Recovers when < 3,600 mV.
FLS-ES232LC-S.pdf0x1032Battery cluster cell overvoltage alarm (level 2).Fault— level 2
Cell voltage > 3,700 mV.
Send faults externally and limit power. Recovers when < 3,650 mV.
FLS-ES232LC-S.pdf0x1033Battery cluster cell overvoltage alarm (level 3).Critical— level 3
Cell voltage > 3,800 mV.
Send faults externally, limit power and request lower high voltage; immediately cut off the main circuit relay. Recovers when < 3,700 mV.
FLS-ES232LC-S.pdf0x1041Battery cluster cell undervoltage alarm (level 1).Warning— level 1
Cell voltage < 2,500 mV.
Send faults externally. Recovers when > 2,600 mV.
FLS-ES232LC-S.pdf0x1042Battery cluster cell undervoltage alarm (level 2).Fault— level 2
Cell voltage < 2,400 mV.
Send faults externally and limit power. Recovers when > 2,500 mV.
FLS-ES232LC-S.pdf0x1043Battery cluster cell undervoltage alarm (level 3).Critical— level 3
Cell voltage < 2,300 mV.
Send faults externally, limit power and request lower high voltage; immediately cut off the main circuit relay. Recovers when > 2,400 mV.
FLS-ES232LC-S.pdf0x1051Battery cluster charging current exceeding limit alarm (level 1).Warning— level 1
Charging current > 105% × allowable current.
Send faults externally. Recovers when < 100% allowable current.
FLS-ES232LC-S.pdf0x1052Battery cluster charging current exceeding limit alarm (level 2).Fault— level 2
Charging current > 110% × allowable current.
Send faults externally and limit power. Recovers when < 105% allowable current.
FLS-ES232LC-S.pdf0x1053Battery cluster charging current exceeding limit alarm (level 3).Critical— level 3
Charging current > 130% × allowable current.
Send faults externally, limit power and request lower high voltage; if command not received within 5s, cut off the main circuit relay.
FLS-ES232LC-S.pdf0x1061Battery cluster discharging current exceeding limit alarm (level 1).Warning— level 1
Discharging current > 105% × allowable current.
Send faults externally. Recovers when < 100% allowable current.
FLS-ES232LC-S.pdf0x1062Battery cluster discharging current exceeding limit alarm (level 2).Fault— level 2
Discharging current > 110% × allowable current.
Send faults externally and limit power. Recovers when < 105% allowable current.
FLS-ES232LC-S.pdf0x1063Battery cluster discharging current exceeding limit alarm (level 3).Critical— level 3
Discharging current > 130% × allowable current.
Send faults externally, limit power and request lower high voltage; if command not received within 5s, cut off the main circuit relay.
FLS-ES232LC-S.pdf0x1103Battery cluster voltage mismatch fault.Critical— level 3
|Slave plate voltage sum - internal bus voltage| > 40V.
Send faults externally, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay.
FLS-ES232LC-S.pdf0x1183Low battery cluster SOH alarm.Critical— level 3
SOH < 60%.
Send faults externally, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay. Latch - Administrator permissions are required to troubleshoot.
FLS-ES232LC-S.pdf0x2013Loss of communication between battery cluster SBCU and BMU.Critical— level 3
No signal received or life signal unchanged.
Send faults externally, limit power and request to lower high voltage; if command not received within 5s, cut off the main circuit relay. Recovers when life signal changed.
FLS-ES232LC-S.pdf0x2083Loss of communication between battery cluster SBCU and BMCU.Critical— level 3
No signal received or life signal unchanged.
Send faults externally, limit power and request to lower high voltage; if command not received within 5s, cut off the main circuit relay. Recovers when life signal changed.
FLS-ES232LC-S.pdf0x2133Fire system communication loss.Critical— level 3
No signal received or life signal unchanged from fire system.
Send faults to EMS, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay.
FLS-ES232LC-S.pdf0x2153Communication loss between SBCU and EMS (for liquid-cooled single cabinet).Critical— level 3
No signal received or life signal unchanged.
Send faults to EMS, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay.
FLS-ES232LC-S.pdf0x2163PCS communication loss.Critical— level 3
No signal received or life signal unchanged from PCS.
Send faults to EMS, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay.
FLS-ES232LC-S.pdf0x317333772 communication loss.Critical— level 3
Unsuccessful reboot of 33772 chip 10 times within 1s.
Send faults to EMS, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay. Recovers on communication recovered.
FLS-ES232LC-S.pdf0x4013Failure to connect the main positive circuit relay in the battery cluster high-voltage box.Critical— level 3
Open-circuit fault detected on main positive relay.
Send faults externally, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay.
FLS-ES232LC-S.pdf0x4143Battery cluster relay sticking detection circuit failure.Critical— level 3
After low voltage applied without enabling relay: DO4 input voltage not 20-32V or DI1/2 feedback state is 0; after enabling relay: DO4 input voltage not 20-32V or DI1/2 feedback state is 1.
Send faults externally, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay.
FLS-ES232LC-S.pdf0x5182Battery cluster SBCU wakeup loss.Critical— level 3
Anomalous high-voltage state (wakeup loss & EMS communication loss); cut-off with 5s delay and dormant. Trigger: < 9V.
Send faults externally. (1) Non-high-voltage state dormant; (2) Normal high-voltage state hold; (3) Anomalous high-voltage state cut-off. Recovers when ≥ 9V.
FLS-ES232LC-S.pdf0x5192Battery cluster system voltage mismatch fault.Critical— level 3
Actual voltage quantity does not match software configuration.
Send faults externally, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay. Detection starts 10s after Device powered on.
FLS-ES232LC-S.pdf0x8023Battery cluster thermal runaway alarm.Critical— level 3
Thermal runaway detected by any of: 1) Vmin<0.5V & Tmax>65°C; 2) Vmin<0.5V & Tmax-Tmin>30°C; 3) Vmin<0.5V & dT/dt>1°C/s; 4) Voltage sampling disconnection fault & Tmax>65°C; 5) Voltage sampling disconnection fault & Tmax-Tmin>30°C; 6) Voltage sampling disconnection fault & dT/dt>1°C/s; Vmin<0.5V & NTC sampling break or short circuit; Aerosol operation (AI1>9V on any BMU as judged by SBCU) & Tmax>65°C; Any BMU air pressure change rate ≥ 0.1 kPa/s.
Send faults externally, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay. Latch - manual troubleshooting is required.
FLS-ES232LC-S.pdf0x8051Aerosol operation alarm in battery pack.Critical— level 3
Aerosol operation (AI1 > 9V on any BMU as judged by SBCU).
Send faults externally, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay.
FLS-ES232LC-S.pdf0x9012Manual disconnect switch (QS) in the battery cluster high-voltage box is disconnected.Critical— level 3
QS feedback signal anomaly detected inside SBCU (judgment made only after receiving applying high voltage command).
Send faults externally, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay.
FLS-ES232LC-S.pdf0x9022Fuse (FU1) in the battery cluster high-voltage box is disconnected.Critical— level 3
FU1 feedback signal anomaly detected inside SBCU.
Send faults externally, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay.
FLS-ES232LC-S.pdf0x9052Excessive temperature in the high-voltage box of the battery cluster.Critical— level 3
SBCU detects BJB_NTC > 60°C.
Send faults externally, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay. Recovers when BJB_NTC < 50°C.
FLS-ES232LC-S.pdf0x9062Battery cluster SBCU relay drive supply voltage differences.Critical— level 3
Relay drive supply voltage < 22V.
Send faults externally, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay. Recovers at ≥ 22V.
FLS-ES232LC-S.pdfHVAC-COMP-NOSTARTCompressor does not start.Fault
Power off, loose circuit connection, or compressor damaged.
Check main power switch and operation display screen; tighten circuit connector; check compressor and replace if damaged.
FLS-ES232LC-S.pdfHVAC-COMP-NOWORKCompressor does not work.Fault
Water temperature set too high (no cooling required) or shutdown delay (compressor minimum shutdown time).
Check inlet/outlet temperature display and reset control temperature. The compressor will restart with delay if temperature rises again.
FLS-ES232LC-S.pdfHVAC-COOL-POORPoor cooling effect.Fault
Insufficient refrigerant; insufficient water flow; serious dust accumulation in condenser; refrigeration system clogged.
Replenish refrigerant; clean water filter and check water pump; clean condenser; check or replace filter drier.
FLS-ES232LC-S.pdfHVAC-FAN-NOISEAbnormal noise of fan.Fault
Worn fan bearings or fan blades scrape against other objects.
Replace the fan. Check whether any cables interfere with the fan blades.
FLS-ES232LC-S.pdfHVAC-FAN-NORUNFan does not run.Fault
Fan failure or fan stuck.
Check the motor and replace it immediately if defects are found. Check whether any foreign matters are stuck in the fan.
FLS-ES232LC-S.pdfHVAC-HEAT-NOWORKElectric heating tube does not work.Fault
Water temperature set too low (no heating required), loose circuit connection, or electric heating tube burnout.
Check outlet temperature and heating set point; tighten circuit connector; replace burnt-out heating tube.
FLS-ES232LC-S.pdfHVAC-HV-PROTHigh voltage protection fault.Fault
Condenser dirty plugging or external circulation fan does not operate.
Clean the condenser. Check the fan.
FLS-ES232LC-S.pdfHVAC-LV-PROTLow voltage protection fault.Fault
Leakage of fluorine or insufficient refrigerant; filter drier clogging; thermal expansion valve failure; water flow rate too low.
Leak check and replenish refrigerant; replace filter drier; check expansion valve and temperature sensing package; fix water system.
FLS-ES232LC-S.pdfHVAC-PUMP-FAILCirculating water pump does not start or operates improperly.Fault
Power off, loose circuit connection, damaged water pump, or air in cooling medium / no cooling medium.
Check main power switch; tighten circuit connector; replace damaged water pump; evacuate air or replenish cooling medium.
FLS-ES232LC-S.pdfPCS-ARM-01ARM software fault - phase A output overcurrent.Fault— level 2
Phase A output overcurrent.
Reset to restart. Manual intervention required if fault cannot be rectified. More than 3 faults in one day require manual intervention to confirm grid quality on site.
FLS-ES232LC-S.pdfPCS-ARM-02ARM software fault - phase A output quick disconnection.Fault— level 2
Phase A output quick disconnection.
Reset to restart. Manual intervention required if fault cannot be rectified.
FLS-ES232LC-S.pdfPCS-ARM-03ARM software fault - phase B output overcurrent.Fault— level 2
Phase B output overcurrent.
Reset to restart. Manual intervention required if fault cannot be rectified.
FLS-ES232LC-S.pdfPCS-ARM-04ARM software fault - phase B output quick disconnection.Fault— level 2
Phase B output quick disconnection.
Reset to restart. Manual intervention required if fault cannot be rectified.
FLS-ES232LC-S.pdfPCS-ARM-05ARM software fault - phase C output overcurrent.Fault— level 2
Phase C output overcurrent.
Reset to restart. Manual intervention required if fault cannot be rectified.
FLS-ES232LC-S.pdfPCS-ARM-06ARM software fault - phase C output quick disconnection.Fault— level 2
Phase C output quick disconnection.
Reset to restart. Manual intervention required if fault cannot be rectified.
FLS-ES232LC-S.pdfPCS-ARM-07ARM software fault - phase N output quick disconnection.Fault— level 2
Phase N output quick disconnection.
Reset to restart.
FLS-ES232LC-S.pdfPCS-ARM-08ARM software fault - phase N output quick disconnection (2).Fault— level 2
Phase N output quick disconnection (duplicate entry).
Reset to restart.
FLS-ES232LC-S.pdfPCS-ARM-09ARM software fault - AC overvoltage.Warning— level 1
AC bus overvoltage.
Reset to restart. When AC undervoltage cannot be recovered: 1) Check whether AC switch is disconnected or grid is blacked out; 2) Where there is no disconnection, confirm whether the AC insurance is blown.
FLS-ES232LC-S.pdfPCS-ARM-10ARM software fault - AC undervoltage.Warning— level 1
AC bus undervoltage.
Reset to restart. Check AC switch and AC fuse.
FLS-ES232LC-S.pdfPCS-ARM-11ARM software fault - output overvoltage.Warning— level 1
Output side overvoltage (off-grid).
Cannot reset to restart. Off-grid output AC overvoltage. Check whether the Device can work with no load.
FLS-ES232LC-S.pdfPCS-ARM-12ARM software fault - output undervoltage.Warning— level 1
Output side undervoltage (off-grid).
Reset to restart. Off-grid output AC undervoltage. Check whether the device is in an overload state.
FLS-ES232LC-S.pdfPCS-ARM-13ARM software fault - voltage THDU exceeds the limit.Warning— level 1
Voltage total harmonic distortion exceeds limit.
Reset to restart. Check whether THDU of the power grid exceeds 15%; confirm instantaneous power of load is within design range of system distribution.
FLS-ES232LC-S.pdfPCS-ARM-14ARM software fault - system phase loss.Warning— level 1
Loss of one or more grid phases.
PCS shall be automatically reset and restarted after the fault is rectified on the site. Check whether the wiring misses a phase.
FLS-ES232LC-S.pdfPCS-ARM-15ARM software fault - system phase sequence error.Warning— level 1
Phase sequence reversed/incorrect.
PCS shall be automatically reset and restarted after the fault is rectified on the site. Check correspondence between ABCN phase sequence and the modules.
FLS-ES232LC-S.pdfPCS-ARM-16ARM software fault - DC polarity reverse connection.Warning— level 1
DC terminals connected with reversed polarity.
PCS shall be automatically reset and restarted after the fault is rectified on the site. Check the voltage polarity of the PCS DC terminal.
FLS-ES232LC-S.pdfPCS-ARM-17ARM software fault - DC bus software overvoltage.Warning— level 1
DC bus overvoltage detected by software.
Reset to restart. Measure battery voltage of PCS DC terminal within allowable range; check contactor of high-voltage box, DC fuse, DC soft start. More than 3 faults in one day require manual intervention.
FLS-ES232LC-S.pdfPCS-ARM-18ARM software fault - DC busbar software undervoltage.Warning— level 1
DC busbar undervoltage detected by software.
Reset to restart. Measure battery voltage; check contactor and DC fuse. More than 3 faults in one day require manual intervention.
FLS-ES232LC-S.pdfPCS-ARM-19ARM software fault - system overfrequency.Fault— level 2
Grid frequency too high.
Reset to restart. Check whether grid frequency is beyond range of frequency protection action. Check for AC disconnection or islanding.
FLS-ES232LC-S.pdfPCS-ARM-20ARM software fault - system underfrequency.Fault— level 2
Grid frequency too low.
Reset to restart. Check whether grid frequency is beyond range of frequency protection action. Check for AC disconnection or islanding.
FLS-ES232LC-S.pdfPCS-ARM-21ARM software fault - DC charging overcurrent.Fault— level 2
DC charging current exceeded threshold.
Reset to restart. Check system power settings do not exceed rated capacity; check actual battery voltage range. More than 3 faults in one day require manual intervention.
FLS-ES232LC-S.pdfPCS-ARM-22ARM software fault - DC discharging overcurrent.Fault— level 2
DC discharging current exceeded threshold.
Reset to restart. Check system power settings do not exceed rated capacity; check actual battery voltage range. More than 3 faults in one day require manual intervention.
FLS-ES232LC-S.pdfPCS-ARM-23ARM software fault - islanding protection.Fault— level 2
Islanding condition detected.
Reset to restart. Where an islanding is detected, the device is shut down from the on-grid state.
FLS-ES232LC-S.pdfPCS-ARM-24ARM software fault - DC component exceedance.Warning— level 1
DC component exceeds limit.
Reset to restart. 1) Report fault to manufacturer. 2) Contact manufacturer if it occurs 2 times in one day.
FLS-ES232LC-S.pdfPCS-ARM-25ARM software fault - AC main connection switching-on failure.Fault— level 2
AC main contactor failed to close.
Reset to restart. Does not occur on domestic version. if foreign version reports during startup three consecutive times, contact manufacturer to confirm insulation detection logic and contactor sticking.
FLS-ES232LC-S.pdfPCS-ARM-26ARM software fault - AC main connection switching-off failure.Fault— level 2
AC main contactor failed to open.
No alarm is generated for the current device.
FLS-ES232LC-S.pdfPCS-ARM-27ARM software fault - AC soft start switching-on failure.Fault— level 2
AC soft start failed to close.
No alarm is generated for the current device.
FLS-ES232LC-S.pdfPCS-ARM-28ARM software fault - AC soft start switching-off failure.Fault— level 2
AC soft start failed to open.
No alarm is generated for the current device.
FLS-ES232LC-S.pdfPCS-ARM-29ARM software fault - DC main connection switching-on failure.Fault— level 2
DC main contactor failed to close.
Reset to restart. Does not occur on device adopting 'One Cluster, One Management' approach.
FLS-ES232LC-S.pdfPCS-ARM-30ARM software fault - DC main connection switching-off failure.Fault— level 2
DC main contactor failed to open.
Reset to restart. Does not occur on device adopting 'One Cluster, One Management' approach.
FLS-ES232LC-S.pdfPCS-ARM-31ARM software fault - DC soft start switching-on failure.Warning— level 1
DC soft start failed to close.
Cannot reset to restart, manual confirmation required. 1) Check DC voltage sampling and calibration deviation. 2) Check whether DC soft start resistance is damaged.
FLS-ES232LC-S.pdfPCS-ARM-32ARM software fault - DC soft start switching-off failure.Fault
DC soft start failed to open.
No alarm is generated for the current device.
FLS-ES232LC-S.pdfPCS-ARM-33ARM software fault - ferroelectric parameter storage error.Warning— level 1
Ferroelectric memory parameter storage error.
Cannot reset to restart. Where PCS internal memory is faulty, contact the manufacturer.
FLS-ES232LC-S.pdfPCS-ARM-34ARM software fault - DC soft start failure.Warning— level 1
DC soft start failure (general).
Reset to restart. Report to manufacturer if it occurs three consecutive times during startup. 1) DC contactor switching-on under judgment, DC voltage difference too large. 2) When running with DCDC, DCDC startup not correct.
FLS-ES232LC-S.pdfPCS-ARM-35ARM software fault - reserved.Fault
No alarm is generated for the current device.
FLS-ES232LC-S.pdfPCS-ARM-36ARM software fault - reserved.Fault
No alarm is generated for the current device.
FLS-ES232LC-S.pdfPCS-ARM-37ARM software fault - start-up conditions are not met.Fault— level 2
Start-up preconditions failed.
Reset to restart. Check whether off-grid and on-grid setting matches actual wiring; after disconnecting from grid with no load, wait for AC terminal voltage to drop to near 0 before starting again.
FLS-ES232LC-S.pdfPCS-ARM-38ARM software fault - switch fault in operation.Fault— level 2
Switch fault during operation.
No alarm is generated for the current device.
FLS-ES232LC-S.pdfPCS-ARM-39ARM software fault - inverter startup timeout.Fault— level 2
Inverter did not start within timeout.
Reset to restart.
FLS-ES232LC-S.pdfPCS-ARM-40ARM software fault - parameter delivery setting error.Fault— level 2
Parameter setting error.
Reset to restart.
FLS-ES232LC-S.pdfPCS-ARM-41ARM software fault - BMS communication failure.Fault— level 2
Communication with BMS lost.
Reset to restart. Automatic reset after communication is restored.
FLS-ES232LC-S.pdfPCS-ARM-42ARM software fault - abnormal BMS temperature.Fault— level 2
BMS reported abnormal temperature.
No alarm is generated for the current device.
FLS-ES232LC-S.pdfPCS-ARM-43ARM software fault - BMS abort.Warning— level 1
BMS abort signal received.
Reset to restart.
FLS-ES232LC-S.pdfPCS-ARM-44ARM software fault - BMS battery alarm.Critical— level 3
BMS battery alarm received.
Alarm only, the device does not stop.
FLS-ES232LC-S.pdfPCS-ARM-45ARM software fault - DCDC communication failure.Fault— level 2
Communication with DCDC lost.
PCS and DCDC communication timeout.
FLS-ES232LC-S.pdfPCS-ARM-46ARM software fault - EMS communication failure.Warning— level 1
Communication with EMS lost.
Reset to restart.
FLS-ES232LC-S.pdfPCS-ARM-47ARM software fault - emergency stop or core failure.Warning— level 1
External emergency stop signal or internal core failure.
Reset to restart, external dry node signal shall disappear.
FLS-ES232LC-S.pdfPCS-ARM-48ARM software fault - reserved.Fault
FLS-ES232LC-S.pdfPCS-ARM-49ARM software fault - reserved.Fault
FLS-ES232LC-S.pdfPCS-ARM-50ARM software fault - battery software overvoltage.Warning— level 1
Battery overvoltage detected by software.
Reset to restart. Measure battery voltage; check contactor of high-voltage box, DC fuse. More than 3 faults in one day require manual intervention.
FLS-ES232LC-S.pdfPCS-ARM-51ARM software fault - battery software undervoltage.Warning— level 1
Battery undervoltage detected by software.
Reset to restart. Measure battery voltage; check contactor of high-voltage box, DC fuse. More than 3 faults in one day require manual intervention.
FLS-ES232LC-S.pdfPCS-ARM-52ARM software fault - abnormal busbar imbalance.Warning— level 1
Bus imbalance detected.
Reset to restart. 1) Fault elimination lasts about 1h after DC cut off. 2) if cannot be reset, contact manufacturer for voltage sampling and capacitor aging issues. 3) if reset works but repeatedly reports after startup, contact manufacturer.
FLS-ES232LC-S.pdfPCS-ARM-53ARM software fault - busbar semi-direct voltage overvoltage.Warning— level 1
Half-bus voltage overvoltage.
Reset to restart. Measure battery voltage; check contactor and DC fuse. More than 3 faults in one day require manual intervention.
FLS-ES232LC-S.pdfPCS-ARM-54ARM software fault - DCDC startup timeout.Fault— level 2
DCDC did not start within timeout.
Reset to restart. Check communication cables between PCS and DCDC and the baud rate.
FLS-ES232LC-S.pdfPCS-FPGA-01FPGA hardware fault - phase A hardware overcurrent.Fault— level 2
Phase A hardware overcurrent detected by FPGA.
Reset to restart. More than 3 faults in one day require manual intervention to confirm the grid quality on site.
FLS-ES232LC-S.pdfPCS-FPGA-02FPGA hardware fault - phase B hardware overcurrent.Fault— level 2
Phase B hardware overcurrent detected by FPGA.
Reset to restart. More than 3 faults in one day require manual intervention to confirm the grid quality on site.
FLS-ES232LC-S.pdfPCS-FPGA-03FPGA hardware fault - phase C hardware overcurrent.Fault— level 2
Phase C hardware overcurrent detected by FPGA.
Reset to restart. More than 3 faults in one day require manual intervention to confirm the grid quality on site.
FLS-ES232LC-S.pdfPCS-FPGA-04FPGA hardware fault - phase N hardware overcurrent.Fault— level 2
Phase N hardware overcurrent detected by FPGA.
Reset to restart. More than 3 faults in one day require manual intervention to confirm the grid quality on site.
FLS-ES232LC-S.pdfPCS-FPGA-05FPGA hardware fault - reserved.Fault
FLS-ES232LC-S.pdfPCS-FPGA-06FPGA hardware fault - reserved.Fault
FLS-ES232LC-S.pdfPCS-FPGA-07FPGA hardware fault - unit direct voltage fault.Warning— level 1
Unit DC voltage abnormal.
Reset to restart. Check whether the contactor of the high-voltage box has been disconnected. if the device fails to start after reset, manual intervention is required to check whether the DC fuse is blown.
FLS-ES232LC-S.pdfPCS-FPGA-08FPGA hardware fault - reserved.Fault
FLS-ES232LC-S.pdfPCS-FPGA-09FPGA hardware fault - reserved.Fault
FLS-ES232LC-S.pdfPCS-FPGA-10FPGA hardware fault - switching power supply undervoltage.Warning— level 1
Switching power supply undervoltage.
Reset to restart. Check whether the contactor of the high-voltage box has been disconnected.
FLS-ES232LC-S.pdfPCS-FPGA-11FPGA software fault - phase A IGBT failure.Fault
Phase A IGBT failure.
No alarm is generated for the current device.
FLS-ES232LC-S.pdfPCS-FPGA-12FPGA hardware fault - phase B IGBT failure.Fault
Phase B IGBT failure.
No alarm is generated for the current device.
FLS-ES232LC-S.pdfPCS-FPGA-13FPGA hardware fault - phase C IGBT failure.Fault
Phase C IGBT failure.
No alarm is generated for the current device.
FLS-ES232LC-S.pdfPCS-FPGA-14FPGA hardware fault - phase N IGBT failure.Fault
Phase N IGBT failure.
FLS-ES232LC-S.pdfPCS-FPGA-15FPGA hardware fault - overtemperature failure.Warning— level 1
Internal overtemperature.
Reset to restart. if over-temperature persists, consider derating depending on ambient temperature: derate 6kW per degree for ambient temperature over 45 degrees. Check fan operation, over-temperature protection threshold, and whether the container is exposed to sunlight without shade.
FLS-ES232LC-S.pdfPCS-FPGA-16FPGA hardware fault - reserved.Fault
FLS-ES232LC-S.pdfCompiled from official FelicityESS user manuals. Always consult your device manual and a qualified technician before performing repairs.