FLB48314TG1
Battery26 codesC05Charging Overcurrent Protection.Fault
Charging current reached the trigger value and lasted for 15 seconds. Battery enters fault mode, disabling both charging input and discharging output.
Felicity-FLB48314TG1-Manual.pdfC06Discharging Overcurrent Protection.Fault
Discharging current reached the trigger value and lasted for 15 seconds. Battery enters fault mode, disabling both charging input and discharging output.
Felicity-FLB48314TG1-Manual.pdfCASE-OVERHEATBattery Pack Case Overheating (Abnormal).Warning
Surface temperature of case rises abnormally (exceeding normal heat range), accompanied by unusual noises or smells. Note: Some case warmth during normal operation is expected due to MOSFET heat dissipation through the case.
Stop using the battery pack immediately and contact professional technicians for inspection and maintenance. Do not attempt to disassemble or handle yourself. Ensure proper ventilation around the case during use.
Felicity-FLB48314TG1-Manual.pdfCHG-INCOMPLETEBattery Does Not Fully Charge.Warning
Charging voltage set on the inverter is too low.
Set charging voltage on inverter according to recommended value in battery manual (Max. Charging Voltage: 57.6V; Floating Charging Voltage: 57.6V).
Felicity-FLB48314TG1-Manual.pdfCHG-NOT-PROGRESSINGBattery Indicates Charging But SOC Does Not Change.Warning
Ambient temperature is too low, preventing the battery from charging.
Charge the battery within the temperature range specified in the manual (Charging temperature: 0 C to +55 C).
Felicity-FLB48314TG1-Manual.pdfCOMM-FAULTUnable to Communicate with Inverter.Fault
Wrong communication cable used, or battery DIP switch settings are incorrect.
Before connecting battery to inverter, set battery DIP switches correctly per the DIP switch table. After setting DIP switches, restart the battery to activate the DIP, then use correct communication cable.
Felicity-FLB48314TG1-Manual.pdfFUSE-BLOWNFuse Blown (Overcurrent).Fault
Battery experienced overcurrent causing the external fuse to blow.
Step 1: Use Phillips-head screwdriver to remove screws from fuse cover. Step 2: Open fuse cover, remove old fuse, replace with the new one (spare fuse provided). Step 3: Reattach fuse cover and secure. Non-professionals are not allowed to open this cover.
Felicity-FLB48314TG1-Manual.pdfGreen LED Flash, Red LED OFF, all SOC LEDs OFFLow Power.Warning
Battery in low power state. Charge battery as soon as possible. Recharge within 18 hours after full discharge or over-discharge protection triggered.
Felicity-FLB48314TG1-Manual.pdfLED1 Flash (Power/Running Green LED ON, Red LED OFF)Low SOC Warning.Warning
State of Charge below 10% (default threshold). LED1 flashes during Stand By, Normal, or Discharge modes.
Felicity-FLB48314TG1-Manual.pdfLED1=OFF, LED2=OFF, LED3=OFF, LED4=ONBMS Temperature Low.Fault
Battery Management System (BMS) temperature fell below the lower protection threshold.
Felicity-FLB48314TG1-Manual.pdfLED1=OFF, LED2=OFF, LED3=ON, LED4=OFFCell Voltage Low.Fault
Voltage of any battery cell fell below the rated protection value during discharging. Over-discharging protection activated.
Felicity-FLB48314TG1-Manual.pdfLED1=OFF, LED2=ON, LED3=OFF, LED4=OFFBattery Voltage Low.Fault
Total battery pack voltage fell below the rated/protection value. Over-discharge protection activated; system stops supplying power externally.
Felicity-FLB48314TG1-Manual.pdfLED1=OFF, LED2=ON, LED3=OFF, LED4=ONCell Temperature Low.Fault
Battery cell temperature fell below lower protection threshold. Cell cannot be charged below 0 C.
Felicity-FLB48314TG1-Manual.pdfLED1=OFF, LED2=ON, LED3=ON, LED4=OFFDischarging Current High.Fault
Discharging current exceeded protection threshold. See also fault code C06 for discharging overcurrent (15-second trigger).
Felicity-FLB48314TG1-Manual.pdfLED1=ON, LED2=OFF, LED3=OFF, LED4=OFFBattery Voltage High.Fault
Total battery pack voltage exceeded the rated/protection value. Indicated by red Power/Running Status LED with LED1 ON only.
Felicity-FLB48314TG1-Manual.pdfLED1=ON, LED2=OFF, LED3=OFF, LED4=ONCell Temperature High.Fault
Battery cell temperature exceeded upper protection threshold (operating range Charge: 0 to +55 C; Discharge: -20 to +55 C).
Felicity-FLB48314TG1-Manual.pdfLED1=ON, LED2=OFF, LED3=ON, LED4=OFFCharging Current High.Fault
Charging current exceeded protection threshold. See also fault code C05 for charging overcurrent (15-second trigger).
Felicity-FLB48314TG1-Manual.pdfLED1=ON, LED2=ON, LED3=OFF, LED4=OFFCell Voltage High.Fault
Voltage of any single cell reached the over-voltage protection value during charging. Charging stopped until cells return to rated range.
Felicity-FLB48314TG1-Manual.pdfLED1=ON, LED2=ON, LED3=OFF, LED4=ONCurrent Sensor Abnormal.Fault
Internal current sensor reading abnormal/out of expected range. Indicates BMS sensor fault.
Felicity-FLB48314TG1-Manual.pdfLED1=ON, LED2=ON, LED3=ON, LED4=OFFBMS Temperature High.Fault
Battery Management System (BMS) temperature exceeded the upper protection threshold. May relate to MOSFET heat dissipation through the case.
Felicity-FLB48314TG1-Manual.pdfOUTPUT-CUTOFF-CURRENTHigh Current Charging/Discharging Causes Output Cutoff.Fault
Charging and discharging current set on the inverter is too high.
Set charging and discharging current on inverter according to recommended values in battery manual (Recommend Charge/Discharge Current: 80A; Max continuous: 160A).
Felicity-FLB48314TG1-Manual.pdfOUTPUT-INTERRUPTBattery Output Interrupted Due to High Current.Fault
Charging and discharging current settings on the inverter are too high during charging and discharging operations.
Set charging and discharging current on inverter according to recommendations in battery manual.
Felicity-FLB48314TG1-Manual.pdfOVP-CHGOver Voltage Protection in Charging.Fault— protection
During charging, total voltage of battery pack is higher than rated value or voltage of any single cell reaches protection value. System stops charging.
Protection automatically clears when total voltage or all cells return to rated range.
Felicity-FLB48314TG1-Manual.pdfPARALLEL-DATA-MISSINGParallel Battery Data Missing or Incorrect.Fault
When multiple batteries are connected in parallel, parallel connection of the batteries is not set up correctly.
1) Check the communication cables between the batteries. 2) Check whether the battery DIP switches are set in the correct sequence.
Felicity-FLB48314TG1-Manual.pdfSOC-INACCURATEInaccurate SOC Display.Warning
Battery SOC has not been calibrated.
SOC will automatically calibrate after one full charge cycle. Discharge battery to 0%, then charge to 100%. Battery should be fully charged at least once a month.
Felicity-FLB48314TG1-Manual.pdfUVP-DCHGLow Voltage / Over-Discharge Protection in Discharging.Fault— protection
Voltage of any battery cell or total voltage falls below rated protection value during discharging. Over-discharging protection activated; battery stops supplying power externally.
Protection released once voltage of each cell returns to rated range. Recharge within 18 hours.
Felicity-FLB48314TG1-Manual.pdfCompiled from official FelicityESS user manuals. Always consult your device manual and a qualified technician before performing repairs.