Felicity LPBA48100-OL Error Codes: Causes & Fixes (38 codes)

Listed under 7.1 Battery System Features 'Battery Protection': protects the cells/pack against an internal short-circuit fault.

CauseThe BMS has detected a short circuit inside the battery pack — on a cell or the internal power path — and tripped the internal short-circuit protection to stop current flow.

Source:felicity-5.1-kwh-user-manual.pdf· page 4

Listed under 7.1 Battery System Features as part of the inverter-interface protection set: protects against external short circuits on the inverter/output side.

CauseA short circuit on the inverter/output side — in the DC cabling or the connected equipment — pulled a fault-level current, tripping the external short-circuit protection.

Source:felicity-5.1-kwh-user-manual.pdf· page 4

Per 10.2 Troubleshooting: 'Battery system cannot work, when DC switch on and POWER on, the LED doesn't light up or flash, please consider contact the local distributor.'.

CauseThe battery's control electronics are not starting even with the DC switch and power button on — either the pack is so deeply discharged it can no longer activate, or an internal failure is preventing startup.

Source:felicity-5.1-kwh-user-manual.pdf· page 11

Fault mode indicated by red FAULT LED ON, green LED OFF, and SOC LED pattern LED1=OFF, LED2=OFF, LED3=OFF, LED4=ON.

CauseBattery voltage has fallen below the configured low-voltage cutoff. Causes: deep discharge during a long outage, undersized battery for the load, failing cells, or incorrect battery type setting.

Source:Felicitysolar LPBA48100-OL Felicity Storage Battery User Manual.pdf· page 10

Fault mode indicated by red FAULT LED ON, green LED OFF, and SOC LED pattern LED1=OFF, LED2=OFF, LED3=ON, LED4=ON.

CauseOne or more cells have fallen below the under-voltage protection limit — deep discharge, or a weak, aged cell sagging below the threshold under load.

Source:Felicitysolar LPBA48100-OL Felicity Storage Battery User Manual.pdf· page 10

Fault mode indicated by red FAULT LED ON, green LED OFF, and SOC LED pattern LED1=OFF, LED2=ON, LED3=ON, LED4=OFF.

CauseThe load or inverter is drawing more current than the pack's discharge protection limit, or a short circuit is present on the output side.

Source:Felicitysolar LPBA48100-OL Felicity Storage Battery User Manual.pdf· page 10

Fault mode indicated by red FAULT LED ON, green LED OFF, and SOC LED pattern LED1=ON, LED2=OFF, LED3=OFF, LED4=OFF.

CauseBattery voltage has exceeded the configured high-voltage cutoff. Usually a misconfigured charge profile, a runaway charger, or a fault in the battery management system.

Source:Felicitysolar LPBA48100-OL Felicity Storage Battery User Manual.pdf· page 10

Fault mode indicated by red FAULT LED ON, green LED OFF, and SOC LED pattern LED1=ON, LED2=OFF, LED3=OFF, LED4=ON.

CauseThe BMS current-sampling circuit is returning an abnormal reading — an internal sensor fault rather than a problem with the cells or external wiring.

Source:Felicitysolar LPBA48100-OL Felicity Storage Battery User Manual.pdf· page 10

Fault mode indicated by red FAULT LED ON, green LED OFF, and SOC LED pattern LED1=ON, LED2=OFF, LED3=ON, LED4=OFF.

CauseThe inverter or charger is requesting more charge current than the pack's protection limit — its charge-current setting is above the battery's rating.

Source:Felicitysolar LPBA48100-OL Felicity Storage Battery User Manual.pdf· page 10

Fault mode indicated by red FAULT LED ON, green LED OFF, and SOC LED pattern LED1=ON, LED2=OFF, LED3=ON, LED4=ON.

CauseA cell temperature reading has exceeded the protection threshold — high ambient temperature, poor ventilation, or sustained heavy charge/discharge current.

Source:Felicitysolar LPBA48100-OL Felicity Storage Battery User Manual.pdf· page 10

Fault mode indicated by red FAULT LED ON, green LED OFF, and SOC LED pattern LED1=ON, LED2=ON, LED3=OFF, LED4=OFF.

CauseOne or more cells have risen above the over-voltage protection limit — a charge voltage set too high on the inverter, or cell imbalance letting one cell run ahead of the rest.

Source:Felicitysolar LPBA48100-OL Felicity Storage Battery User Manual.pdf· page 10

Fault mode indicated by red FAULT LED ON, green LED OFF, and SOC LED pattern LED1=ON, LED2=ON, LED3=ON, LED4=OFF.

CauseThe BMS internal temperature has exceeded its limit — hot surroundings, restricted airflow around the case, or sustained current near the pack's maximum.

Source:Felicitysolar LPBA48100-OL Felicity Storage Battery User Manual.pdf· page 10

FAULT mode: Green LED OFF, Red LED ON. LED1 ON, LED2 ON, LED3 ON, LED4 OFF. Indicates the BMS internal temperature is above the protection threshold.

CauseThe BMS internal temperature is above its protection limit — the ambient is too hot, airflow around the case is restricted, or the pack has been running sustained current near its maximum.

Source:felicity-5.1-kwh-user-manual.pdf· page 10

FAULT mode: Green LED OFF, Red LED ON. LED1 OFF, LED2 OFF, LED3 OFF, LED4 ON (low-temp pattern per 8.9 table). Indicates the BMS internal temperature is below the protection threshold.

CauseThe BMS internal temperature has dropped below its operating range — the battery is sited in surroundings colder than its rated environment.

Source:felicity-5.1-kwh-user-manual.pdf· page 10

FAULT mode: Green LED OFF, Red LED ON. LED1 ON, LED2 OFF, LED3 OFF, LED4 OFF. Indicates total battery (pack) voltage above the protection threshold.

CauseBattery voltage has exceeded the configured high-voltage cutoff. Usually a misconfigured charge profile, a runaway charger, or a fault in the battery management system.

Source:felicity-5.1-kwh-user-manual.pdf· page 10

FAULT mode: Green LED OFF, Red LED ON. LED1 OFF, LED2 OFF, LED3 OFF, LED4 ON. Indicates total battery (pack) voltage below the protection threshold.

CauseBattery voltage has fallen below the configured low-voltage cutoff. Causes: deep discharge during a long outage, undersized battery for the load, failing cells, or incorrect battery type setting.

Source:felicity-5.1-kwh-user-manual.pdf· page 10

FAULT mode: Green LED OFF, Red LED ON. LED1 ON, LED2 OFF, LED3 ON, LED4 OFF. Indicates charge current above the protection threshold (max 50A per spec).

CauseCharge current is above the pack's protection limit — the charger or inverter is set to deliver more current than the battery's rating.

Source:felicity-5.1-kwh-user-manual.pdf· page 10

FAULT mode: Green LED OFF, Red LED ON. LED1 ON, LED2 OFF, LED3 OFF, LED4 ON. Indicates the current sensor signal is abnormal (sensor fault).

CauseThe current sensor inside the BMS is reporting an abnormal reading — a faulty current-sampling circuit, not a problem with the cells themselves.

Source:felicity-5.1-kwh-user-manual.pdf· page 10

FAULT mode: Green LED OFF, Red LED ON. LED1 OFF, LED2 OFF, LED3 ON, LED4 ON. Indicates a cell temperature above the protection threshold (working range -10 to +50 C per spec).

CauseA cell temperature has risen above the protection threshold — hot ambient conditions, poor ventilation, or prolonged heavy charge/discharge current.

Source:felicity-5.1-kwh-user-manual.pdf· page 10

FAULT mode: Green LED OFF, Red LED ON. LED1 OFF, LED2 ON, LED3 OFF, LED4 ON. Indicates a cell temperature below the protection threshold (working range -10 to +50 C per spec).

CauseA cell temperature is below the safe operating limit — the battery is too cold, and the protection holds until the pack warms back into range.

Source:felicity-5.1-kwh-user-manual.pdf· page 10

FAULT mode: Green LED OFF, Red LED ON. LED1 ON, LED2 ON, LED3 OFF, LED4 OFF. Indicates an individual cell over-voltage condition.

CauseAn individual cell has exceeded the over-voltage protection limit — usually a charger/inverter charge voltage set too high, or cell imbalance within the pack.

Source:felicity-5.1-kwh-user-manual.pdf· page 10

FAULT mode: Green LED OFF, Red LED ON. LED1 OFF, LED2 OFF, LED3 ON, LED4 OFF. Indicates an individual cell under-voltage condition.

CauseAn individual cell has dropped below the under-voltage protection limit — the pack was discharged too deeply, or a weak, aged cell is pulling low under load.

Source:felicity-5.1-kwh-user-manual.pdf· page 10

FAULT mode: Green LED OFF, Red LED ON. LED1 OFF, LED2 ON, LED3 ON, LED4 OFF. Indicates discharge current above the protection threshold (max 50A per spec).

CauseDischarge current is above the pack's protection limit — the connected load or inverter is drawing more than the battery's rating, or there is a short circuit on the output.

Source:felicity-5.1-kwh-user-manual.pdf· page 10

Listed under 7.1 Battery System Features 'Battery Protection': protects against over-current at the battery side (max charge/discharge current 50A per spec).

CauseCharge or discharge current at the battery terminals exceeded the pack's protection limit (50 A maximum per spec) — a load surge, or an inverter charge/discharge setting above the battery's rating.

Source:felicity-5.1-kwh-user-manual.pdf· page 4

Listed under 7.1 Battery System Features 'Battery Protection': protects against over-temperature at the battery side (working temp -10 to +50 C per spec).

CauseInverter internal temperature has exceeded the safe operating threshold. Causes include high ambient temperature, blocked cooling vents, failed cooling fan, or installation in direct sunlight.

Source:felicity-5.1-kwh-user-manual.pdf· page 4

Listed under 7.1 Battery System Features 'Battery Protection': protects against over-voltage at the battery side (max charge voltage 57.6 V per spec).

CauseBattery voltage rose above the over-voltage protection value — the charger or inverter is applying more than the pack's 57.6 V maximum charge voltage, or failed to taper off at the end of charge.

Source:felicity-5.1-kwh-user-manual.pdf· page 4

Listed under 7.1 Battery System Features 'Battery Protection': protects against under-voltage at the battery side (min discharge voltage 48 V per spec).

CauseBattery voltage fell below the under-voltage protection value (48 V minimum discharge voltage per spec) — the pack was discharged too deeply before the protection stepped in.

Source:felicity-5.1-kwh-user-manual.pdf· page 4

Listed under 7.1 Battery System Features as part of the inverter-interface protection set: detects/protects against ground faults at the battery-inverter interface.

CauseLeakage current to ground was detected at the battery-inverter interface — damaged cable insulation or a wiring fault allowing current to flow to earth.

Source:felicity-5.1-kwh-user-manual.pdf· page 4

Listed under 7.1 Battery System Features as part of the inverter-interface protection set: limits/protects against in-rush current at switch-on or fault transients.

CauseA high inrush of current at connection or switch-on — typically the inverter's DC-bus capacitors charging from the battery — exceeded the in-rush protection limit.

Source:felicity-5.1-kwh-user-manual.pdf· page 4

Listed under 7.1 Battery System Features as part of the inverter-interface protection set: protects the battery's inverter interface against over-current conditions.

CauseCurrent through the battery's inverter interface exceeded the over-current protection limit — the inverter is drawing or feeding more current than the pack is rated for.

Source:felicity-5.1-kwh-user-manual.pdf· page 4

Listed under 7.1 Battery System Features as part of the inverter-interface protection set: protects against over-temperature conditions at the inverter interface.

CauseInverter internal temperature has exceeded the safe operating threshold. Causes include high ambient temperature, blocked cooling vents, failed cooling fan, or installation in direct sunlight.

Source:felicity-5.1-kwh-user-manual.pdf· page 4

Listed under 7.1 Battery System Features as part of the inverter-interface protection set: protects the battery's inverter interface against over-voltage conditions from the inverter side.

CauseVoltage applied at the battery's inverter interface exceeded the over-voltage protection limit — the inverter's charge-voltage setting is too high for this pack.

Source:felicity-5.1-kwh-user-manual.pdf· page 4

Listed under 7.1 Battery System Features as part of the inverter-interface protection set: protects against reverse polarity connection of the inverter cables.

CauseThe inverter cables were connected with positive and negative swapped; reverse-polarity protection blocked the connection to prevent damage to the BMS and cells.

Source:felicity-5.1-kwh-user-manual.pdf· page 4

Fault mode indicated by red FAULT LED ON, green LED OFF, and SOC LED pattern LED1=OFF, LED2=ON, LED3=ON, LED4=ON.

CauseThe BMS internal temperature is below its operating range — the battery is installed or operating somewhere colder than its rated environment.

Source:Felicitysolar LPBA48100-OL Felicity Storage Battery User Manual.pdf· page 10

Fault mode indicated by red FAULT LED ON, green LED OFF, and SOC LED pattern LED1=ON, LED2=ON, LED3=ON, LED4=ON.

CauseA cell temperature reading is below the operating range — the pack is too cold for safe charging or discharging until it warms up.

Source:Felicitysolar LPBA48100-OL Felicity Storage Battery User Manual.pdf· page 10

LOW POWER mode: Green LED FLASH, Red LED OFF. SOC LED indicators show 'Running' pattern. Battery has reached low-power state.

CauseState of charge is critically low and the battery has entered its low-power state to protect the cells; output is held back until it is recharged.

Source:felicity-5.1-kwh-user-manual.pdf· page 10

SOC LED indication: when state of charge falls below 10%, LED1 flashes. Also annotated as default behaviour in STANDBY, NORMAL, DISCHARGE rows of the mode table ('SOC<10%(DEFAULT): LED1 FLASH').

CauseState of charge has dropped below the 10% default threshold. This is a recharge prompt rather than a fault — LED1 flashes while the battery keeps operating in standby, normal, or discharge mode.

Source:felicity-5.1-kwh-user-manual.pdf· page 9

Per 10.2 Troubleshooting: when the red/green LED on the panel is flashing or normally on it may be just an alarm or protection. Check the 'LED fault message' in chapter 7 for detailed fault-shooting steps. Generally the alarm indication is normal without manual intervention; when the alarm trigger state is removed, the battery system automatically returns to normal use.

CauseAn alarm or protection has triggered and the pack is signalling it through the red/green LED pattern — usually a recoverable condition that clears automatically once the trigger (temperature, current, or voltage out of range) is removed.

Source:felicity-5.1-kwh-user-manual.pdf· page 11