Shutting Off The Battery Pack; Troubleshooting; Troubleshooting Overview; Post-Installation Checklist - LG RESU FLEX Schnellinstallationsanleitung

4.4 Shutting Off the Battery Pack
Shut off the battery pack through the following steps:
1. Turn off the inverter.
2. Open the front cover.
3. Turn off the battery pack by moving the circuit breaker switch to the OFF
position.
4. Make sure that every LED indicator on the battery pack is OFF. (After
10 seconds, the LED lights will turn off and the battery will shut down
completely.)
5. Close the front cover.

5. Troubleshooting

5.1 Troubleshooting Overview

Check the LED indicators on the front to determine the state of the battery
pack. A fault state is triggered when certain conditions like voltage or
temperature are beyond design limitations. The battery pack's BMS
periodically reports its operating state to the inverter.
When the battery pack falls outside of prescribed limits, it enters a fault state.
When a fault is reported, the inverter immediately terminates operation.
Use the monitoring software on the inverter to identify what caused the fault
state. The possible warning messages are as follows:
• Battery Overvoltage
• Battery Undervoltage
• Battery Over Temperature
• Battery Under Temperature
• Battery Discharge Overcurrent
• Battery Charge Overcurrent
• Battery Overcharge Power Limit
• Battery Overdischarge Power Limit
• BMS Internal Error
• External Communication Error
• Internal Communication Error
• Battery Cell Deviation Voltage
• Battery Pack Undervoltage
• Battery Urgent Undervoltage
The fault state is cleared when the battery pack resumes normal operation. If
battery pack is not working correctly and the issue persists, contact a qualified
staff, Installer or LG Energy Solution regional contact service point.
NOTE
For serious warnings, if no proper corrective action is taken by the inverter, the
battery pack's circuit breaker will automatically trip to protect itself.
CAUTION
If the battery pack or the inverter indicates FAULT or fails to operate, contact LG
Energy Solution regional contact point or your distributor immediately.
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5.1.1 Post-Installation Checklist

1. Visually check if the wiring matches the installation manual.
(Refer to the chapter. 4)
2. The circuit breaker is ON.
3. The battery LED power indicator is ON.
4. The inverter power is ON.
5. The inverter has the latest firmware installed.
6. The inverter recognizes the battery.
7. The battery is operational after installation.
7-1. The AC grid is connected.
7-2. The meter is installed.
7-3. Government approval is complete.
8. If any item in #7 is checked as no or if the inverter Needs to be
turned off, turn off the circuit Breaker.

5.1.2 Troubleshooting Guidelines

If the battery LED power indicator is OFF
1. Turn off the circuit breaker.
2. Turn off the inverter. Verify there is no power at the battery connection.
3. Unplug all the wires and reconnect. Check that the wiring on the battery
has been done correctly. Refer to Section 3 Battery-inverter Connection
4. Turn on the circuit breaker.
5. Turn on the inverter.
6. If the LED power indicator is still OFF, turn off the circuit breaker.
7. Disconnect the power cable connector.
8. Contact LG Energy Solution regional contact point.
1) Contact the inverter manufacturer.
2) Refer to the inverter installation manual or troubleshooting guidelines.
3) Refer to the Installation manual (3.Battery-inverter connection) for the
location of the battery. and the Circuit Breaker.
If the LED power indicator is ON, but the battery is not charging or
discharging
1. Update both the inverter and battery firmware versions. Refer to the
inverter's troubleshooting guide for instructions.
2. Check the inverter's battery settings. Refer to the inverter's troubleshooting
guide for battery setup instructions.
3. If the battery is recognized, inverter setup has been completed successfully.
4. If the issue persists:
4-1. Turn off the circuit breaker.
4-2. Turn off the inverter. Verify there is no power at the battery
connection.
4-3. Unplug all wires and reconnect. Check that the wiring on the battery
has been done correctly. Refer to Section.2. and 3.
4-4. Turn on the circuit breaker.
5. If the battery setup is correct, but the battery is still non-operational, turn
off the circuit breaker
6. Contact LG Energy Solution regional service contact point.
If the LED fault indicator is ON
1. Check if the inverter recognizes the battery. Refer to the inverter's
troubleshooting guide for battery setup instructions.
2. If the inverter is connected to the internet, collect the log fi les from the
inverter company.
2-1. Send the fault ID to LG Energy Solution regional contact point.
Yes No