LG LGES-5048 User Manual page 30

Q: Why does the battery switch always trip when it starts up (RESU battery)?
A: The switch of RESU battery normally trips because of following reasons
:
1. Battery DIP switches not set correctly
2. BMS communication fails. (10 minute delay to trip).
3. Battery Voltage is too low (<35V), battery trips to protect itself
4. An electrical short-cut happened on battery connection side. Or for other reasons please contact
technical support.
Q: Which battery should I use for the inverter?
A: LG Energy Solution RESU6.5, RESU10, RESU12, RESU13 (end of line)
About LGES PV Master Operation And Monitoring
Q: Why can't I save settings on the LGES PV Master App?
A: This could be caused by losing the connection to Solar-Wi-Fi *.
1. Make sure you have already connected to Solar-Wi-Fi* (make sure that no other devices are
connected) or to the router (if Solar-Wi-Fi* is connected to the router). The APP homepage shows
the connections.
2. Make sure you restart the inverter 10 mins after you have changed any settings because the
inverter will save the settings every 10 mins while operating in normal mode. We recommend that
parameter settings be changed when the inverter is in wait mode.
Q: Why are the data displayed on the homepage different from the param page, like charge/discharge,
PV value, load value, or grid value?
A: The data refresh frequency is different, so there will be data discrepancies between different pages
on the APP as well as between these shown on the portal and APP.
Q: Some columns show NA, like battery SOH, etc. Why does that happen?
A: NA means that the App has not received data from the inverter or server because of
communication problems, such as battery communications and the communications between inverter
and the App.
About the Smart Meter And Power Limit Function
Q: How to activate the output power limit function?
A: This function can be activated by following these steps:
1. Make sure the Smart Meter connections and communications are functioning correctly.
2. Turn on the export power limit function and set the maximum output power to the grid on the APP.
Note: Even if the output power limit is set to 0W, there might still be a deviation of a maximum of
100 W when exporting to the grid.
Q: Why is there still power exporting to the grid after I have set the power limit to 0 W?
A: Export limit can be 0W theoretically, but there can be a measurement deviation of around
50-100W.
Q: Can I use other meter brands to take over from the Smart Meter in the system or to change
settings in Smart Meter?
A: Generally, no, because the communication protocol is integrated into inverter and Smart Meter,
other brand meters cannot communicate. Also any manual setting change could cause Meter
communication failure. An exception is when using an LG Energy Solution approved meter for VPP
operations.
Q: What is the maximum current allowed to pass through the CT on the Smart Meter?
A: The maximum current for the CT is 120A.
27