Troubleshooting - LG LGES-5048 User Manual
Hybrid solar inverter
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Also See for LGES-5048:
- Quick installation instructions (4 pages) ,
- Quick installation manual (18 pages) ,
- User manual (37 pages)
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4.2 Troubleshooting
Please see
www.lgessbattery.com/au/home-battery/product-info.lg
Questions & Answers (Q & A)
About Wi-Fi Configuration
Q: Why can't I find the Solar-WiFi* signal on mobile devices?
A: Normally Solar-WiFi* signal can be found right after inverter has powered up. But Solar-Wi- Fi
signal will disappear when LGES connects to internet. If changes to the setting are required,
connect to the router for change. If you can't find the WiFi signal or connect to the router, then
please try to reload Wi-Fi (please refer to User manual page 18).
Q: Why can't I connect Solar-WiFi* signal on my phone?
A: The Wifi module can only connect to one device at a time. If the signal is already connected to
another device at the time for some reason, you cannot connect to the signal.
Q: Why does the Wi-Fi module fail to connect to network after I choose the right router
hotspot and enter the right passwords?
A: It's possible that there are special characters not supported by module in the hotspot
passwords. Please modify the password to consist of only Arabic numerals or uppercase
/lowercase letters.
About Battery Operation
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Q: Why does the battery not discharge when grid is not available, while it discharges
normally when grid is available?
A: On the App, off-grid output and back-up function should be turned on to make battery
discharge under off-grid mode.
Q: Why is there no output on back-up side?
A: For back-up supply, the "Back-Up Supply" on LGES PV Master must be turned on. Under off-grid
mode or when grid power is disconnected, "Off-Grid Output Switch" function must be turned on
as well.
Note: When turning "O -Grid Output Switch" on, don't restart inverter or battery, otherwise the function
will be switched o automatically.
Q: The battery cannot be fully charged to 100%?
A: Battery will stop charging when battery voltage reaches charge voltage set on LGES PV Master.
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 after-sales.
Q: Which battery should I use for LG?
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 LGES PV Master?
A: It could be caused by losing connection to Solar-WiFi *.
1. Make sure you have already connected Solar-WiFi* (make sure no other devices connected) or
router (if connected Solar-WiFi* to router). App's homepage shows connection well.
2. Make sure you restart inverter 10mins after you change some settings because inverter will
save settings every 10 mins under normal mode. We recommend to change setting parame-
ters when inverter is in wait mode.
Q: Why are the data displayed on the homepage different from the parameter page, like
charge/discharge, PV value, load value or grid value?
A: The data refresh frequency is different, so there will be a data inconformity between different
pages on the App as well as between these on portal and App.
Q: Some columns show NA, like battery SOH, etc. Why does that happen?
A: NA means App does not receive data from inverter or server because of communication
problem, such as battery communication, and communication between inverter and the App.
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