Wifi Setting - Goodwe ET Series User Manual

Q&A
Wi-Fi setting
Q: Why can't I find the Solar-Wi-Fi signal on mobile devices?
A: Normally the Solar-Wi-Fi signal can be seen immediately after the inverter has powered up. However, the
Solar-Wi-Fi signal will disappear when the ET connects to the internet. If changes to the settings are required to
connect to the router for changes. If you cannot find the Wi-Fi signal or connect to the router, please try to
reload the Wi-Fi.
Q: Why can't I connect to the Solar-Wi-Fi signal on my phone?
A: The Wi-Fi module can only connect to one device at a time. If the signal is already connected to another
device at the same time, you will not be able to connect to the signal.
Battery
Q: Why does the battery not discharge when the grid is not available but it discharges normally when the grid is
available?
A: On the APP, the off-grid output and backup function should be turned on to force the battery to discharge
under off-grid mode.
Q: Why is there no output on the backup output?
A: For backup supply, "Backup Supply" on the PV Master App must be turned on. In off-grid mode or when the
grid power is disconnected, the "Off-Grid Output Switch" function must be turned on as well.
Note: When turning the "Off-Grid Output Switch" on, do not restart the inverter or battery. Otherwise, the
function will be switched off automatically.
Q: Why does the battery SOC suddenly jump to 95% on the Portal?
A: This normally happens when BMS communications fail when using lithium batteries. If the batteries enter
float charge mode, the SOC is automatically reset to 95%.
Q: The battery cannot be fully charged to 100%?
A: The battery will stop charging when the battery voltage reaches the charge voltage set in the PV Master App.
Q: Why does the battery switch always trip when it starts up (lithium battery)?
A: The switch of the lithium battery trips because of the following reasons:
1. BMS communication fails.
2. The battery SOC is too low and the battery trips to protect itself.
3. An electrical short-circuit has occurred on the battery connection side.
Q: Which battery should I use for the ET?
A: For the ET series inverter, you can connect to lithium batteries that have compatibility with ET-series
inverters with nominal voltages from 180 V to 600 V. For compatible lithium batteries, please refer to the
battery list in the PV Master App.
Setting and monitoring in the PV Master app
Q: Why can't I save settings on the 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 minutes after you have changed any settings because the inverter will
save the settings every 10 mins while operating in normal mode. We recommend 26 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: Since the data on the home page and the Param page are refreshed with a different time delay, there may be
a difference between the data. This also applies to the data in the app and on the GoodWe portal.