User Manual V1.3-2021-12-15 04 OTHER
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High power uctuations during battery charge or discharge
Solution:
1.Check if there are uctuations in load power.
2.Check if there are uctuations in PV power.
Battery does not charge
Solution:
1. Make sure that BMS communications are OK on the PV Master App.
2. Check if the CT is connected at the right position and is connected in the right direction per
the User Manual.
3. Check if the total load power is signicantly higher than the PV power.
Questions & Answers (Q & A)
About the Wi-Fi Conguration
Q: Why can't I nd the Solar-Wi-Fi* signal on mobile devices?
A: Normally the Solar-Wi-Fi* signal can be seen immediately after inverter has powered up.
However, the Solar-Wi-Fi signal will disappear when the inverter connects to the internet. If
changes to the settings are required to connect to the router for changes. If you cannot nd 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.
About Battery Operation
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 o-grid output and backup function should be turned on to force the battery
to discharge under o-grid mode.
Q: Why is there no output on the backup side?
A: For backup supply, "Backup Supply" on the PV Master App must be turned on. In o-grid
mode or when the grid power is disconnected, the "O-Grid Output Switch" function must be
turned on as well.
Note: When turning the "O-Grid Output Switch" on, do not restart the inverter or battery. Otherwise, the
function will be switched o 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 oat 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 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. Alternatively, for other
reasons, Please contact the after-sales department.
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