Problems During Operation - Goodwe ET Series User Manual

Picture 28
Check after starting the inverter and connecting to the distribution network
Battery settings, BMS communication, and country settings: After connecting to Solar-WiFi * (*last 8 characters
of the inverter serial number), check that the correct battery type and country settings are set in the PV Master
- Param application (Fig. 33). If it is not correct, please set it in "Basic Setting".
NOTE:
For lithium batteries, check the BMS status "Communication
OK" If the BMS Status is "NG" or "NA", check that the
batteries are correctly connected and set according to the
quick installation guide.

Problems during operation

The inverter does not start up with a battery only
Solution:
1. Make sure that the battery voltage is greater than 180V, otherwise, the inverter cannot be turned on.
The inverter did not start up with PV only
Solution:
1. Make sure the PV voltage is greater than 180 (230 V is needed to enter on-grid mode).
2. Make sure that, for the connection between the inverter and PV panels, the polarities are (+/-) not
reversed.
At night or during the day, with low PV power, there is no battery discharge
Solution:
1. Communication between the inverter and the Smart Meter shall be OK;
2. Make sure the power consumption is higher than 150W.
(a) the battery is not running smoothly, even if the power consumption is more than 150W;
(b) if the battery is still running low, even if the power consumption is more than 150W, please check that the
Smart Meter and CT are properly connected;
3. Make sure the SOC is higher than the 1-DOD. Or if the battery is dead below 1-DOD, then the battery will
start to run out again if the SOC is at 20%+(1-DOD) / 2 or SOC 105%-DOD (if you need to drain the battery
immediately, you need to restart it).
4. Check the app to see if the charging time is set, as the battery will not drain during the set charging time (the
set charging will be taken as a priority during the same charging/discharging time).
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