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FAQs Library
Q
Can the LCD Keyboard Support Displaying the Real-Time Occurrence Time of the Fault?
2025-08-21
A

 Yes, the button battery is installed on the keyboard, and the facility method: System setting=> Fault time enabled

Q
Can the STO Card of GD270-EU Be Removed?
2025-08-21
A

Yes, after removing the STO expansion card, you need to set P08.63=0 (invalid STO function), and then change the position of the jumper cap on the control board.

Q
What Happened to the Fan Not Turning After the GD28 Was Powered On?
2025-08-21
A

The fan control logic of GD28 adds a new function - speed regulation mode, in which the fan speed gradually increases with the temperature of the IGBT module, below 36°C, the inverter fan does not run, and the fan above 69°C runs at full speed; The feature defaults to the enabled state,set the ten place of P08.41 to 1 to enable.

Q
Why the GPRS adaptor always display off-line, and APN is correct?
2022-09-09
A

Firstly must make sure the APN info is the suitable with SIM card, then check with the network supplier, if the GPRS installation location support GPRS network, without GPRS network, it cannot connect to internet.

Q
After add the GPRS adaptor, why display RS485 off-line, network online?
2022-09-09
A

If network online, means the GPRS adaptor APN information is correct. RS485 off-line means the tac file is incorrect, please contact INVT to update tac configuration file.

Q
Photovoltaic water pump GPRS module added into the account, but did not respond?
2022-09-09
A

If the network and 485 status of GPRS module are displayed on the website, it means it can be used normally.
If only the network is online, check whether there is a problem with the 485 wiring and try to replace the shielded wire. If not, you can contact INVT to upgrade the internal TAC files remotely.
If the network and 485 status are offline, but the device has been connected and powered on, it means that the internal APN information and TAC file need to be updated. Please contact INVT to update.

Q
How to modify or update the APN information of the IOT GPRS module of photovoltaic water pump?
2022-09-09
A

INVT 2G IOT module needs to write the APN information of SIM card ,local operator, otherwise it can't connect to 2G network.
If you need to update the APN information, you need to prepare a USB to 422 cable, and contact NVIDIA technical support to obtain the upgrade software and tutorial.
Operation steps, please refer to below video link:

https://youtu.be/jGZgwqWGBXE

Q
What is the website and APP of the solarman monitoring system for solar inverter?
2022-09-09
A

SOLARMAN weisite
Solarman business(pro):  https://pro.solarmanpv.com   
Solarman(home):  https://home.solarmanpv.com
The business version can manage its own sub customer members and power stations.
The home version is only suitable for end customers to manage their own power stations. After login, you can click help to download the platform manual for learning.After create a plant,can follow to add your data logger into your solar plant.

PDF Download

Q
What are the optional parts for GD300L?
2022-08-26
A

The optional parts for GD300L are DBU&DBR, Reactor, Filter, many kinds of PG card, LCD/LED keypad, IO card, STO card etc. Please refer to the attached optional parts list.49.png


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