The main issue is that the grid standard does not stay saved after it gets changed. For example: going to Advanced Settings > Select Standard > select UL-240V > Enter > Esc > Save & Send > Esc > Save & Send > going back to Select Standard to view the current standard it displays as G59/3 and not UL-240V.
When going to Software Update > DSP Update > the current version displays as "00" and not the actual version number
The cause of the problem is one of the following things:
1. There is no firmware on the DSP board
2. The firmware on the board is not functioning correctly
3. There is a poor connection between the DSP board and the inverter
1. Flash the DSP firmware
a. This is done by performing a DSP firmware update using the Solis update tool
b. Perform a DSP firmware update to the current version
c. See the solutions article called "DSP firmware updates"
d. Check the DSP version number to ensure that it is no longer "00"
e. Turn the inverter completely off and let it sit for ten minutes, then check the version one more time
2. Please contact Solis Support for further assistance if the version is still "00"
a. See the article "Advanced Hybrid DSP Issues"
b. A new DSP board will be required at this point, or an RMA will need to be processed