Battery Voltage Setting Too Low - Victron energy SmartSolar MPPT 100/30 Manual

2. In case the above step is not possible, measure the battery and PV voltages at the solar charger terminals using a multi
meter instead.
3. Compare both voltages, the PV voltage needs to be 5V higher than the battery voltage for charging to commence.
Causes of zero or low PV voltage:
Not enough solar irradiance into the solar panels:
• Night.
• Cloud cover or bad weather.
• Shading – see this shading blog story
• Dirty panels.
• Seasonal differences.
• Wrong orientation and/or inclination.
Problems with a panel or panel wiring:
• Mechanical or electrical issue with an individual panel (or multiple panels).
• Wiring problems.
• Blown fuses.
• Open or faulty circuit breakers.
• Splitters or combiners issues, or these are used in an incorrect way.
PV array design issues:
• Solar array configuration mistake - not enough panels in a series string.
• Wrong panel types - 12V solar panel and a 24V battery bank.
Reverse PV polarity:
• The positive and negative have been swapped when connected to the controller, read next paragraph: "Reverse PV polarity".

9.2.6. Battery voltage setting too low

The battery will not be charged if the "battery voltage" setting in the VictronConnect App is set at a voltage lower than the actual
system voltage.
Check that the battery voltage is set properly in the settings of the solar charger. The battery voltage setting has to match that of
the voltage of the battery.
To access the "battery voltage" setting, navigate to the controller settings in VictronConnect and then click on the "Battery"
settings menu.
The "battery voltage" setting is listed at the top of the battery settings menu. Depending on controller model 12, 24, 36 or 48V can
be selected.
In case the VictronConnect App is not available and a display is used, refer to the display manual on how to check or change this
setting.
Page 40
MPPT solar charger manual
V
for more information.
VictronConnect battery voltage setting
V
Troubleshooting and Support