Frequently Asked Question
Parameter # is NOT set to  UTI (default)
Setting  to SOL or SBU will NOT charge from the AC MAINS Input until the battery is discharged to Parameter #[04} setting "Battery to LINE voltage"
Setting parameter # to OSO will DISABLE AC in charging.
Why: Setting  to SOL/SBU is a mode that will run the LOADS off Battery and/or Solar power until the battery reaches the voltage setting in parameter #. Then the battery will be recharged to the voltage setting in parameter #. Since the DIY series inverters do not SELL to GRID this is a way to maximize Solar Power to run LOADS. UTI Mode is preferred when the user wants maximum backup power available for a grid power failure. (UPS mode)
Setting  to OSO will only use PV for charging.