Charging using SOC parameters

My gridboss/flexboss21 is not charging as specified. Charge is set to charge using SOC. But does not initiate when minimum level is reached. Flexboss drops into standby mode and load is transferred to grid. Also I have no grid light on gridboss which is always in standby mode. Also I am operating without pv at this time. Three wall mount batteries in service Monitor shows normal grid function. Could use some help resolving these issues