Debris prevents the system from sucking brine out of the tank during regeneration.
Open the small plastic tube inside the salt tank (the brine well). Pull the float assembly up. Ensure the float moves freely and isn't weighed down by salt buildup or debris. If the float is stuck, the system won't know when to stop filling. 40278 water softener full
Once you have cleaned the nozzle and venturi, start a manual "Extra Regeneration." Watch to see if the water level drops during the "Brine Draw" cycle. Preventing Future 40278 Errors Debris prevents the system from sucking brine out