Did you just fill up the spa , first time,,,,, the Circ pump runs 24/7 injecting ozone and filtering, if you just filled the spa and you do not see ozone bubbles, and topside has a error code there is probably an air lock in the circ pump, when you filled it did you you pull the thum screws by the filter lids, and did you fill the water with the hose in the circ ulation filter chamber......