I have being trying to get my SWG system to produce chlorine but not sure it is working. When on the Cell Reversing light comes on consistently but the Cell On light only comes on sporadically and when it is on the Service light is also illuminated. I have seen a Code 120 come on at times as well. I have replaced the Sensor and tried cleaning the cell but the conditions did not change. The cell is an old rectangular one and there does not seem to be a replacment for. I am thinking of scrapping the system and going back to Chlorine if I can not get the system to work consistently. Any suggestions on what else I can try to achieve this?