The trouble started with a red flow switch light on my Intellichlor IC-40 even when there was good flow (a problem noted by others on this board). I tried bending the flow switch stalk and then the light was always green, even when the pump was off. This worked to produce chlorine, but I didn't want to leave it like that. I bought a replacement switch from Optimum Pool Technologies, which installed very easily, but again the light was always green, even when the pump is off. Ive contacted the seller of the switch for a replacement, but I wonder if I am missing something?