IC40, lights were flickering but unit was working. Several days later, all lights went out. Very strangely, I turned off power at circuit breaker, turn power back on, turn on timer which turns on salt cell. Red Low salt light comes on briefly, then Red Flow light and 40% (last setting I had it at) come on, then Green salt light is on, and then all lights go out. If I don't turn off the power at the circuit breaker, and just toggle the timer off and on, no lights of any kind. Checked inside power center, fuse is bypassed because it overheats, was told it was a bad design. LED light is on. What else can I check?