K Kaseyk22 New member May 13, 2018 #1 May 13, 2018 1 0 Houston, TX May 13, 2018 #1 Hi. My timer has been working great for three years. Now the on sensor isn’t engaging but the off sensor is. I can manually turn the filter on. This started happening after a heavy rain that tripped the filter’s breaker. Ideas? Thanks!