noticed the past 2 weekends when i washed boat my rule 100 pump i installed last year was short cycling, (surging), on and off , when i hit the manual switch pump worked perfect so i ran water into bilge and the pump kicked on and started surging on and off again, this time i continued to put water into bilge and it just keot surging until i hit the manual switch again, pump is one year old and i think it does not have a float switch but some type of circuit board to sense water, is there a better pump someone can recommend my boat is in a slip and i want a pump i can trust or maybe a fix for this pump.