Sump pump turning on randomly

I've moved into a house with a sump pump and over the summer last year, I re-graded the slope around the house and the sump pump hardly ever gets water into it (a good thing). It went from going off every rainful to maybe once a month or so. In the last two weeks or so, the pump runs a few times a day even though there is no water going into it - the drainage pipe is bone dry.I tested the float switch by lifting it vertically and it does pump correctly. Add buckets of water and it pumps out water as well.I'm wondering what's happening down there? Why would it randomly turn on without the water level rising? Is it an electrical issue maybe, or an issue with the pump itself? via /r/DIY


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