We moved into a 20 year old house in Nov 2002. The basement has two sump pumps and two pits, one for run off water the other for grey water. The strange thing is both pits are interconnected. We just had the run off pump replaced; the old one would not run at all. The grey water pump was cycling about every ¬Ω hour or so when it was the only one working. Now with the new pump installed it cycles on every minute, yes every 60 seconds. I called the company that installed it and they said that the float can not be adjusted. Would that be true? Next, it has been snowing and is a little wet in the area but can this be correct that the pump would cycle every minute. They did put a new check valve in so I don‚Äôt think the valve is leaking, plus I can hear it SLAM shut. I just don‚Äôt think it should be running that often. We did have the sellers provide a home warranty plan with the sale of the house, so if there is a problem I want to address it. I just don‚Äôt know what to think about it. Any help or advice would be greatly appreciated.