Water pressure makes the unit kick on and off by itself. If the pump is turning on by itself that means that somehow water is draining into the pump creating enough water pressure that it will make it kick on and off. Inspect the flapper on the check valve inside the discharge elbow, also check the flapper on the flush valve inside the toilet tank, the flapper may not be closing properly and is allowing water to enter the pump.
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Water pressure makes the unit kick on and off by itself. If the pump is turning on by itself that means that somehow water is draining into the pump creating enough water pressure that it will make it kick on and off. Inspect the flapper on the check valve inside the discharge elbow, also check the flapper on the flush valve inside the toilet tank, the flapper may not be closing properly and is allowing water to enter the pump.