If your sump pump stops working during a storm, you must troubleshoot the power and mechanical components immediately to prevent basement flooding. Step 1: Check if the power cord is plugged securely into a working GFCI outlet and verify that the house circuit breaker has not tripped. Step 2: Inspect the float switch to ensure it is not stuck against the basin wall. Step 3: Unplug the pump, wait 30 minutes for thermal cooling, and test it with a bucket of water. Verification: Pour water into the pit to confirm the motor activates and pumps water out effectively.
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