When a sump pump high-water alarm sounds, it indicates an emergency situation requiring immediate troubleshooting. Step 1: Silence the audio buzzer using the mute button on the alarm control box. Step 2: Verify that the primary pump is plugged securely into a live electrical outlet and check for tripped circuit breakers. Step 3: Examine the sump pit to ensure the float switch moves freely. Step 4: If the pump is burned out, bail water manually or deploy an emergency backup pump. Verification: Confirm that water is evacuating and the alarm sensor returns to standby mode.
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