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Barbara ScottJul 26, 2025
What to do if my Schumacher Electric PI-750 red LED is on and the alarm sounds?
- LLisa SantosJul 26, 2025
If the red LED is illuminated, an alarm is sounding, and the inverter isn't working, it could be due to poor terminal contact, reversed connections, a blown fuse, or inverter shutdown. Check for poor connections at the battery or power supply, ensuring connection points are clean. Try rocking the clamps for a better connection. Unplug the inverter and reverse the clamps.