1. Inspect the float switch housing for debris, oil, or sediment buildup that may be physically preventing the float from rising.
2. Use a soft brush or low-pressure water to clear any obstructions around the hinge mechanism to ensure free movement.
3. Manually lift the float switch arm to its highest position to verify if the pump activates.
4. If the pump fails to activate, perform a bypass test by carefully connecting the switch's input and output wires together; if the pump runs, the internal switch mechanism is confirmed faulty and requires replacement.
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