First, disconnect the unit by pulling out the breaker on the disconnect switch on the exterior wall next to the unit. If you don't want to do that, then make sure the circuit breaker on your electrical panel is off and the thermostat is turned off. Remove the screen from the top of the unit using a hex socket wrench. Then, you should be able to reach down inside the unit and remove the leaves. Be careful not to damage the thin metal fins on the coil.
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