What do I do if the clamps are connected with reversed polarity?

Immediately disconnect the clamps — the unit will sound a continuous alarm and the LCD screen will flash the Alarm Icon, the '+' and '–' signs, and the Reverse Polarity Icons until the clamps are removed. Do not turn on the Jump Starter Power Switch while clamps are connected with reverse polarity, as this will cause permanent damage to the unit. Reconnect the clamps with the correct polarity before proceeding.