If not in use, be sure that the Fabric Select Dial and Steam Lever are both set to O/Off. Otherwise, the steam valve will remain open, allowing water to enter the steam chamber. The water will not be turned into steam without the iron being turned on, and the soleplate will flood, causing leakage. If the temperature setting is set for a low temperature, such as Synthetic, and the Steam Lever is set for high steam, the iron may leak due to the temperature not being high enough to generate steam for the selected steam setting.