When I plug the iron in the lights are flashing like crazy - they should stop and only the red light on the bottom left column should be on - then the iron will heat. My irons keeps flashing like crazy and won't stop - I unplug and do it again, I put the iron in different positions, and after SEVERAL minutes it finally stops flashing and the one light stays on - as it should. Each time I wonder if this is the time it won't quit flashing. Am I doing something wrong?? Please advise. Thanks.