I have a F1050 iron. I have had it for a few years but has been rarely been used. I have been ironing curtains and it has been working well. All of a sudden I don't have heat. The auto red button flashed but still no heat. I have shut it off overnight but still no heat this morning. It is good shape, I hate to get a new one since it is still practically new. There are no troubleshooting answers in the manual. Can you help or do I need to get a new one. Please respond asasp.