Usually this is a sign that you should call the repairman. However, I had a flashing light once because I made the mistake of trying to use my Ariston without turning on the water to it. I unplugged it from the power and let it sit for about ten seconds. When I plugged it back in, the flashing light was gone. I am not sure if this will help you or not but it is certainly worth the try.
Answers & Comments
Usually this is a sign that you should call the repairman. However, I had a flashing light once because I made the mistake of trying to use my Ariston without turning on the water to it. I unplugged it from the power and let it sit for about ten seconds. When I plugged it back in, the flashing light was gone. I am not sure if this will help you or not but it is certainly worth the try.