I think any reputable appliance repair shop, Sears or otherwise should just tell you the reset sequence and inform you that if it keeps happening you really have a problem and need someone on site to diagnose if you can't yourself. It did come on for a reason - not just a fluke in all cases. But in my "about to fully fail" heater element it was on it's way out so got ripped for $95 and then another $55 for a re-diagnose. IE: the first time a reset gave the solid clean, the second time the reset just resulted in another blinking clean after the element fully gave out. The problem changed over the course of a few days. I suspect my issue might be pretty common.
My advise would be to just call up Sears first rather than a third party.