Breakers can trip without looking like they have tripped. They then have to be turned off then back on. Depends on the breaker manufacturer.

This might be a case of a little knowledge be dangerous. You might be going deeper than advisable without requisite knowledge,tools and experience. There's plenty of people on houzz willing to guess at the problem and solutions but they are doing you no favor. Hire an electrician to check this out,it's not worth the risk to save $200. If you actually have electrical experience and familiar with multimeters but just failed to mention it,digging deeper might make sense.

what sofaspud said. lol

I agree with SaltiDawg

better?

gallagher, is it maybe that the label on the breaker is leading you astray? if the fan is in your master bedroom you can in no way assume the fan is on a breaker in your box labeled master bedroom. you can never take breaker labels at face value. this is why I used a circuit tracer to determine which ones drive every switch and outlet in my house, and then wrote the breaker number on the back of the cover plate, but I still don't assume I've opened the right breaker. always use a checker.

May be a ghost? :-)

So I think sofaspud pinpointed the problem and mz_161 had a great idea with marking circuits inside covers.

Sounds to me like both weedmeister and sofaspud were correct - some other breaker tripped (that the fan WAS actually on) but it didn't look like it had tripped (maybe no orange indicator showing) and wasn't noticed. Then when they were all reset, it got reset and the power to the fan came on. I award a point for each of you.

Take two of my points,I was under the impression power was permanatly lost until I read other resposes. Klem do so-so ok with hammer and wrench,not so well with riddles.