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what does F3H mean on my Whirlpool Microwave?

When I go to use my whirlpool microwave, a code comes up which is F3H, I can't seem to find out what it means.
We cannot use the microwave at this time.

Model GH5176XPX-0
Jerry Haines, July 2007
Before calling out a service tech., try shutting down the circuit breaker for a couple of minutes to allow oven to reset. It worked for mine.

jeff, August 2008
Hi,

I found:

F3H —Humidity Sensor Failure: Refer to the Tech Sheet and test the sensor. unfortunately it will require a service call and a tech to come out and fix it.
-Ron

Ron, January 2008
link Click here to see other fixes for Whirlpool.