hvac and window a/c unit experts need help?

This is a common problem for homeowners who do not want to pay for a professional cleaning.

Most SPRAY water into the coils to clean them but what they are doing is forcing the dirt deeper into the coils where not even a professional can get it out.

Additionally, dirt is also where you cannot SEE it. Especially the drain from the front to the back. If it gets clogged, water spills out the front when running.

A professional will disassemble and chemically clean the coils and other components and protect electrical parts at the same time.

The "button" on a GFCI (if that's what you mean) pops out when there is a "ground fault", meaning the electricity isn't staying where it's supposed to be.  Be extremely careful, and do not touch the unit while it is plugged in while "testing" the GFCI.  It could literally kill you. 

Let it dry some more or have someone take it apart to find the excess moisture.  Read the operator's manual for clues as to what you did wrong and why they recommend against it.

Something electrical got wet.  Remove the unit again, take it apart and blow dry the unit.

Water is shorting out a connection that was never suppose to get wet.

If i were to guess i would say it got under the rubber cover on the compressor motor and you may have to remove the cover to allow it to dry

Just for future reference, don't wash electrical appliances. Wash the filters.

something electrical got wet and hasn't dried yet.  try again in 24 hours