[Tunesmith]

Up in Wisconsin, our A/C doesn't have a 'humidistat' control on it, so I had to look up what it was, and what it does. I thought this info might be useful to others, so here is what I found:

How Do Air Conditioners With Humidistat Work?
By Michelle Miley, updated November 28, 2018
Running a central air conditioning unit to maintain a comfortable temperature level inside your home when you won’t be there is costly, yet turning the air conditioning off completely in humid areas creates mold and mildew problems inside the home. The solution is a humidistat, which runs the air conditioner to control the humidity level inside the house independently of temperature.

How It Works:
While the thermostat on your air conditioner measures the temperature inside the home, a humidistat measures the humidity. If the temperature is high but the humidity level is low, the humidistat does not allow the air conditioner to run. This prevents using electricity to cool your home when you aren’t there. If, however, the humidity level inside the home creeps into the range where mold and mildew could become a problem, the humidistat runs the air conditioner until the humidity level is reduced. In this way, you protect your home from mold problems while you are away without having to maintain a specific temperature in the home.

Settings:
Make sure the air conditioner is set to the “cool” and “auto fan” settings, then set the temperature on the thermostat to 75 degrees Fahrenheit. Set the humidity level on the humidistat to 58 percent. Although mold and mildew do not form at humidity levels below about 68 percent, Craig Muccio of the Florida Power & Light Company recommends a setting of 58 as humidistat gauges can be off by as much as 10 percent.