why can't I get my humidity control to work on thermostat installed by Munns last year at a cost of $400. That is the only reason we got a new thermostat for the house . I have humidity control set @ 65% & A/C @ 80° and humidity is saying it is 82%

When you have it set for regular home operation, the thermostat controls humidity by running the A/C in cooling a couple of degrees below the cooling setpoint, but no more than a couple of degrees. If it's cool and humid outside, you would need to lower the cooling setpoint to allow it to get cooler for dehumidification. It is just past a year since you purchased the thermostat, Munn's would be happy to send a tech to explain in person and help optimize advanced settings for your needs for no charge. Thanks, Ricky Davis Service Manager Munn's Sales and Service

Good answer, the HVAC is a residential system. To really get control of the humidity, you would need to have some reheat, after you have run the refrigeration compressor to meet the humidity setpoint.

Im not sure but if you'd like to call ths office im sure someone would be able to help you, i work in the accounting department