Have you had any issues with you A/C Thermostat after using the heater?
The other day, I used the heater in the morning to take off the chill. After using the heater, I selected "Cool" on the thermostat and changed the setting to 75 degrees. The temperature in the coach was under 75 degrees at this time. As the coach warmed up an hour or so after using the heater, the A/C did not kick on although I had a separate thermostat which was reading 82-83 degrees. I believe the separate thermostat is fairly accurate and the A/C should have kicked on. I pulled the cover off the thermostat to see if there was any dust or debris under the cover and A/C immediately kicked on. Throughout the day, the A/C kicked on and off as if everything was working okay.