I have a 2018 jayco slx 8 267bhs and my A/C is not coming on either. Fan and everything works fine but won't blow cold air. The Dometic thermostat is extremely sensitive and jumps past the setting u want if u touch button to long. Could the Thermostat stat be bad or did refrigerant leak out?
Had the same problem. Take off the t-cover and very carefuly put it back on. Then very carefully just touch the cover to start the A/C. It is very touchy.
__________________
2018 Jayco Jayfeather 27 RL, 2002 Ford excursion, v-10, 3:73 gears 4x4 mine. 2020 Buick Encore Hers, Retired Air Force, now Retired.