I have a 2014 motor home on a Freightliner chassis. Tried the max-AC setting on the air conditioner for the first time and there was no change from the normal AC setting. I know that it is under warr...
Class A motorhomes do NOT change fan speed on Max setting. ALL the MAX setting does is close the fresh air door and you recirculate the interior air, which will yield COLDER air, hence the Max description. Been this way for over 30 years. Doug