I think DQDICK hit the nail on the head as far as how the thermostats work. for an rv thermostat they are way better than what comes in a lot of rv out there. their are some good youtube videos to show you how to work the T\stat. It sounds to me like the dealers aren't doing a very good job at the PDI of showing new owners how they work or they don't know either which is more the case!
Bob & Carol
Washington St
2017 352RL 2008 Dodge 3500 DRW crew cab 4x4 LB 6.7L
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