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shifty47's avatar
shifty47
Explorer
Jul 21, 2015

Dometic ccc2 thermostat simple operation

Have a 2015 Mountaineer 375FLF w/ 2 ac's. Need some simple instructions on how to get the ac's to function, in simple terms. I'm on a 30 amp site so I know that I can't run both ac's, but I can't get the bedroom fan to shut down. TIA!!
  • SCSunseekers's avatar
    SCSunseekers
    Explorer
    Jul 21, 2015
    On the bedroom thermostat, hit the + button until you see AU (Automatic). This will set the temp and allow the unit to turn off. If you hit the button again, it will change to HI and then Lo. We keep the bedroom unit on if we are living area and living room on when we go to bed. Just one unit seems to keep the entire camper cool and much quieter.
  • Halmfamily's avatar
    Halmfamily
    Explorer
    Jul 21, 2015
    The bedroom should be zone 2, make sure the fan is set to auto. If the fan is on auto and still not turning the fan off turn of both units. Reset the t-stat by pressing and holding the mode and zone buttons at the same time. This should clear any issues, I've had to do this twice.

    You can run both A/C's on 30 amp, we do so when we stay at the lake several times during the summer. Make sure your water heater is on propane and start one A/C wait a couple of minutes and start the other. As long as no other major power source is running like your water heater or microwave you shouldn't have an issue.

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