Forum Discussion

rdpackwood's avatar
rdpackwood
Explorer
Oct 17, 2014

Air Conditioner Keystone Montana

We have a 2014 3625 Keystone Montana Big Sky with two AC units. Our rear AC only runs at high speed and is very load..
Our living room AC seems to only run on low and will not cool down our rig on a hot day and dealer said there is no blocked ducting, They ran a camera through the duct and found nothing. We are told since there are two AC this is normal. Can anyone shed some light on the air conditioner.We believe the fan speed should operate on both units not just one speed as we being told.
  • huntram's avatar
    huntram
    Explorer
    Oct 18, 2014
    kennethwooster wrote:
    We have a Cameo with 2 Colemen units. The rear does not have thermostat, but has 2 fan speeds. The front has 2 fan speeds through the thermostat. Maybe I'm wrong but sounds like they are telling you a story.


    On our 2011 Cameo both the bedroom and the living room Coleman units have thermostats. They also have low/high/auto settings.
  • kennethwooster's avatar
    kennethwooster
    Explorer
    Oct 18, 2014
    We have a Cameo with 2 Colemen units. The rear does not have thermostat, but has 2 fan speeds. The front has 2 fan speeds through the thermostat. Maybe I'm wrong but sounds like they are telling you a story.
  • aruba5er's avatar
    aruba5er
    Explorer
    Oct 18, 2014
    are you sure it has 2 speeds? my dometic has only 1 speed. My thermo has only auto or on and that is not a speed. a model # whould be great and then you could look up on Google and get a wiring dia and see how many speeds you have
  • Chiefcpo's avatar
    Chiefcpo
    Explorer
    Oct 18, 2014
    Had a 2012 3625RE and there was only one thermostat and only conrolled the rear a/c fan. The 2014 Redwood 38GK has two thermostats and can control the fan speeds on each.
    Had no problems with the Big Sky, just the floor plan did not suit me nor the "J" sofa. Otherwise it was a great unit with only 4 minor problems covered under warranty.
  • Gruffy's avatar
    Gruffy
    Explorer
    Oct 18, 2014
    Well, I'll tell ya....

    Having had a Montana open the ducts / ac covers and get a mirror and a flash light.

    Look up and down the duct work using mirror and flash light like a periscope. You will probably find duct work has collapsed during manufacturing. You will also finds voids and blown sealing, just from the factory.

    Run your fingers around the AC/duct connections and your gonna find your trying to AC the whole ceiling, not the coach.

    Good luck!
  • oohboy's avatar
    oohboy
    Explorer
    Oct 17, 2014
    I own a montana..what type of thermostat do you have..you should be able to adjust your fan speed from auto, high or low..

    if you set your a/c to low you will freeze your system up and then it will blow loud..
  • sdianel_-acct_c's avatar
    sdianel_-acct_c
    Explorer
    Oct 17, 2014
    what brand of AC's and thermostat do you have?
    In our Class A, we have 2 Dometic AC's and the 5 button Comfort Control thermostat. Our AC's work on either fan speed. Auto, low, high. The newer AC in the front also has a med fan setting. We usually have them both on the same setting (auto).

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