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Old 08-11-2018, 07:29 PM   #1
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Dash Air Conditioner Problem

Something has gone awry with my 2015 Minnie Winnie 22R's dash air conditioning. It has been ceasing to blow from the dash A/C ducts and blows a little on the floor. Then, when it wants to, it will go back to blowing from the dash ducts. Any ideas?

I already have an appointment at my RV dealer Wednesday for some other work. Hopefully, they can take care of this.
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Old 08-11-2018, 08:21 PM   #2
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Have you used the blue to red temperature controller recently? Most times they are on full cool. Putting them to a warmer temperature will open a mixer valve/gate and could be stuck. Also the temperature controller works off of a vacuum and typically the little canister is under the front hood. it has a small 1/8 or so diameter hose connected to it It could have come loose or sprung a leak, Leak could be anywhere, even behind the dash.
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Old 08-12-2018, 05:38 PM   #3
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X2 on Wayne M, the vacuum lines are 3/32, I had to replace mine on my 2007 due to mechanical abrasion causing a vacuum leak.
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Old 08-28-2018, 09:06 AM   #4
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Yep, it was a vacuum leak. All fixed. Thank!
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Old 08-28-2018, 08:33 PM   #5
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Good news. Thanks for reporting back.
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Old 09-06-2018, 08:57 AM   #6
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I'm having a similar problem so this is helpful information. I need to replace one of the condenser fans also. The plan is to replace the fan when it arrives and check for the vacuum leak then.
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Old 09-14-2018, 05:47 PM   #7
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I am also having a similar problem. y wife says there is no cold air coming from the dash vents. There are two fans under the hood on the Workhorse 2004 chassis. One fan was burned out and that model is no longer manufactured. I could find them listed on line but the cheapest replacement was over $200. I went looking for similar fans and found identical ones at American Volt in Atlanta, GA. I ordered two individual fans with a total cost of about $70 with free shipping. The two fan set would have cost $80.
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Old 09-14-2018, 05:58 PM   #8
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The new fans are nearly identical to the original ones in size. The new fans are rated at 1400 CFM each, while the old ones are rated at 750 each. I will need to convert from puller to pusher mode this weekend before installing them.
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