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Old 05-27-2007, 08:43 AM   #1
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Our dashboard air conditioner just, out of the blue, stopped working. Now, no matter what the setting (vent, heat, a/c) it blows hot - and I do mean HOT - air. The only way to get it to stop is to turn it off altogether. Before it went bad, it worked just fine. Plenty of good, cold air, so I don't buy that its a venting problem 'under the hood'.

Anyone have any ideas? I wanted to try this forum first before embarking on the motorhome manufacturer vs. chassis manufacturer back-and-forth that I've seen others get into when they tried to get their a/c problems fixed. I've checked every fuse I can find, and even found one that wasn't listed in the documentation.
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Old 05-27-2007, 08:43 AM   #2
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Our dashboard air conditioner just, out of the blue, stopped working. Now, no matter what the setting (vent, heat, a/c) it blows hot - and I do mean HOT - air. The only way to get it to stop is to turn it off altogether. Before it went bad, it worked just fine. Plenty of good, cold air, so I don't buy that its a venting problem 'under the hood'.

Anyone have any ideas? I wanted to try this forum first before embarking on the motorhome manufacturer vs. chassis manufacturer back-and-forth that I've seen others get into when they tried to get their a/c problems fixed. I've checked every fuse I can find, and even found one that wasn't listed in the documentation.
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Old 05-27-2007, 09:52 AM   #3
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Welcome to the forum, Bryan and Susan. This topic has come up before, hang on and someone will help you out. I havent had the problem myself. Yet. You could do a Search for air conditioning, dash air, etc. Lots of good information here, but sometimes you have to dig for it.
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Old 05-27-2007, 03:09 PM   #4
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Bryan, look for the Evans valve under your hood. Here's mine in the Winnie:

These valves are notorious for sticking. They stop the flow of hot coolant into your mixing box.

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Old 06-04-2007, 02:58 PM   #5
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Yep, When I purchased my Dolphin I had the hot air in any position on the dash air. Had the Evans valve replaced and the A/C blows cold now.
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Old 06-04-2007, 07:34 PM   #6
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If A/C system is too low on freon charge, a low pressure switch in the system will prevent the compressor from coming on.
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