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Old 09-17-2016, 11:07 AM   #1
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Dash A/C doesn't cool

Help! I have a 2006 Fleetwood Discovery 39L. The green light comes on on the dash but the air does not get cool. I suspect a fuse to the compressor but I cannot find any hint of a fuse for the a/c compressor. Anyone have any insight as to where the fuse might be? Thanks for any help.
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Old 09-17-2016, 11:19 AM   #2
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Do you see any indication on the dash air assembly ( by the heater hoses A/C lines of the manufacturers name on the unit .
Evans or Denso ?
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Old 09-17-2016, 11:30 AM   #3
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I will go check and post in a few.
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Old 09-17-2016, 11:41 AM   #4
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Should have posted this on my fist post .
Here's what to look for on an Evans system.
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Old 09-17-2016, 11:48 AM   #5
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Denso
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Old 09-17-2016, 11:52 AM   #6
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OK, all my info is on Evans .
I have this web site , don't know if they have wiring diagrams posted., that would tell if the control is on the same fuse as the compressor.

HVAC Systems | DENSO Heavy Duty
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Old 09-17-2016, 12:57 PM   #7
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The problem may well be more than a fuse. If the freon leaks down, and there is not a certain amount of pressure, the compressor will not start or it will shut down. The dash AC didn't work in our MH when we first got it. I tried a couple of those DIY filler cans from an auto parts store. They charged it up enough so the compressor would run, and it would blow cool for a little while. Then it would leak back down. I took it to a local shop that works on auto radiators and AC systems. They found that my compressor was worn out and leaking. I had them put in a new compressor and a new drier and recharge the system. That was 3 years ago and the dash AC on my 1998 Southwind is still working fine. I don't remember how much the bill was, but it was worth it.

If the DIY fill kit works, fine. For anything more than that, take it to an auto AC shop. They have the right equipment and know what they are doing. It does not have to be an RV specific shop. They can get the parts that your AC system needs.
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Old 09-17-2016, 03:26 PM   #8
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I concur with GrandpaDennis. Try the easy and cheap fix first. Go to an auto parts store and get an a/c recharge kit. Look for the low pressure port of the a/c system under the hood and connect to that. Following the directions on the kit.
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Old 09-18-2016, 05:22 PM   #9
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Bought the recharge kit. Man at the parts store says you can't recharge the system without the compressor running. Is that true?
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Old 09-18-2016, 05:36 PM   #10
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If your refrigerant is too low for the compressor to come on, still try to fill it, once you get enough pressure in the line the compressor will come on, you may also have to jump the pressure switch to get it to come on, but it should come on once you get about a half can of refrigerant in the line.
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Old 09-18-2016, 06:44 PM   #11
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What does the low pressure switch look like and where would it be?
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Old 09-18-2016, 08:21 PM   #12
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When mine was too low to run, I did manage to get enough freon in from the can to work the switch and allow the compressor to start. I believe I had to shake the can (actually, I rocked it back and forth - think wrist action) per the instructions. Somehow, that causes the stuff to expand or something, so it fills better.
I did this 2 or 3 times before I decided that I had to take it to the AC shop.
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Old 09-19-2016, 02:36 PM   #13
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Have tried adding Freon with the kit. It does not appear to be going in (can does not get cold). I think it is time to take it to the shop.
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