MikeNDea
Tulsa, OK
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Joined: 05/08/2008
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Is this what you would use to fill up freon?
We're still trying to figure out why the air isn't cooling...
Mike & Dea
3 Lil' ladies
34' '96 Newmar Dutchstar
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Lt46
Cape Cod, Ma.
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Joined: 10/15/2002
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Appears to be, but simply because it is there means, it has a leak in the system. RV AC's are closed systems that do not come with these fill ports from the factory.
Peter & Dawn
97 Winnebago Adventurer 37RW
91 R2500,454 Chevy Suburban
96 Prowler 27X SOLD
Yamaha EF2800I
IAFF L-792
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Calpine
Southern CA
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Joined: 04/19/2008
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Yes,
Its a sealed system but someone has brazed in the access port you are showing.
Before you fill check & see which type freon. Probably R22.
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javaseuf
Southern Cal
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Joined: 03/30/2005
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All RV roof-airs use R22 refrigerant.
Also, if you find the refrigerant low, then you have a leak that needs to be addressed before adding more refrigerant.
Steve
2007 Springdale 291RKL
2003 F150 King Ranch
2001 Dodge Van w/Wheelchair Ramp
1991 Palomino Mustang PUP
Eureka Timberline Tent
Yamaha IF2400isc
Yamaha EF3000iSEBC
"Politically Incorrect And Proud Of It" 
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donawilcox
Taylor TX
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Joined: 02/13/2008
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That is where you ck the freon but you would need gauges to do this. First question does the Compressor run. if it runs the large line which is the line you are showing should get cold to the point it is sweating cold water. It should still at least start even if it is out of freon. Did it have a cap on it? if not that could be your leak. If compressor does not start there are several reasons and if compressor is out and the unit is over 5 year old plan on buying new unit. Compressor installed will be more. Chances are as Peter said since it has this sweated in it has been charged before and has a leak elsewhere. To look for a leak you will look for oily or dirty spots.
If you have a good A/c guy for you home he may be willing to service your unit cheaper than the dealer. Some will not work on them. If you were closer you could bring it buy and could charge it for you. If compressor does not start there are multiple things to ck but will not go into them yet.
Good luck and by looks it may be time for a new system. Let me know if I can help any further.
Don Wilcox
Taylor TX
2006 Duramax 4X4
2007 295 Cherokey by Forest River
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dougrainer
Carrolton
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Joined: 06/11/2007
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If that AC is the original (1994), I would NOT pay to fix it. It would be best to replace the upper unit. Doug
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smkettner
Southern California
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It is old and has been repaired once. Get a new unit.
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nbounder
Arizona mountains
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I suggest an E-Mail to Golden HVAC, a poster who runs an A/C business. I believe he's the best source of A/C info on the forum. I used to do that stuff, too, but I am not comfortable advising a novice - been too long!
Joe
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doughere
Mooresville NC
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Joined: 10/27/2005
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What you are showing is a charging port that was added because the unit at some time leaked, and was recharged.
This is where freon would be added. You need a set of charging gages and lines and a source of R22.
In that you are asking this question, I suspect you don't have the required license to purchase R22.
You need to find someone with the equipment and expertise to check system / find leak / fix leak / evacuate system / recharge system. These systems are nothing more than window AC units in a different package; any AC repair tech should be able to fix them. If this is a 12 year old unit, I'd think hard about replacing it. A new unit is in the $ 500.00 to $700.00 range and is a resonable do it your self project.
Regards,
Doug
* This post was
edited 05/30/08 07:28pm by doughere *
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