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Old 05-13-2013, 10:58 AM   #1
LoveToCamp's Avatar
Join Date: May 2011
Posts: 50
Air Conditioner leaking issue

Hello all again. I am having a "leaking" air conditioner issue in my 5er that I need a little help with. I have done a lot of research on this issue and thought that I corrected it, but evidently have not. Here is the issue:

When the main A/C in the living room runs for an extended period of time, it evidently develops a lot of water from somewhere and when I turn the a/c off at the thermostat it dumps all that water inside the coach. In addition, it sounds like the a/c compressor continues to run even though the unit is off. I have to then flip the breaker to get the compressor to turn off. Once I have flipped the breaker for about an hour or so I will flip it back on and it will run normally.

At first I thought the drain pan has been filling up or the weep holes were clogged. I was also told to raise the nose of the 5er a little more than normal to ensure the drain pan would empty properly. That did not work at all. I disassembled the a/c covers over the weekend and the drain pan is clear and not clogged. I even poured a liter of water into the drain pan to see if I could recreate the problem and no luck. It appears that the water is coming from somewhere else other than the pan. The water pours into the coach from the vent in the a/c unit where the fan is not where the filter is. After inspecting the unit this weekend, I don't see how the water is getting to where it leaks into the rv from the point that it does. There is nothing below the fan that water or condensation would accumulate. Any thoughts?

2011 Heartland Big Country 3595RE
2005 Ford F350 dually 6.0L Diesel
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Old 05-13-2013, 11:14 AM   #2
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Location: Cincinnati
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It sounds like some of the tubes are frosting up, then when the unit is turned off, it melts and drips. You'll need to open things up and get eyes on the coils right after it is turned off to see the water path.


Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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Old 05-13-2013, 06:30 PM   #3
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Join Date: May 2011
Posts: 50
I thought about that, but the water pours into the coach immediately when the a/c is turned off.
2011 Heartland Big Country 3595RE
2005 Ford F350 dually 6.0L Diesel
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Old 05-13-2013, 08:23 PM   #4
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I would still think the pan is cracked/clogged.
When the fan is running, the air flow keeps a lot of water from draining. Once the air stops, a lot of water is let loose and then drains. Sounds like a LOT of water is being held up.
Sounds like you might have a relay sticking also keeping the compressor on. Depends on what this unit is. Coleman/Dometic/Other. AC only or HP too?
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