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Old 07-29-2014, 06:51 PM   #1
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Roof top AC drain plugged

I have a 2005 HR Scepter that has drain lines running from the AC units down thru the ceiling and out the front and back of the motor home. The rear AC has started dripping onto CLR into the cup up top, but about every 2 or 3 days it starts dripping again. Is there something else I should use to clean this line out. I thought about a small drain snake, but the line has a hard 90 elbow right inside the unit.... Any thoughts? Thanks.

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Old 07-29-2014, 07:47 PM   #2
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If you can remove one end of the drain line, you could then clear it with air pressure from a small compressor or even flush it with a garden hose and a small nozzel. Then mix 1 quarter cup of household bleach with 3/4 cups water and flush the line with that mixture using a pump up sprayer to clean out any algae. That should get you back to square one on a clean line.

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Old 07-29-2014, 07:56 PM   #3
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My roof air started to smell musty after using for couple of hours. I think my drain may also be plugged. I'll try flushing then sanitizing. I'll have to find the manual to determine how to get to the drain. It's on a 1997 Rexhall.
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Old 07-29-2014, 10:00 PM   #4
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When you pull the inside covers check the 4 nuts that hold down the ACs I had to take mine up about 1/4" all around on both ACs. Keep the air psi low so you don't blow a line off inside a wall.
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