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Old 08-19-2017, 06:07 PM   #1
V2wings
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Ac problem

When I. Checked my Cougar to day I found that the AC was making a weird noise and there was water on the floor coming out of the ac and some was making a small stream of water running down the center of the rv. Shut it off and after awhile it quit dripping, I saw water still running off the roof. Never had this happen before. Not sure what happened
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Old 08-19-2017, 06:22 PM   #2
JRTJH
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It sounds like the condenser may have frozen up. The A/C gets very cold and any moisture in the RV can collect on the fins inside the air box, freeze and stop the airflow. That would make it sound "different" and when the compressor stopped, the ice would start to melt, dripping down into the RV.

There is a "freeze plug" that is a sensor, usually on a white wire, that is inserted in the fins of the condenser, very high up near the top of the air box.

First, turn off the air conditioner, turn off the A/C circuit breaker in the power panel (or better yet, unplug shore power), then remove the filter assembly, use a flash light, look up inside the air box. You'll see a metal box and a lot of wires going to it. That is not what you want. Above that you'll see one (probably white) wire that has a small plug on it. The plug is pressed between the fins on the condenser. Make sure it hasn't fallen out and is securely inserted between the fins.

You might also want to remove the inside ceiling assembly and look up into the air conditioner. You'll see, at each of the 4 corners of the hole in the ceiling, a long bolt that ties the rooftop part of the A/C to the trailer. Make sure those bolts are secure, but don't overtighten them. If you look at the top of the square box you will see a 1" thick foam gasket. That gasket should make contact along the entire surface of the RV roof and the bottom of the rooftop A/C unit, but it should not be compressed so much that it is deformed. Snug only, not overly tight.

Good luck.
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Old 08-19-2017, 09:18 PM   #3
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If your AC is the Coleman Mach 3 or a similar design, then when you have the ceiling assembly down you should check for a foam insert called the duct divider which separates the intake from the output side of the air conditioner. This has a tendency to shift out of position changing the sound of the air conditioner and allowing humid return air accross into the output section and ductwork where it condenses and drips at the ceiling assembly and the outlets. If it has shifted, locate some aluminum tape to help hold it in position.
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Old 08-20-2017, 03:12 PM   #4
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It is a Dometic haven't had a chance to check it out yet
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Old 08-20-2017, 03:30 PM   #5
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No matter which brand they all have the divider. Common for the factory to put in the wrong place or leave gaps on the sides. Aluminum tape is your friend
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