srgallan
Atlantic Canada
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Joined: 07/12/2023
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Hi folks,
Question I wanted to post to the group here as I try to find more information sources. Picked up used 2019 TT August last year and noticed this year that if the AC is running and we have a lot of rain we see water dripping inside. If not running during the rain there is no water.
I already had mobile service from the dealer come here and say they could not find anything and drain was not clogged and last time they ran into this a new AC was installed to fix it. He did clean the drain a bit.
My thought if it was to happen again to have a new gasket installed if possible but have no ideas. Any suggestions?
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enblethen
Moses Lake, WA
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You could tighten the AC unit mounting bolts as the gasket may have settled.
Make of AC unit?
Bud
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TXiceman
Bryan, TX
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Don't over tighten the 4 bolts as this will crush the gasket. Tighten no moe than one fill turn on each.
If this does not stop the leaking, you will need to remove the a/C unit and replace the gasket. DO NOT caulk the gasket. The gasket should not be tighten more than what it takes to compress the gasket by 1/2. Tighten all 4 bolts equally.
Ken
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2023 Cougar 22MLS, toted with a 2022, F150, 3.5L EcoBoost, Crewcab, Max Tow, FORMER Full Time RVer. Travel with a standard schnauzer and a Timneh African Gray parrot
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JRscooby
Indepmo
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First, is water leaking in, or is it condensing inside the unit and dripping? When mine starts that I open a high window, and rig a fan to blow out. Normally stops fairly soon.
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srgallan
Atlantic Canada
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Thanks all, appreciate the input. I have never removed the AC unit so will spend some time googling that and give it a go with a friend to see if that fixes it.
@enblethen - it's a Coleman Mach 1
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enblethen
Moses Lake, WA
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TXiceman is correct to a point. Coleman units have four bolts. They have a spring around the bolts to keep unit tight as the gasket compresses. You have to urn bolts like 4-? turns so snug it up.
Bolts are accessed from the interior of the rig by removing ceiling unit.
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opnspaces
San Diego Ca
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You're not removing the AC. You are just removing the 4 screws holding the panel up on the ceiling inside the trailer. Once the panel is down you should see the four bolts that go straight up through the roof.
2001 Suburban 4x4. 6.0L, 4.10 3/4 ton
2005 Jayco Jay Flight 27BH
1986 Coleman Columbia Popup.
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MFL
Midwest
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An actual mobile tech, with just basic knowledge, should have already viewed existing gasket, snugged bolts if needed, or suggested replacing the gasket.
Often times an RV that is just a few years old will need bolts snugged up. If you install a new gasket, snug it properly, it too will likely need a bit more tightening, after a couple years of towing, and vibration.
Jerry
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JRscooby
Indepmo
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If you take the inside cover off to get to the bolts, you will likely see how the warm, moist air from the intake can contact the cold surfaces.
Maybe next rain, drop the cover, find source of water?
Lazy man idea about re-installing the 4 bolts; (Young person may have no issue, but many in my age group have problems working overhead) They are long, for diameter, and not a lot to guide the top end to hole. And while you are trying to get them started, you are holding the plate up and in place. I took a couple pieces of all-thread (1/4-20, IIRC) longer than bolts, screwed them into holes. Much easier to start nuts, and the studs hold plate up while start 2 bolts. Double nut to remove studs, replace with bolts
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Grit dog
Black Diamond, WA
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Lots of jumping around here. Stay on diagnosing for a sec.
Have you been in a heavy rainstorm without the AC running? Does it still leak? Did you try to make it leak with a garden hose spraying the roof/aC?
Because if it’s an external leak (gasket likely or possibly a thing else idk what) that should have nothing to do with whether the aC is running or not. It can’t suck in the rain as it doesn’t pull outside air in.
But as mentioned it’s possible it’s just condensation from being 105deg and 169% humidity lol.
But yes the most likely leak location is around the gasket. Either too loose, over squished or maybe it’s rolled or pinched. Could a been like that since new.
2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
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