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?

You could tighten the AC unit mounting bolts as the gasket may have settled.Make of AC unit?

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

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.

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

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.

AC leaking when running combined with heavy rain

enblethen
Nomad
Jul 12, 2023
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.
srgallan
Explorer
Jul 12, 2023
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
JRscooby
Explorer II
Jul 12, 2023
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.
TXiceman
Explorer II
Jul 12, 2023
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
enblethen
Nomad
Jul 12, 2023
You could tighten the AC unit mounting bolts as the gasket may have settled.
Make of AC unit?

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AC leaking when running combined with heavy rain

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