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Old 10-16-2011, 06:03 PM   #1
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Drip on Dash

It is getting cooler in the Seattle area. Condensation on the ACE cab windows are a daily happening. I have a drip on both sides of the dash coming off the rubber flap next to the top of the window. It is enough to wet two paper towels folded into a 2-inch strip and pushed behind the rubber seal and upward. I have not used the air conditioner for over a month.

I think it is condensation from behind the fiberglass cap. If I don't wick it up, it will drip onto the leather and wet the drapes. At most, it is about 1-2 tablespoons forming a puddle on each side of the dash. By mid-morning if do not use the paper towels, the drip stops.

It stopped raining several days ago, it rained for three days, and the drip did not occur. The drip also did not occur during the hot summer months.

What do you all think?
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Old 10-17-2011, 06:49 AM   #2
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We occasionally have the same problem. In our situation if we leave one of the overhead cabinet doors open over the dash we have enough air circulation to eliminate the front cap sweating problem.
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Old 10-17-2011, 06:41 PM   #3
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WOW, it is normal? I do not have that option. The Ace has a bed that comes down from the ceiling. The back of the bed had storage pockets without any direct contact with the cap void. With the bed stowed, additional pieces of wood and hinges cover the area doubling the width. Perhaps if I install a fan and port 1-inch holes at each end to suck and pull fresh air circulation?
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Old 10-18-2011, 04:02 AM   #4
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Quote:
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WOW, it is normal? I do not have that option. The Ace has a bed that comes down from the ceiling. The back of the bed had storage pockets without any direct contact with the cap void. With the bed stowed, additional pieces of wood and hinges cover the area doubling the width. Perhaps if I install a fan and port 1-inch holes at each end to suck and pull fresh air circulation?
Don't know about normal but it is the problem we had until we allowed air circulation thru slightly opening the cabinet door. Spent a lot of time looking for a leak first before someone suggested trying air circulation which solved our problem. It was only a problem when there was a temperature difference with warm inside and cool outside. Just a vent hole on each side might solve the problem. Small vent covers are available at home improvement stores.
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Old 10-18-2011, 04:14 AM   #5
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You might want to either run a dehumidifier or open up one of your roof vents and let the fan's pull out some of the moisture in the air. That may help and I'm not an expert on the subject, just a friend with some advice as to what we did that seemed to help out.
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Old 10-18-2011, 06:15 AM   #6
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TY, yes I've thought about a dehumidifier. I bought a space heater for the cabin area that is keeping some condensation from forming on the windows and it lessens the problem. You are probably right about the dehumidifier - that is next weekend's purchase. After all this is the mossy roof area of the country - it may not get subzero, but the moisture never goes away.
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Old 11-02-2011, 04:07 AM   #7
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Quote:
Originally Posted by ShadowT View Post
It is getting cooler in the Seattle area. Condensation on the ACE cab windows are a daily happening. I have a drip on both sides of the dash coming off the rubber flap next to the top of the window. It is enough to wet two paper towels folded into a 2-inch strip and pushed behind the rubber seal and upward. I have not used the air conditioner for over a month.

I think it is condensation from behind the fiberglass cap. If I don't wick it up, it will drip onto the leather and wet the drapes. At most, it is about 1-2 tablespoons forming a puddle on each side of the dash. By mid-morning if do not use the paper towels, the drip stops.

It stopped raining several days ago, it rained for three days, and the drip did not occur. The drip also did not occur during the hot summer months.

What do you all think?
I have an ACE also and recently have had the same problem. I also think that it is condensation coming from the front cap. I am calling Thor this morning to ask about it.
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Old 11-10-2011, 09:18 PM   #8
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ACE-condensation
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Old 11-15-2011, 11:33 AM   #9
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This happens to a lot of motorhomes usually bad insulation between the cap and cieling contribute but just to much moisture from condensation that forms at the temp breaks. Dehumidifier or more ventilation or both are usually the fix. Condensation is a big problem in all these rigs confined space,hot showers, cooking, and breathing. Most owners manuals address this
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Old 05-29-2012, 10:59 PM   #10
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I know I'm late to the game, but I had the same problem this last winter. I bugged Thor until they referred me to an RV repair shop who pulled out the panelling above the cabover bed to expose the cap. They added 4 inch thick batts of pink insulation and NO MORE DRIPS! Thor told me they were going to put out a service bulletin about this. If you have the problem and your dealer won't listen, call Pat Hurley at Thor. His direct number is 574-264-2900 x2074. Tell him you have the same problem as Bruce Dickson had last February. Give him the last 6 digits of my VIN number: A09234. He has all the records.
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Old 05-30-2012, 03:14 AM   #11
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I'm not an ACE owner but reading about the problem I hame a suggestion. If air circulation is needed and I agree it is then you could opt for one of the small computer fans like some people, me included, put in their refridgerator to keep ice build up from occuring. They are 12v, available all over the place, very quiet and they move a lot of air.
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