foggy humid wet windows

[Ralph L. Fullenwider]

This is an '88 PT and the controls for the dash air and defrost is separate
systems I believe. The common AC/Heat control was not introduced until the
'90's Coach's. But I could be mistaken on this point.

So warm air inside, glass (inside) cold equals moisture on the inside glass
and fog. So if the glass (inside) is warmer than the cold out side, the
moisture forms on the out side. I have not thought about this since high
school. lol

Is the defrost switch on the lower dash with a front heat on/off switch? I
know the defrost in my FC barely stems the tide of fog on the drivers side,
and not very good until the inside of the windshield warms up. I have
helped it out by switching on the Coach air, fan only, on the overhead to
assist the air moving.

Safe travels,

Ralph and Charolette Fullenwider
"84FC35 "Ruff Diamond"
Duncan, Oklahoma

At 12:09 PM 2/5/2010 -0500, you wrote:


>Markus is asking you the right question. My understanding is that the
>defrost/defog setting should activate the dash a/c compressor to
>de-humidify the air.
>Elliot
>1995 WLWB 40
>RARA AVIS
>NW ILLINOIS
>
>
>
>-----Original Message-----
>From: Markus Meyer
>To: wanderlodgeforum@yahoogroups.com
>Sent: Fri, Feb 5, 2010 10:51 am
>Subject: RE: [WanderlodgeForum] foggy humid wet windows
>
>
>Is your dash air working? The a/c is used with the defroster so if its
>not working, the defrost won't work as well in humid conditions.
>
>Markus
>
>
>----------
>To: WanderlodgeForum@yahoogroups.com
>From: patty_austin@...
>Date: Fri, 5 Feb 2010 16:41:01 +0000
>Subject: [WanderlodgeForum] foggy humid wet windows
>
>
>Can anyone help us? Everytime we hit rain the windshield fogs so badly the
>coach is undrivable. We wipe them down, the defroster is on (does not
>help). Seems the only thing that improves the condition is to turn the
>airconditioners on all around to a popcicle temperature and freeze but hey
>the windshield is clear. I cant believe they made the coach to run this
>way, it must be some settings that we are overlooking. Anyone experience
>this and find out how to correct it? It is just so annoying and time consuming.
>
>Thanks in advance for anything that could help us out,
>Patty Austin
>88 wanderlodge PT40
>Tampa FL
>
>
>