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03-21-2008, 04:08 AM
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#1
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Senior Member
Fleetwood Owners Club
Join Date: Feb 2008
Location: Charlotte N.C.
Posts: 104
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Air will not change from defrost to dash or floor Need advise 05 adventure on w 24 chassie
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Viet_Vet American Tradition Jeep Toad
D W Mary Dog Casper Cat Prince
All Gave Some Some Gave All Thank A Vet 
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03-21-2008, 04:08 AM
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#2
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Senior Member
Fleetwood Owners Club
Join Date: Feb 2008
Location: Charlotte N.C.
Posts: 104
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Air will not change from defrost to dash or floor Need advise 05 adventure on w 24 chassie
__________________
Viet_Vet American Tradition Jeep Toad
D W Mary Dog Casper Cat Prince
All Gave Some Some Gave All Thank A Vet
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03-21-2008, 06:18 AM
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#3
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Senior Member
Winnebago Owners Club
Join Date: Jun 2004
Location: SW Florida
Posts: 880
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It takes vacuum to change the airflow vents. Most systems, I suppose for safety reasons, default to defrost when there is no vacuum available. You might try to find a loose vacuum hose "under the hood". Sorry I can't tell you where to look, but maybe someone with a WH chassis will checkin soon. Good luck...
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Tom
'04 Journey 36G - Cat C7
'04 Honda CR-V
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03-21-2008, 09:22 AM
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#4
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Senior Member
Appalachian Campers Pond Piggies Club Winnebago Owners Club Mid Atlantic Campers
Join Date: Dec 2002
Location: Sarver, PA/Crystal River, FL/Hawthorn, PA
Posts: 3,778
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Below is a link to the Vacuum and Electrical Diagrams for your dash heating and AC controls. With these diagrams you'll be able to diagnosis and fix your problem.
http://www.winnebagoind.com/resources/service/pdfs/2005...Heating%20&%20AC.pdf
-Tom
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Sarver, PA/Crystal River, FL/Hawthorn, PA · FMCA 335149 · W3TLN 2005 Suncruiser 38R · W24, no chassis mods needed · 2012 Honda Accord SE · 2008 Honda Odyssey EX-L
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03-21-2008, 10:16 AM
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#5
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Senior Member
Join Date: Feb 2006
Location: Kalamazoo, Michigan
Posts: 710
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There are also vacuum lines running to the rear of the dash switch assembly. Check behind the switch to make sure all the vacuum connections are firmly attached.
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Tom and Barb
'07 Winnebago Voyage 35L
Workhorse W22 chassis
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03-21-2008, 10:42 AM
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#6
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Senior Member
Appalachian Campers Pond Piggies Club Winnebago Owners Club Mid Atlantic Campers
Join Date: Dec 2002
Location: Sarver, PA/Crystal River, FL/Hawthorn, PA
Posts: 3,778
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Lots of Toms here.
-Tom
__________________
Sarver, PA/Crystal River, FL/Hawthorn, PA · FMCA 335149 · W3TLN 2005 Suncruiser 38R · W24, no chassis mods needed · 2012 Honda Accord SE · 2008 Honda Odyssey EX-L
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03-22-2008, 06:06 AM
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#7
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Senior Member
Join Date: Oct 2003
Posts: 349
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Open hood and look for the green vacuum wire or hose that connects to the valve assembly just to the right of the AC/Heater black plastic box mounted against the fire wall on the left (facing) side of the coach....This green vacuum hose is attached to the valve with a small section of windshield hose....The purpose of this valve is to open the various air passages into the coach vents....When it loses vacuum thru a leak, the control box defualts to defrost only.
You can test the green vacuum line connection by pulling out the green hose and putting your finger over the end...If the vacuum motor stops humming (engine must be on), this is the problem......Replace with a new piece of windshield hose....If this is not the problem, start at the vacuum motor and start disconnecting and plugging the rubber lines until it stops running...just follow the lines and plug each joint..good luck...RKL
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03-22-2008, 06:25 AM
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#8
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Senior Member
Workhorse Chassis Owner
Join Date: Apr 2005
Location: CA
Posts: 323
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Tom N:
Lots of Toms here.
-Tom </div></BLOCKQUOTE>
Does that mean this is now a Tom Tom site?
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04 Winnebago Adventurer 38R
Workhorse W22
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03-25-2008, 05:38 AM
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#9
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Senior Member
Fleetwood Owners Club
Join Date: Feb 2008
Location: Charlotte N.C.
Posts: 104
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Thanks so much for the replies I will check it out this week end. 
__________________
Viet_Vet American Tradition Jeep Toad
D W Mary Dog Casper Cat Prince
All Gave Some Some Gave All Thank A Vet
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