Thread Tools Search this Thread Display Modes
Old 10-30-2015, 08:21 AM   #1
1 Rivet Member

Hickory , North Carolina
Join Date: Feb 2015
Posts: 15
Problem with dash AC / Heat controls

Time to draw from the knowledge base here. Hopefully someone can help me. The dash heating / air conditioning controls in my 2003 Airstream Land Yacht has stopped functioning. I have attached two pictures, one of the front of the control module and one of the back of the control. The vaccuum works fine, just no power to both the fan control and the selector switch.

I have checked all the fuses, replaced the relay in the fuse box in the engine compartment and still no power to the control module.

Any one have this problem before and can point me in the correct direction to something I have missed.

Any help would be greatly appreciated.Click image for larger version

Name:	image.jpg
Views:	85
Size:	360.8 KB
ID:	251360

rrzasa is offline   Reply With Quote
Old 10-30-2015, 08:23 AM   #2
1 Rivet Member

Hickory , North Carolina
Join Date: Feb 2015
Posts: 15
2nd image

Click image for larger version

Name:	image.jpg
Views:	77
Size:	409.4 KB
ID:	251361

rrzasa is offline   Reply With Quote
Old 12-09-2015, 12:55 PM   #3
1 Rivet Member

Hickory , North Carolina
Join Date: Feb 2015
Posts: 15
Anyone have any ideas for me? Still coming up empty in my search under the hood.
rrzasa is offline   Reply With Quote
Old 12-09-2015, 03:26 PM   #4
Rivet Master
jm2's Avatar
2002 25' Safari
1977 20' Argosy 20
northern valley , new jersey
Join Date: Nov 2008
Posts: 510
Originally Posted by rrzasa View Post

I have checked all the fuses,

Attachment 251360

I would test the fuse(s) with a meter, and then, if accessible, verify that power is leaving the back of the fuse block. if power is leaving ok, can you trace the wire from the block to the control?

do you have a schematic drawing to refer to?

Joseph & Gabrielle

Simplicity is the ultimate sophistication - Leonardo da Vinci.

WBCCI 2087 - AIR 3144 - TAC-NJ2
jm2 is offline   Reply With Quote
Old 12-09-2015, 07:24 PM   #5
4 Rivet Member
Paul Dobbin's Avatar
1994 35' Land Yacht Diesel
Franklin NC , North Carolina
Join Date: Dec 2004
Posts: 269
I had a similar problem in our older Land Yacht DP. However the A/C control module was a mechanical sliding arm set up. I went to a junk yard and found a similar unit in a 80's MOPAR car and replaced it.
Then I had the same problem in my 81 El Camino and found it was the vacuum module itself that was leaking an not switching the little heater doors open or closed completely.
The vacuum control module was a plastic ball about 2" round with about 8 vacuum outlets with hoses to the heat & A/C valves. A new one fixed the problem.
For what it's worth, it's a place to look.
"The Roadhouse" our Land Yachts name
Paul Dobbin is offline   Reply With Quote
Old 12-29-2015, 02:19 PM   #6
3 Rivet Member
2000 31' Excella
Ontario , Canada
Join Date: Feb 2010
Posts: 166
I have the same set of controls in my 2005.
Have these controls ever worked and then quit while you owned it?

as an aside, many owners have found that the vacuum hose that runs to the heat exchanger under the hood has developed holes or just plain rotted away. also vacuum hoses under dash curbside to roadside.

the only problem that I had with the switches was the 4th speed not working. replaced fuse in the engine compartment.

sounds to me like a no power situation.
I know that you have checked your fuses but in all 4 locations? Suggest that you try to verify if power is coming into the switches.
Is the ignition on? Fan will only work with selector in other than off. power at fan?

starting point only. Woody
woodytwo is offline   Reply With Quote
Old 03-05-2016, 12:07 AM   #7
1 Rivet Member

Hickory , North Carolina
Join Date: Feb 2015
Posts: 15

After two trips to two different RV repair shops, still not working. Paid almost $ 500.00 to tell me that Airstream has no schematics for my 2003 LY and save tearing the whole dash apart, there is no way to find the loose connection or cold solder joint.

The last service center told me that if they connect power directly to the two pink wires, then the control works but they cannot tear into the dash without the prints.

I think I may just run a line from the fuse box directly to those two pink lines and see if that will be a fix.

Anyone "Hot wired" their Heat/Ac controls before?
rrzasa is offline   Reply With Quote
Old 03-05-2016, 08:11 AM   #8
Agent 86
J. Morgan's Avatar
1972 31' Sovereign
1975 31' Excella 500
Currently Looking...
Benton , Arkansas
Join Date: Mar 2013
Posts: 4,356
Images: 11
Problem with dash AC / Heat controls

What brand is the chassis? What make did that dash control panel come from?

You might find an answer on a Ford forum or a Chevy forum, etc.

I am thinking that it is very possible that there is another relay somewhere, that might not be with the others.

You could hot wire it in a pinch, if you do make sure you use a source switched by ignition and fused.

If I was going to do that I would come off of the battery or main junction center with two circuits each with an inline fuse immediately. I would run these to very near your splice in point where I would place two relays, one for each circuit.

I would switch the relay with an ignition source.

I would go to this trouble for a couple of reasons. The climate control system draws a lot of current. You do not want to piggy back this draw on another circuit.

The second reason is that should you ever find the real problem, this add on will be easy to remove with only A MINIMUM "unhacking" of the original circuit(s).

Talis gentium ceciderunt.
The fact that I am opinionated does not presuppose that I am wrong......

J. Morgan is online now   Reply With Quote
Old 03-06-2016, 05:24 PM   #9
3 Rivet Member
2000 31' Excella
Ontario , Canada
Join Date: Feb 2010
Posts: 166
OK $500. is big bucks.
Did you check out the suggestions that I suggested previously and if so what were the results? there are 4 fuse locations. one under dash driver's side. second and third in exterior storage compartment on driver's side. fourth in the engine compartment driver's side. and there is also a fuse inline from the battery to the heater controls in the engine compartment. did you use a meter when you checked each of these locations to see if you had power.? this is not rocket science. let me know what you found. lastly the wiring diagram that most of us have found useful is the same as the gmc/chevy 2500 or 3500 pickup trucks.
woodytwo is offline   Reply With Quote
Old 04-04-2016, 11:11 AM   #10
sneaky's Avatar
Currently Looking...
2002 31' Land Yacht 30
Indian River , Michigan
Join Date: Aug 2015
Posts: 2
I have a 2002 Land Yacht, I will be gettting it out of storage in the next week or so and can look through all my manuals to see if I can find the schematic. I know there are several there, just not sure for what systems. If it helps. Ask me in a week to remind me.
sneaky is offline   Reply With Quote
Old 04-06-2016, 02:58 PM   #11
3 Rivet Member
garypk's Avatar
1998 31' Land Yacht
lafayette , Colorado
Join Date: Jul 2012
Posts: 127
If you dont find freebies you can buy schematics here
that is assuming you are on a 8.1L Workhorse chassis

We call ours "Ship Of Fools"
garypk is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
1995 36 classic dash heat rw1895 Mechanics Corner - Engines, Transmission & More... 13 10-19-2013 01:07 PM
Dash blower motor heat/air James Rogers Classic Motorhomes 11 10-30-2010 07:29 AM
Parts Needed - Dashboard AC/Heat Controls - 1986 325 CoolHandLuke Furnaces, Heaters, Fireplaces & Air Conditioning 3 07-28-2010 12:16 PM
Dash Heat & Air Switch and Vacumn Lines spat61 Airstream Motorhome Forums 1 08-25-2009 07:19 PM
Ac/heater Controls In Dash mlmarch Classic Motorhomes 4 02-19-2007 02:13 PM

Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 06:00 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.