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Old 08-25-2009, 06:41 PM   #1
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2003 31' Land Yacht 30
New Bern , North Carolina
Join Date: Aug 2007
Posts: 102
Dash Heat & Air Switch and Vacumn Lines

I have a 2003 Airstream LY 30' Gas. I'm getting ready to hit the road and discover no dash air/heat/defroster or fan will operate. I check all the under dash and under hood CB's. Under the hood I noticed the white vacumm line from the port on the back of the heater is completely dried up and split. It literally turned to dust. I understand that without this hose connected to the dash switch, the doors would not open/close properly, but I don't understand why the fan does not work on any speed.
I need some advice please.

I can live without A/C but I may need the blower to function for defroster air. Do I need to remove and replace the switch ? Thanks.
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Old 08-25-2009, 07:19 PM   #2

2003 25' Classic
Houstatlantavegas , Malebolgia
Join Date: Jun 2007
Posts: 19,793
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Workhorse chassis.... correct?

The symptoms usually start with the lower speeds not working, but I would check the blower speed resistor first.
"You don't know where you've been until you leave, enjoy life" RLC
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Old 08-04-2018, 12:52 PM   #3
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2004 30' Classic
2004 30' Land Yacht Gas 30
Lake Wales , Florida
Join Date: Aug 2018
Posts: 4
The blower speed resistor is located under the hood on the passenger side high up on the ac/heat case. You can get a new one at the auto parts store.
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