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Old 01-06-2008, 06:09 PM   #7
LBJ
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Join Date: Jun 2007
Location: TEXAS
Posts: 378
Re: Heater and Vent Work, But not Defrost?

Well, there is an electrical switch position for Defrost. The other switch is really a slide that closes a door in the plenum and regulates the temp of the air. It's purely mechanical. I have to wonder about that switch and if it is somehow faulty.
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