Re: a/c malfunctions only on very hot days - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: a/c malfunctions only on very hot days
Posted by Dean (more from Dean) on Tue, 7 Nov 2000 16:38:15
In Reply to: a/c malfunctions only on very hot days, Rob B, Tue, 7 Nov 2000 16:25:53
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There is a history of the anti frost switch in the evaporator section failing, which leads to the compressor overheating. Then the overheat switch turns things off as you observed. And the overheat switch will fail, as it was not engineering for continous use.
In hot weather, the cooling demand will keep the compressor running long enough that the frosting can occur, as the evaporator gets colder than it is meant to. I wonder if frost can build up and crack the air box?
I think that there may also have been a servive bulletin on this problem.
Where are you that you still get hot weather?
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