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Old 02-17-2019, 10:35 PM   #10
LHaven
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Join Date: Feb 2019
Location: Wickenburg
Posts: 3,270
What has to be replaced is the HVAC gateway.It's a discrete box that hangs right in the center of the AC cavity, which you can see with the filter cover removed.

There are serial and model numbers on top where they can't be easily read, but I took a photo of them using my smartphone in selfie mode. It's a Dometic product. The numbers on my original component were marked as part #3313191.000.

When I put my repair through the dealer, there was a delay because the various part and serial numbers I reported weren't part of the range authorized by the original service bulletin, but it was verified that my parts failed the same way, so now I presume they are.
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