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Old 11-22-2020, 10:23 AM   #1
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2016 30' Classic
Rockbridge Baths , Virginia
Join Date: Apr 2015
Posts: 35
Furnace/AC issue

Any thoughts would be helpful. When I engage the furnace ( zone 1) which works fine the rear a/c fan (not the compressor) comes on. That should not happen. Ideas please.
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Old 11-22-2020, 10:32 AM   #2
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2019 25' Flying Cloud
Newmanstown , Pennsylvania
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Originally Posted by SC RVer View Post
Any thoughts would be helpful. When I engage the furnace ( zone 1) which works fine the rear a/c fan (not the compressor) comes on. That should not happen. Ideas please.
Try setting the fan speed to automatic.
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Old 11-22-2020, 11:44 AM   #3
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2016 30' Classic
Rockbridge Baths , Virginia
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Actually it was on auto. I never had this issue with my previous 2015 Classic. I just took delivery from a dealer Friday with a through PDI but I guess they didn't see the problem. I will contact them tomorrow for advice.
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Old 11-22-2020, 04:12 PM   #4
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Figured it out.
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Old 11-23-2020, 10:02 AM   #5
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Fix

What was the solution?
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Old 11-23-2020, 10:14 AM   #6
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Figured it out.
Great, think you might want to tell someone?
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Old 11-23-2020, 03:21 PM   #7
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2016 30' Classic
Rockbridge Baths , Virginia
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It was my forgetfulness that caused the problem. I had just taken delivery of the Classic and had forgotten the sequence of the Dometic thermostat. The dealer had done the PDI and when I first energized the thermostat it was already set on furnace on Zone 1 so I mistakenly assumed that Zone 2 would have been off. But that was not the case as I learned when I went back over the problem and discovered that Zone 2 was set as fan which was the problem. I cut Zone 2 off and all was well.
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Old 11-24-2020, 04:41 AM   #8
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Thank you. That was very helpful.
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Old 11-24-2020, 07:04 AM   #9
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Originally Posted by Jonmad View Post
Try setting the fan speed to automatic.
Thought so.
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