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Old 08-18-2011, 10:15 PM   #1
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2 Low Fan/ AC Settings

Why are there 2 setting on the fan a/c knob marked as 'Low"? Is there supposed to be different fan speeds? Our runs the same no mater which 'Low' setting you have it on..
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Old 08-18-2011, 10:27 PM   #2
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Mine is the same way - it "appears" to be the same, but supposedly it is slightly different - but I can't tell the difference. I like the airflow, so I leave mine on high all the time.
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Old 08-19-2011, 07:12 AM   #3
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I can hear the difference on mine between low and high.
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Old 08-19-2011, 07:30 AM   #4
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Quote:
Originally Posted by wb2nco View Post
Why are there 2 setting on the fan a/c knob marked as 'Low"? Is there supposed to be different fan speeds? Our runs the same no mater which 'Low' setting you have it on..
I've been wondering the same thing. My new 2012 is that way, as is my brothers 10 year old Jayco pop up.


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Old 08-19-2011, 09:07 AM   #5
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On my thermostat (Coleman Mach) there's High and Low for the "AUTO" setting (fan only comes on when AC runs) and a High and Low for the "ON" setting (where fan runs constantly when in AC mode). Are those the two "Low" settings you're talking about?
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Old 08-19-2011, 11:16 AM   #6
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I dont know if it has to do with being ducted, but I just cant tell the difference no matter what I did. I though at first there was something wrong with my unit, but then I talked to some forum folks and saw other units and they were the same. I have another vehicle with a non-ducted and it is pretty obvious going from high-low.

This is just me, but I like the airflow anyway and dont see that much benefit to a low setting with a ducted system - it is already pretty quiet as it is.
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Old 08-21-2011, 02:26 AM   #7
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on mine there is the fan high/low and then a fan switch for on/auto high/low.
the first one runs the fan of the ac unit on the roof. The on/auto switch is the fan switch for the furnace
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Old 08-21-2011, 08:19 PM   #8
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This is just a guess...so bear with me. Some AC units are actually heat pump types of units, capable of providing either cooling, or heat. Might it be possible that the other "low" setting" would be used for heat, if the model were so equipped?
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Old 08-22-2011, 05:18 PM   #9
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My Coleman Mach is the same way. Low fan, low fan, high fan, low cool, high cool. Most likely Coleman had a bunch of 5 position switches and just used them to get rid of them. Probably thought those stupid campers will never know the difference.

We sure showed them didn't we??

I also thought that maybe one of the fan settings was for a unit that might have an electric heating element in it. My manual doesn't really explain it.

Disclaimer: I know that none of us are stupid. Please take no offense as none was intended. Sarcasm on the other hand was intended.
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Old 08-23-2011, 07:24 PM   #10
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replace your thermostat with a digital one and you'll be happy with the consistent operation.
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