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Old 01-20-2014, 07:17 PM   #1
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Furnace Operation

There is probably a simple reason but I have not figured it out yet. We are testing out our Forester 2251LE and when running the heater, the blower fan from the AC unit (above) activates. The heater unit is working as we have heat coming from the floor area but I don't know why the blower fan from the AC unit runs. Is it supposed to or are we running improperly?
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Old 01-20-2014, 07:43 PM   #2
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You need to set the fan control on the thermostat to Auto instead of Hi or Low.

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Old 01-20-2014, 07:49 PM   #3
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Furnace Operation

It's just as David said.

You can go to the Sunseeker forum, look for a thread updated on 11/14/12, entitled something like "AC fan runs when furnace is on" for additional info about this exact thing.
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Old 01-21-2014, 06:50 AM   #4
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Originally Posted by Dave_Monica View Post
You need to set the fan control on the thermostat to Auto instead of Hi or Low.

Dave

To elaborate a little...Use the on/off setting on your thermostat to highlight the "fan" setting. You will find the display showing "HI" or "LO". Use the + or - keys to change to "AU" (Auto). Now use the on/off setting to move to furnace and set temperature as desired. When the furnace turns on you will no longer have the AC fan running--just the furnace fan.
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Old 01-21-2014, 08:12 AM   #5
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On the flip, side, I could see that it might be useful to let the fan on (not on auto but on hi and lo) in some cases....it might help to push some of the heat up near the ceiling down...sort of like running a ceiling fan in the winter.

Of course, you'd want to have electrical hookups to do so...
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Old 01-21-2014, 09:28 AM   #6
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Thank you

Thanks, yes makes sense. Did what you suggested and it worked....
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Old 01-31-2014, 02:43 AM   #7
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We always left the blower on, at night anyway. 1, for the noise and 2 to circulate the heat around a little. Some of our previous units wouldn't let the roof fan run with furnace on, so I consider it a bonus.
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Old 01-31-2014, 08:18 AM   #8
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We always left the blower on, at night anyway. 1, for the noise and 2 to circulate the heat around a little. Some of our previous units wouldn't let the roof fan run with furnace on, so I consider it a bonus.
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