Question about GE Zoneline AZ38H12DAD Split System Air Conditioner

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How to best run this thing

My mother has this unit in her "in-law suite" and she turns it to "low fan" at night.  We don't have the manual so I can't resolve our disagreement about how it works.  When the dial is on "fan" does it actually use the heat pump action to cool at times, too, or does it JUST blow air in from the outside without conditioning it in any way?  We all agree that if it was on "low cool" then it would be conditioning the air... Also, is it true that the best way to manage one of these units is to keep it at  a moderate temp all day (even if you are not home), rather than making it work hard at one point to get the temp back to where you want it?

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  • Anonymous Dec 22, 2008

    Greg, I have a brand new unit its been working fine every since i got it, wich has been about a year now . My problem is that it just recently startin leaking water towards the front of the unit. now this is a split unit. amadorofisraelyahoo.com

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Hi Laurelrobin,
When the unit is on "low fan", it is fan only, and is recirculating room air. If the damper is open, it can also bring in outside air. If the space is not occupied for extended periods, it's OK to turn the unit "OFF", as long as you have a newer unit with Heat Sentinel, and the Heat Sentinel is turned on. Heat Sentinel will not let the room temp get above 85F, as long as the unit is OFF. Also, in most cases it's best to keep the damper closed. You can check your owner's manual for more info on the Heat Sentinel and other auxiliary functions. I also have an article on the temperature limiting functions of the GE Zoneline.

Feel free to contact me at greg.mcnary(at)airdistributors.com if you need further info.

Greg McNary
Air Distributors Company, Inc.
Louisville, KY
Distributors for GE Zoneline PTAC Units, Zoneiare PTAC Units, and McQuay PTAC Units.

Posted on Aug 06, 2008

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Posted on Jan 02, 2017

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