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.
Hi Dwayne Hodge, I want to help you with your question, but I need more information from you. Can you please add details in the comment box? model #
serial #
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