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TDsngumbo
USA Fan
Member since Oct 2011
17510 posts
 Online 

My AC is coming on and off by itself with thermostat turned off
WTF is happening?


notsince98
Missouri Fan
KC, MO
Member since Oct 2012
10560 posts

re: My AC is coming on and off by itself with thermostat turned off
maybe you have a ventilation setting? Is the outdoor unit coming on or just the indoor blower?


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BallsEleven
LSU Fan
Member since Mar 2019
462 posts
 Online 

re: My AC is coming on and off by itself with thermostat turned off
Like the poster said it’s probably some setting where the blower kicks on but not the ac.

Mine is called auto-circulate. I have it run when we crank the ac up while away from the house just to move air around. It comes on every 30 minutes or so. I like it a lot.


TDsngumbo
USA Fan
Member since Oct 2011
17510 posts
 Online 

re: My AC is coming on and off by itself with thermostat turned off
Yep, after I started this thread I noticed my kid turned the fan on “auto” on the app.

I’m an idiot!


MisslePig
Arkansas Fan
Member since Jul 2018
610 posts

re: My AC is coming on and off by itself with thermostat turned off
Should you NOT have it on auto?

Should it be off?


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CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
674 posts
 Online 

re: My AC is coming on and off by itself with thermostat turned off
quote:

Yep, after I started this thread I noticed my kid turned the fan on “auto” on the app. I’m an idiot!

Where are you living that you don’t need to have your thermostat turned on this time of the year? Maybe I need to move there.
This post was edited on 8/13 at 11:27 am


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CarRamrod
USA Fan
Spurbury, VT
Member since Dec 2006
48850 posts

re: My AC is coming on and off by itself with thermostat turned off
quote:

I’m an idiot!

yep


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01
Lambdatiger1989
LSU Fan
NOLA
Member since Jan 2012
1646 posts

re: My AC is coming on and off by itself with thermostat turned off
Ghosts??


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10
ADLSUNSU
LSU Fan
Baton Rouge
Member since Sep 2007
3497 posts

re: My AC is coming on and off by itself with thermostat turned off
is it a nest or other smart one? If you dont have a C wire installed it may not be getting enough power.
You can try to take it off and charge it for a while plugged into a charger or computer but for some reason its a common problem.

The on and off is the nest trying to charge itself (dont know the specifics) i had to deal with that recently. Got lucky and the C wire had been run but not hooked up and it was sort of obvious where to connect it on the unit in the attic but i would do my due diligence.


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birchbayduck
Oregon Fan
Birch Bay, Washington
Member since Jul 2019
304 posts
 Online 

re: My AC is coming on and off by itself with thermostat turned off
Check to make sure your outside unit doesn't have a wire making contact on the outside unit..pull off the outer cover of the unit and check...that happened to me. Also check to make sure your outside unit is cleaned out.


Kingpenm3
McNeese State Fan
Xanadu
Member since Aug 2011
6912 posts
 Online 

re: My AC is coming on and off by itself with thermostat turned off
Many new thermostats have a humidistat as well, and will run based on just humidity levels. Mine will actually take the temperature up to 3 degrees past (lower) than the thermostat setting to handle humidity if it needs to.



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