AC blower fan comes on by itself.
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Joined: Feb 2015
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From: Eastman, Ga.
AC blower fan comes on by itself.
Can anyone tell me why my AC comes on all by itself? I will go outside and hear the AC blower fan running for no apparent reason. I naturally thought it was a feature to keep the inside cool but that can't be because there are days of heat that it's not doing it and days of lower temps that it is doing it.
And just to make it clear, I am referring to the inside of the car not the motor area and the car is turned off and no key in it.
And just to make it clear, I am referring to the inside of the car not the motor area and the car is turned off and no key in it.
Joined: Mar 2012
Posts: 4,759
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From: Hazlet Township, NJ
Can anyone tell me why my AC comes on all by itself? I will go outside and hear the AC blower fan running for no apparent reason. I naturally thought it was a feature to keep the inside cool but that can't be because there are days of heat that it's not doing it and days of lower temps that it is doing it.
And just to make it clear, I am referring to the inside of the car not the motor area and the car is turned off and no key in it.
And just to make it clear, I am referring to the inside of the car not the motor area and the car is turned off and no key in it.
Joined: Oct 2009
Posts: 11,057
Likes: 2,272
From: Perth Ontario Canada
And the cabin blower comes on by itself?
Have someone sit in the car to confirm. It might actually be the radiator cooling fan.
Have someone sit in the car to confirm. It might actually be the radiator cooling fan.
Joined: Oct 2009
Posts: 11,057
Likes: 2,272
From: Perth Ontario Canada
I've never once heard the cabin blower run under such conditions nor can I imagine how it would remove moisture or do anything else except run the battery down.
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Joined: Oct 2009
Posts: 11,057
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From: Perth Ontario Canada
OK, so it's normal for the car to do that.
The engine would not be running at the time so the AC compressor is not turning to either cool or dehumidify the cabin. So what does running the blower accomplish?
The engine would not be running at the time so the AC compressor is not turning to either cool or dehumidify the cabin. So what does running the blower accomplish?
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