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11-02-2012, 10:16 PM
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![devilsfan's Avatar](image.php?u=2080&dateline=1147545560) |
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AC blowing hot air when off?
I had the main board replaced on my AC a few years ago. Lately, I noticed that when I turn the system off, it blows hot air through the vents. I have to turn it down to 60F, THEN turn it off to prevent this from happening. It never did this prior to the AC work. Thoughts?
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2003 yellow Lux, 12" Bulletproof lift, 42" Pitbull Rockers, 20" Ultra Predators, Corsa sport exhaust, painted interior
2004 Cadillac Escalade, white diamond, dual tip chrome exhaust, 20" chrome 9-spoke rims, altezzas - TOTALLED!!!! Replaced with a nondescript 2009 Chevy Tahoe
1970 VW Karmann Ghia, black with a flame job and too many mods to list
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![Old](images/statusicon/post_old.gif)
11-02-2012, 11:37 PM
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![[__--MUD--__]'s Avatar](image.php?u=8286&dateline=1300594796) |
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Re: AC blowing hot air when off?
Blend door actuator. Its what regulates the hot/cold air.
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![Old](images/statusicon/post_old.gif)
11-03-2012, 03:51 PM
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![devilsfan's Avatar](image.php?u=2080&dateline=1147545560) |
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Re: AC blowing hot air when off?
So I did some google on the blend door actuator....my system is running fine when it's on - keeps cold and hot no problem. The hot air only comes out when the system is turned OFF. If the actuator was bad, wouldn't the AC not run normally?
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2003 yellow Lux, 12" Bulletproof lift, 42" Pitbull Rockers, 20" Ultra Predators, Corsa sport exhaust, painted interior
2004 Cadillac Escalade, white diamond, dual tip chrome exhaust, 20" chrome 9-spoke rims, altezzas - TOTALLED!!!! Replaced with a nondescript 2009 Chevy Tahoe
1970 VW Karmann Ghia, black with a flame job and too many mods to list
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![Old](images/statusicon/post_old.gif)
11-03-2012, 06:22 PM
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![[__--MUD--__]'s Avatar](image.php?u=8286&dateline=1300594796) |
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Re: AC blowing hot air when off?
What are you calling "system"?? The entire hvac or just the ac unit?
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11-04-2012, 01:26 AM
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![devilsfan's Avatar](image.php?u=2080&dateline=1147545560) |
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Re: AC blowing hot air when off?
I guess the AC. Because if it blew hot air when the heat was on, then that wouldn't be a problem then, right? ![Smile](images/smilies/smile.gif)
__________________
2003 yellow Lux, 12" Bulletproof lift, 42" Pitbull Rockers, 20" Ultra Predators, Corsa sport exhaust, painted interior
2004 Cadillac Escalade, white diamond, dual tip chrome exhaust, 20" chrome 9-spoke rims, altezzas - TOTALLED!!!! Replaced with a nondescript 2009 Chevy Tahoe
1970 VW Karmann Ghia, black with a flame job and too many mods to list
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11-04-2012, 04:24 AM
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Re: AC blowing hot air when off?
Hopefully it's not the Blend door actuator ... I just replaced mine what a PAIN IN THE ARSE!!! It drove me NUTZ and cut my hands up!! It's a 10 on the SUCK Scale!!!
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11-05-2012, 02:26 PM
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Re: AC blowing hot air when off?
Quote:
Originally Posted by devilsfan
I had the main board replaced on my AC a few years ago. Lately, I noticed that when I turn the system off, it blows hot air through the vents. I have to turn it down to 60F, THEN turn it off to prevent this from happening. It never did this prior to the AC work. Thoughts?
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Mine has always done this...whatever my last HVAC setting was (temperature and output vent), once I turn it off it still blows; just a little bit. Every other aspect of the HVAC seems to work fine...
I simply got in the habit of changing the output vent to the defroster before shutting it off.
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11-07-2012, 10:45 PM
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![LoJac963's Avatar](image.php?u=13990&dateline=1446270291) |
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Re: AC blowing hot air when off?
mine does the same thing when turned off, it seems like the vent kicks open and lets the hot air through the vents. I don't think you can turn on recirc without the system on?
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![Old](images/statusicon/post_old.gif)
11-07-2012, 11:37 PM
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![devilsfan's Avatar](image.php?u=2080&dateline=1147545560) |
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Re: AC blowing hot air when off?
Well, glad to see it's a common problem. It's not worth me paying out of pocket for at the dealership, that's for sure. I'm going to start trying the defrost setting trick, that sounds like a really good solution.
__________________
2003 yellow Lux, 12" Bulletproof lift, 42" Pitbull Rockers, 20" Ultra Predators, Corsa sport exhaust, painted interior
2004 Cadillac Escalade, white diamond, dual tip chrome exhaust, 20" chrome 9-spoke rims, altezzas - TOTALLED!!!! Replaced with a nondescript 2009 Chevy Tahoe
1970 VW Karmann Ghia, black with a flame job and too many mods to list
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