AC turns on and blows somewhere

jdgonzalez · 12-23-2016, 09:26 PM

I had an issue today on my way back home from my parents house. The AC stopped working but not in that the temperature changed. The AC just stopped blowing air (hot or cold). I could some very faint coolness coming out of the vent (and yes the vent was open). The weird thing was that i could her something being blown around it just wasn't coming out of any of the vents. Once I got home I went out to eat in my wife's car and when I came back, I powered on the car and the AC was blowing normally.

I saw a few points where other members posted the same symptoms but I didn't find anything that pointed to why this happened. Anybody have any thoughts? Is there some sort of switch that regulates the air that comes out of the blower? Very odd. I hope it doesn't happen again.

J.D.

RedKloud · 12-23-2016, 11:20 PM

Why are you using the AC in December?

eluded · 12-24-2016, 02:11 AM

My climate control system is also possessed by German engineers. I think this behavior is normal.

HighlandPete · 12-24-2016, 05:06 AM

Quote:

Originally Posted by RedKloud

Why are you using the AC in December?

AC is not just for summer.

It is climate control... I use mine all year. Dehumidifies this time of the year, prevents misting, keeps the cabin dry. As essential for me in the winter, as cooling in summer months.

HighlandPete · 12-24-2016, 05:08 AM

Quote:

Originally Posted by eluded

My climate control system is also possessed by German engineers. I think this behavior is normal.

Seems to be a 3/4 series thing. Must say my 5-series climate control is faultless in operation, in all conditions.

jdgonzalez · 12-24-2016, 09:26 AM

Quote:

Originally Posted by RedKloud

Why are you using the AC in December?

I live in Texas

It was 80 degrees yesterday.

Bob in IL · 12-24-2016, 10:31 AM

When in "Auto" mode most modern HVAC systems will cycle the AC on and off as needed and as mentioned regardless of the outside temp.

Blubaron79 · 12-24-2016, 10:36 AM

It's a known issue with 2015s. The condenser gets too cold and freezes up. Take it to the dealer. It's an evaporative sensor issue.

RoundelM3 · 12-24-2016, 11:08 AM

^ This - had same issue on my 2013 335i.

jdgonzalez · 12-24-2016, 11:23 AM

Quote:

Originally Posted by Blubaron79

It's a known issue with 2015s. The condenser gets too cold and freezes up. Take it to the dealer. It's an evaporative sensor issue.

Thanks. I'll have to research this some more. I guess what has me a bit confused is that it was a very mild day I had the temp set at around 75 or so and it wasn't that the air was hot or cold. It was that there was NO air coming out of the vents but I could hear the blower (I think that's what it's called). It was as if I had the vents closed except that they weren't.

Some posts that I read say that it happened to them once and never appeared again. I'm really hoping that's the case.

COKen · 12-24-2016, 11:29 AM

Did you check your floor vents? It is possible that, for some reason, your car decided that all of the flow needed to go to the floor vents for a period of time.

Almaretto · 12-26-2016, 02:28 AM

Were you by any chance in EcoPro? HVAC is sensitive to drive mode.

It has been in the mid 60s during the day and 40s at night recently and I still use A/C just for circulation.

12-23-2016, 09:26 PM	#1
jdgonzalez Master Bacon Eater 39 Rep 65 Posts Drives: 2015 328i Join Date: Aug 2013 Location: Cedar Park iTrader: (0)	AC turns on and blows somewhere I had an issue today on my way back home from my parents house. The AC stopped working but not in that the temperature changed. The AC just stopped blowing air (hot or cold). I could some very faint coolness coming out of the vent (and yes the vent was open). The weird thing was that i could her something being blown around it just wasn't coming out of any of the vents. Once I got home I went out to eat in my wife's car and when I came back, I powered on the car and the AC was blowing normally. I saw a few points where other members posted the same symptoms but I didn't find anything that pointed to why this happened. Anybody have any thoughts? Is there some sort of switch that regulates the air that comes out of the blower? Very odd. I hope it doesn't happen again. J.D.
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12-23-2016, 11:20 PM	#2
RedKloud Major 737 Rep 1,261 Posts Drives: BMW i4 M50 Join Date: Jan 2016 Location: Portland, OR iTrader: (0)	Why are you using the AC in December?
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12-24-2016, 02:11 AM	#3
eluded 2JZ-GTE 3049 Rep 4,002 Posts Drives: 340 6MT, 50e, others Join Date: Nov 2015 Location: Sofia iTrader: (0)	My climate control system is also possessed by German engineers. I think this behavior is normal. __________________ A man who views the world the same at 50 as he did at 20 has wasted 30 years of his life.
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12-24-2016, 10:31 AM	#7
Bob in IL Captain 791 Rep 998 Posts Drives: 2024 G01 X3, 2019 G30 5 Series Join Date: Oct 2015 Location: Chicago area iTrader: (0)	When in "Auto" mode most modern HVAC systems will cycle the AC on and off as needed and as mentioned regardless of the outside temp.
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12-24-2016, 10:36 AM	#8
Blubaron79 Brigadier General 1435 Rep 4,724 Posts Drives: 2021 M340i xDrive Join Date: May 2009 Location: PA iTrader: (0)	It's a known issue with 2015s. The condenser gets too cold and freezes up. Take it to the dealer. It's an evaporative sensor issue. __________________ Current: 2021 M340i xDrive Previous: '18 340i xDrive; '15 335 xDrive; '14 435i xDrive; '09 335 E92 xDrive
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12-24-2016, 11:08 AM	#9
RoundelM3 Major General 1837 Rep 6,990 Posts Drives: 15 F80 M3, 22 G01 X3 30i Join Date: Apr 2010 Location: Clayton, NC iTrader: (2) Garage List 2022 BMW X3 [9.83] 2015 BMW M3 [6.50]	^ This - had same issue on my 2013 335i. __________________ 2015 F80 ///M3 Sedan 7DCT Tanzanite, 2022 X3 sDrive30i 8AT Brooklyn Grey
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12-24-2016, 11:29 AM	#11
COKen Lieutenant Colonel 981 Rep 1,560 Posts Drives: M Rster / Z4 M40i / X5 M50i Join Date: Dec 2013 Location: Colorado iTrader: (0)	Did you check your floor vents? It is possible that, for some reason, your car decided that all of the flow needed to go to the floor vents for a period of time. __________________ 2002 M Roadster, Steel Gray Metailic, Gray Nappa Leather, HT, TC Kline DA Shocks & Camber Plates, w/H&R Springs, Stromung Exhaust, SSR Type C. Looking for new home. 2022 Z4 M40i, Misano Blue Metallic, Driver Asst Pkg, Prem Pkg 2023 X5 M50i, Phytonic Blue, Black Extended Merion Leather, Driving Asst Pro Pkg, Park Asst Pkg, Exec Pkg, Climate Comfort Pkg.
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12-26-2016, 02:28 AM	#12
Almaretto Major General 2374 Rep 8,364 Posts Drives: Test Vehicles Join Date: Dec 2015 Location: Mountain View, CA iTrader: (0)	Were you by any chance in EcoPro? HVAC is sensitive to drive mode. It has been in the mid 60s during the day and 40s at night recently and I still use A/C just for circulation.
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