Snowflake (AC) light off, a/c still on

Discussion on Air Conditioning/Heat & electronic controls for the same, radiators/fans/engine cooling and related items.
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iefbr14
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Joined: Sun Oct 18, 2015 4:31 pm

Snowflake (AC) light off, a/c still on

Post by iefbr14 » Sun Dec 03, 2017 5:19 pm

Am I mis-reading the meaning of the light on the AC Control on a 2014?

Suppose I have the temp set at 68 and AUTO. The snowflake indicator is on, as is the distribution mode in effect. I decide to press the snowflake button, and it turns off.

Cold air continues to blow...and it's not the residual cold air left in the ducts. AC continues to blow when with the AC light now off....more than what might be considered a time-delayed slow shutoff.

Am I incorrect to assume the light is basically in series with the AC compressor? ON means compressor engaged; OFF means compressor not engaged.

I find compressor stays engaged after I commanded it to be OFF.

kevink
Posts: 381
Joined: Sun Aug 09, 2015 5:55 pm

Re: Snowflake (AC) light off, a/c still on

Post by kevink » Sun Dec 03, 2017 7:09 pm

Does it do the same thing when it's not on auto?

s/c'd cav
Posts: 727
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Re: Snowflake (AC) light off, a/c still on

Post by s/c'd cav » Tue Dec 05, 2017 6:52 am

look at the right on the screen , it will show auto , hit the button tell it cycles off

cerbomark
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Location: upstate NY

Re: Snowflake (AC) light off, a/c still on

Post by cerbomark » Sat May 25, 2019 10:50 pm

Did you ever figure this out, mine does same thing. Auto not engaged and snowflake not on and it continues to blow cold until I shut whole thing off and then back on (without AC). ??

update. I checked while parked with ac button on and then off and then compressor seems to respond as far as being fully engaged or not.
This is the strangest system I had. Other systems when you shut the Snowflake the air instantly looses the cold feel.
2016 C1

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Mooseman
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Re: Snowflake (AC) light off, a/c still on

Post by Mooseman » Sun May 26, 2019 12:46 am

If you have it to defrost or split defrost/feet, the A/C is always on to remove moisture except below freezing temps (which is useless/a waste 98% of the time). However, I also find it difficult to turn off A/C. And anytime I turn the system off and back on, the A/C is always turned back on no matter what the previous setting was.

I think it's a conspiracy to wear out A/C components faster to force owners to get them fixed more often. :o
2011 Caprice PPV, 1 of possibly 3 in Canada!
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cerbomark
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Location: upstate NY

Re: Snowflake (AC) light off, a/c still on

Post by cerbomark » Sun May 26, 2019 12:51 am

LOL, depending on whether I turn system on by pushing center button OR turning it (fan speed), one put s AC on and the other doesn't ..
Can t remember which one. So I m not the only one fighting this system.
2016 C1

CrashTestDummy
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Location: Pearland, Texas

Re: Snowflake (AC) light off, a/c still on

Post by CrashTestDummy » Mon May 27, 2019 3:08 pm

On our '12, the compressor turns off when I press the 'snowflake' button, but I can't tell you much about any other settings. Heck, I was surprised about the 'zone' settings just the other day. I was charging the A/C system and had a thermometer in the right center dash vent, and it kept reading 75-deg F while the air coming out the far left vent was pretty cold.

Anyway, on our '02 GMC 2500HD, if we have the recirculate button pressed, the compressor runs, even though the 'A/C' (snowflake) button is not. The light on the recirc button is on, but not on the A/C button. Just a data point, not sure if the Caprice HVAC behaves that way, or not.
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2012 Caprice 9C1
1992 B4C 1LE Camaro
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cerbomark
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Location: upstate NY

Re: Snowflake (AC) light off, a/c still on

Post by cerbomark » Tue May 28, 2019 3:55 pm

I checked the compressor and many would be surprised to note (as some have already stated). that even with the snowflake OFF the following conditions put the compressor ON.
Recirculate button ON, Settings where TOP (defrost) vent flow is ON. The snowflake does not lite up but compressor fully engaged , FYI.
2016 C1

SSpeedracer
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Re: Snowflake (AC) light off, a/c still on

Post by SSpeedracer » Wed May 29, 2019 3:19 am

The compressor does not turn off on my 16 when the Snowflake light is manually turned off until I cycle the fan off/on. I figure it's a bug.
2016 Caprice

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