HVAC fan adjustment, is slow to respond normal?

SS 1LE · 01-12-2017, 09:35 AM

I notice when I turn the dial to make the fan speed higher or lower it seems to take a few seconds before the speed changes. The digital readout above the dial changes right away, as does the pop up on the main screen. Just seems to take a couple seconds if I say change the fan speed from one bar, to say four bars (on that small digital readout). It's not a big deal, it's just not instantaneous like my other car. I was just curious if this normal?

ctrlz · 01-12-2017, 10:18 AM

I have not tried it but suspect it is normal. The fan motor probably has PWM speed control. Turning the dial is probably just sending a digital signal to the speed control module. The speed at which the ramping up and slowing down occurs is preset in the module. My guesses.

SS 1LE · 01-12-2017, 10:20 AM

Quote:

Originally Posted by ctrlz

I have not tried it but suspect it is normal. The fan motor probably has PWM speed control. Turning the dial is probably just sending a digital signal to the speed control module. The speed at which the ramping up and slowing down occurs is preset in the module. My guesses.

I was thinking it was something like that too, just want to make sure they are all like this.

SSport16 · 01-12-2017, 10:25 AM

it is normal, or at least in GM vehicles...My SRX does the same thing, take a sec to adjust higher or lower.

BradfordCamaro · 01-12-2017, 11:06 AM

Yup. Normal.

SS 1LE · 01-12-2017, 11:20 AM

Cool, thanks fellas.

01-12-2017, 09:35 AM	#1
SS 1LE マスタング = 遅い Drives: 2017 Chevrolet Camaro SS 1LE Join Date: Aug 2015 Location: Florida Posts: 7,061	HVAC fan adjustment, is slow to respond normal? I notice when I turn the dial to make the fan speed higher or lower it seems to take a few seconds before the speed changes. The digital readout above the dial changes right away, as does the pop up on the main screen. Just seems to take a couple seconds if I say change the fan speed from one bar, to say four bars (on that small digital readout). It's not a big deal, it's just not instantaneous like my other car. I was just curious if this normal? __________________

01-12-2017, 10:25 AM	#4
SSport16 Drives: 2016 Garnet Red Camaro 2SS Join Date: Jul 2015 Location: North Carolina Posts: 5,435	it is normal, or at least in GM vehicles...My SRX does the same thing, take a sec to adjust higher or lower. __________________ 2SS Camaro, Garnet Red, Adrenaline Red, NPP, MRC, A8, 5 Split Spoke Bright Silver Wheels (56W) 1100 Status - 7/24/15 (Ordered) 3800 Status - 10/13/15 (Built) 6000 Status - 12/22/15 (Delivered)

01-12-2017, 11:06 AM	#5
BradfordCamaro SABIO Drives: 2016 CAMARO 1SS Join Date: Jul 2015 Location: Bradford, ON Posts: 5,013	Yup. Normal. __________________

01-12-2017, 11:20 AM	#6
SS 1LE マスタング = 遅い Drives: 2017 Chevrolet Camaro SS 1LE Join Date: Aug 2015 Location: Florida Posts: 7,061	Cool, thanks fellas. __________________

01-12-2017, 10:18 AM	#2
ctrlz Drives: 2017 2SS, 50th pkg, M6, MRC, NPP Join Date: Jan 2016 Location: Ocean City, NJ Posts: 3,578	I have not tried it but suspect it is normal. The fan motor probably has PWM speed control. Turning the dial is probably just sending a digital signal to the speed control module. The speed at which the ramping up and slowing down occurs is preset in the module. My guesses.

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