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HVAC Temp dial not working

Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Ok.
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Tuesday, January 24th, 2012 AT 5:14 AM
Tiny
WNCHSTR1947
  • MEMBER
  • 1 POST
I read posts concerning inop HVAC control.

After replacing a dead battery, the HVAC would blow full hot 2 clicks off of cold. Tried recalibration several times with no luck, then I saw mention of feedback voltage being
out of spec. The new battery was 100% top charged but during the cal procedure the fan is on high.

I hooked up a high amp charger to boost system voltage -- problem solved!

2009 H3
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+1
Wednesday, February 21st, 2018 AT 1:30 PM
Tiny
DWALLER67
  • MEMBER
  • 1 POST
I know this thread is really old but I was wondering if anyone had found a resolution to the issue? I just purchased a 2007 H3 with 35,000 miles. Looks new and still smells new. I am having the exact same issue as described; one click off max cold and I’m getting full heat. I have a code reader and there are no unknown codes (radio com code due to aftermarket stereo). Any help is appreciated.
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Sunday, November 25th, 2018 AT 11:50 AM
Tiny
JOE CARTER4
  • MEMBER
  • 1 POST
Has anyone tried replacing the voltage regulator or alternator to get higher voltage? Having same issues with my 2007.
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Sunday, May 23rd, 2021 AT 6:27 PM
Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello, I'm Danny.

You've attached a question that is non-related to a years old question. We ask you to start a new question to make things easier. Please be sure to include all your vehicle information. Here is the link to start a new question:

https://www.2carpros.com/questions/new

Hope this helps and we'll be happy to answer your question. Thanks for using 2CarPros.
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Monday, May 24th, 2021 AT 11:32 PM

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