Question on AC/Heater control knob

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Pontiac Fanatic - 12 Nov 2005 06:27 GMT

Hi there.

I have a question on the heater controls. The heater settings (in red color)
point to these options: DEFROST, FLOOR and DASH.

Now the setting for FLOOR and DASH *at the same time* is actually colored in
the BLUE part of the dial right next to the air conditioning settings.

The BLUE settings are AC and MAX, but the FLOOR and DASH is confusing me...
can I run that with the temp dial set to hot and have it blow hot air (which
it does) in the winter without it kicking in the air conditioning ?? I don't
want to run AC all winter when I really am looking for heater settings.

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Harry Face - 12 Nov 2005 07:44 GMT

And praytell what is the mystery car were talking about?

Is it an automatic climate control ?

If its set up like my Buick, the compressor runs in every mode except
vent.

Harryface
05 Park Avenue, 32,360
91 Bonneville LE 304,498

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=AB Paul =BB - 12 Nov 2005 17:20 GMT

> Hi there.
>
[quoted text clipped - 10 lines]
>
> :)

Your 2005 G-6 runs the a/c all the time in every setting except vent.

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Pontiac Fanatic - 12 Nov 2005 19:09 GMT

Err it's a 93 Grand Am... sorry about that

> > Hi there.
> >
[quoted text clipped - 12 lines]
>
> Your 2005 G-6 runs the a/c all the time in every setting except vent.

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=AB Paul =BB - 13 Nov 2005 03:35 GMT

> Err it's a 93 Grand Am... sorry about that
>
[quoted text clipped - 7 lines]
> want to run AC all winter when I really am looking for heater settings.
> :)

Your 93 G/A runs the a/c in EVERY setting except for vent and heat regardless of
temp setting. The pressure switch normally turns off the compressor at about
20-30 psi, which is about 20-30F.
That is normal for American made cars. Foreign cars have a switch to turn the a/c
on-off. I installed a led rocker switch in my 92 G/A that turns the a/c relay
on-off like a foreign car. Its in the bottom left hand corner of the knob panel.
Turn off the compressor and save gas.

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