A/C and dehumiidifying

Recently bought a used 2001 civic EX. I don't have the manual so i can't
figure it out how to turn off the AC while im dehumidifying windshild... I
don't want the AC turned on while dehumidiying. Could someone tell me how
to do this. I read a similar post months ago regarding same problem but
can't find that post here anymore. Any help is appreciated.

 

press the a/c button.



....................
I do not killfile nor use do-not-call lists.

 

I did a search on Google news groups & found the following:

(1) Turn Car Off
(2) Turn Temperature Knob To Full Blue (All the way to the left -
Counter-Clock Wise)
(3) Turn Vent Knob To Off (All the way to the left - Counter-ClockWise)
(4) Hold Down Air Recirculation Button As Well As A/C Button. NOT THE
DEFROSTING BUTTON.
(5) Turn the key to ON, the second position. The recirculation light blinks
ONCE and the AC light blinks once.

You will now have control of your A/C regardless of what setting you are in,
to revert back, simply repeat the procedue.
Make sure u hold on to the two buttons before u turn on the car. Hold it
till after the AC button blinks. The recirculation button blinks
first than the AC. Make sure you are not holding on the Defrosting button
for the rear window.

 

One should want the A/C ON while defogging a windshield!! The
dehumidified air, coming off the coil, will clear the windshield
faster than just warm air. If the a\c is activated automatically
in the defrost mode then the simplest way to insure the A\C is
not activated in winter is to unplug the power to the compressor
at the compressor. Not a good idea to not run the A\C on
occasion, but it is easy.


mike hunt

 

You will now have control of your A/C regardless of what setting you are
in,

I did this un my CR-V some time ago. Just a small note here, the AC will
still some on when the windshield or windshield/floor position is selected,
but you'll be able to turn it off.

 

(yawn) Not true. Warm air will defog better than cool air, BUT, being dryer
helps.

Most cars run the a/c in defrost mode. This dries the air of moister, and
then its passed over the heater coils. Being dryer helps defogging, but
moister content varies, so it would be nice to have control over the a/c,
but most manufacturers believe the operator would be too stupid to figure it
out.

Disconnect if you wish, and see how it goes, but be advised, there is
another reason to run the a/c on occasion, and that's to lubricate the
system and seal, and keep it from drying out.

Good luck.

 

Yet another witless comment. Perhaps if you could actually
comprehend what you read you would have noticed what I said was
dehumidified air, coming off the coil, will clear the windshield
faster than JUST warm air.

On modern A\C systems the air is passed over the A\C coil than
over the heater coil while in the defrost mode. On those vehicle
equipped with an automatic climate control system, the defrost
mode will activate first when the outside temperature is below 60
degrees and as soon as heater and A\C coils achieve a
predetermined temperature. Generally the A\C compressor, on
newer cars, will not activate below 60 degrees except in the
defrost mode.


mike hunt

 

Why would you want to?

The entire *purpose* of A/C is to dehumidify. That it does so by
cooling the air to remove the moisture, is almost immaterial--especially
in a car. The A/C removes the moisture from the air, and the air is
then passed through the heating system to take it to whatever
temperature you want.

So just set the temperature selector as appropriate, and when you need
moisture removed you use the A/C as appropriate.

The car assumes that above 32 degrees F, when you hit the "defrost"
button, you need DRY air in the car to remove the frost and/or fog--the
MOISTURE--from the windshield. So, it turns on the A/C. Below 32
degrees F, the A/C doesn't cycle on.

Then you're missing the entire POINT of deHUMIDifying. If you want
moisture gone--that's what dehumidifying is, you know--then you want the
A/C on to do that task.

What do you think dehumidifies the air if not the A/C? Gremlins?

 

And in a car, you dry the air first and THEN run it through the heating
system. Just make sure that (a) the A/C is on, and (b) the temperature
knob is over to the hot zone.

 

if yuou want to buy a owners manual for your car go to
www.helminc.com the people who write the manuals for the car
manufacturers.. they will sell them to you, not cheap, but yuo will have
one.... hope this helps.

 

I turn off the A/C too. The problem is that I only need defogging for a
few minutes when first starting the car. Once the A/C is used you're
committed to using it until you're done driving. Turning it off causes
instant fogging from the wet A/C evaporator.

The only time I need the A/C to defog is in stop and go traffic in the
rain. The air intake sucks steam off the hood and the A/C is required
to dry it out.

 

For that and other valuable snippets of info visit www.7thgencivic.com and
look in the DIY section.

Rgds, George Macdonald

"Just because they're paranoid doesn't mean you're not psychotic" - Who, me??

 

On modern A\C systems the air is passed over the A\C coil than

Thanks for refining what I just said you ignorant idiot. [huuuuge grin]

 

Below a certain temperature (around freezing) the A/C won't come on even
though the indicator light is illuminated on the dash.

 

The A\C in modern HVAC systems does not engage the compressor
below sixty degrees. However it does cycle on in the defrost
mode at any temperature, enough to cool the coil to aid in
dehumidifying the outside air before it flows over the heating
coil.


mike hunt

 

Not in a 99 Honda Accord.

 

Most certainly it does.

Below freezing, no. But above freezing, yes.

Where did you get the 60 degrees crap from?

 

(yawn) Wrong again...this is NOT true in many autos. Ignore this idiot.

 

Out of his ass.

 

Yep.

It's usually an air temperature of about 37F measured on the output side
of the evaporator. The A/C wouldn't get much of anything done at 60F.