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Manually control a/c compressor with defrost on - Page 2

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Posted by Elmo P. Shagnasty on April 16, 2015, 10:01 am
 


Huh.  Well, how about simply mechanically rigging the damper such that  
air always flows onto the windshield?  Don't know if you can do that,  
but if so it may be simpler than messing with the electronics.




Well, by definition "defrost" means "remove moisture"--and the removal  
of moisture (not cooling) is why the air conditioning compressor is  
there in the first place.  To defrost, one must first start with dry air.

To mitigate the cold effect that comes with removing moisture, one can  
add heat back to the dry air--which is what the system does.

I guess Toyota never considered that anyone would want air on the  
windshield for general purposes--that any air directed to the windshield  
is overall intended for the purpose of removing moisture from the  
windshield.

Ergo, I keep going back to the mechanical solution--can the door that  
diverts air to the windshield be rigged or removed such that air always  
goes to the windshield regardless?  Would that solve the problem?

Posted by bwilson4web on April 16, 2015, 4:53 am
 
Hi Bob,

On Tuesday, April 14, 2015 at 10:00:08 AM UTC-5, Bob Simon wrote:

r the duration  

esume the best way  

e advise how  

I know how to find out. Toyota has a technical information service:
https://techinfo.toyota.com/techInfoPortal/appmanager/t3/ti  

With this service, you can register and pay for access to the shop manuals  
for your car. Download the schematics and parts of the shop manual that app
ly to your prius and the problem is solved.

You might also visit PriusChat.com, the Prius c forums. The moderators are  
very skilled at keeping the 'trash talkers' out. Best of all, you'll be wor
king with folks who own your model car and walk out to the car to see what  
is there. Registration is free at PriusChat.com

GOOD LUCK!
Bob Wilson


Posted by Bob Simon on April 16, 2015, 5:57 pm
 On Wednesday, April 15, 2015 at 11:53:18 PM UTC-5, bwilson4web wrote:

for the duration  

presume the best way  

ase advise how  

s for your car. Download the schematics and parts of the shop manual that a
pply to your prius and the problem is solved.

e very skilled at keeping the 'trash talkers' out. Best of all, you'll be w
orking with folks who own your model car and walk out to the car to see wha
t is there. Registration is free at PriusChat.com

Thanks for the useful reference.  Since this project will be a stretch for  
me, I'd like to like up some potential technical assistance.  Are you aware
 of a newsgroup where Toyota electrical mods are discussed?

Posted by Bob Simon on April 16, 2015, 5:59 pm
 On Thursday, April 16, 2015 at 12:57:49 PM UTC-5, Bob Simon wrote:

d for the duration  

I presume the best way  

lease advise how  

als for your car. Download the schematics and parts of the shop manual that
 apply to your prius and the problem is solved.

are very skilled at keeping the 'trash talkers' out. Best of all, you'll be
 working with folks who own your model car and walk out to the car to see w
hat is there. Registration is free at PriusChat.com

r me, I'd like to like up some potential technical assistance.  Are you awa
re of a newsgroup where Toyota electrical mods are discussed?

line up

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