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Former H Master Tech
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318 Posts
Once you understand how A/C works then you'll understand why you get no A/C in the winter...

"First you take a gas, like Freon, and place it in a sealed system. This freon is then pressurized using a compressor. As it's pressurized, it gets hot by absorbing the heat around it. This hot gas is then circulated through a series of tubes that dissipate the heat. Scientifically, the gas removes heat rather than adds cold, but that's a lesson in physics that doesn't really matter to us right now. The gas can lose lots of its heat, in other words it gets really cold, when you reduce the pressure. As it cools it becomes a liquid. This is when you get cold air blowing on your sweaty forehead."

Without heat/humidity you don't get the chemical reaction to create the ice cold air. Your pressure switches may not activate and would not allow the compressor to turn without the proper temp. The hotter ambient temp outside the more efficient your A/C works too.
 

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Just curious if the AC compressor does not kick in / cycle on / off below a certain temp?
If you are paranoid set it on AUTO, then press the AC button twice.

No pressing of AC button on AUTO mode = AC will come on when needed
1 press AC button = AC will turn on
2 press AC = AC will never turn on (mode will display AC OFF)

The auto feature will still work (controls fan speed and temperature) and the AC will be disabled at your request.:banana:
 
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