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#1
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R107 Climate Control - What is the difference between heating and cooling
Ok, maybe I am missing something here. In the past few months I have tried to figure out a way to bypass my servo (which died a while back) because I don't want to the invest the $$ for a new one. I have read a lot of posts about the servo and amp problems, and I have tried to do some research and understand how the climate control systems works - from what I've gathered thus far, the gist of what people have recommended and tried to do is basically slow down or stop the flow of hot water into the heater core.
What I don't understand is kind of the opposite of that. I am in Texas and I would like some way to get cool or cold air out of my A/C. But what I haven't been able to figure out is how cool air is generated from the system. Where in the process does it go through the compressor, and is there a way to do this without the servo? Also, if I remove the servo and amp, what functionality does the rest of the climate control system do? Should I still be able to use the control panel to turn on and off the compressor, or should the control panel be essentially useless? Any help or links would be greatly appreciated. I'd love to find some more information to understand all aspects of the system, not just the heating. Thanks! |
#2
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As far as the A/C goes, the servo controls what hole the air comes out of. You can block the hot water with a clamp or whatever and stop the hot water from entering the cabin. Your A/C will still work with out a servo, but the cold air will likely come out the defroster holes. It just depends on where your servo happens to "park" when it failed. I have a small pair of vise-grips clamping my heater hose for the time being. The servo controls the amount of hot water, the vacuum that controls the vents inside the cabin and a few other things that have nothing to do with the A/C.
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#3
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Here's what I think.
It's not enough to just shut off the flow of hot water to the heater radiator, because it will still get hot eventually from the outlet side. If you want cold air, you need to get the flaps into the "cool" position, so that air is not directed past the heater radiator. This is what should happen when you get air from the center vents. Otherwise, your AC will just fight with the heater and the result will be warm air. Think about it. The switch to "cool" is what allows cold air out of the vents even if the heater was going full blast.
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Chuck Taylor Falls Church VA '66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe |
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