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A-C condenser blower motor rotation faux pas...?

W

warranpeace

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Sep 6, 2023
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Genesis Model Year
2012
Genesis Model Type
1G Genesis Sedan (2009-2014)
Had my 2012 3.8 sedan door locks actuator replaced by the Hyundai Dealer...now a/c only works only when car is in motion. Somehow polarity? of blower motor was changed and air is not moving thru condenser in correct direction, I think. I worked for a car dealer as a mechanic in the 60's (yeah, I'm older than dirt) and I did a-c work. Anyway, I guess my question is, does anyone know how to reverse the motor rotation? or what to do?
 
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warranpeace said:
Had my 2012 3.8 sedan door locks actuator replaced by the Hyundai Dealer...now a/c only works only when car is in motion. Somehow polarity? of blower motor was changed and air is not moving thru condenser in correct direction, I think. I worked for a car dealer as a mechanic in the 60's (yeah, I'm older than dirt) and I did a-c work. Anyway, I guess my question is, does anyone know how to reverse the motor rotation? or what to do?
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What do you really mean here?

The AC condenser is in front of the radiator. The fan (not blower) for the AC condenser is also the engine cooling fan. Do you mean that one?

The AC part that cool air comes out of is the AC evaporator. That is under the dash and uses a blower to move air through it and out the dash vents. Do you mean the AC evaporate blower?
 
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I was not sure if there was one fan or two. Okay, it's the one for the condenser-radiator then. I was thinking that the fan-blower-motor was the same unit. Anyway, the electric fan that ventilates the condenser and radiator is the one I mean. The a-c was always working good but the Hyundai dealer fixed a door problem last week and now the a-c only works when the car is in motion. I checked the air coming off the radiator fan and it's blowing in the wrong direction. Instead of the air being drawn in from the front of the car thru the radiator, warm air is actually being blown out the front of the car. That's why I'm thinking the fan blade rotation is wrong and I'm wondering if somehow the motor got reversed. Maybe a polarity issue at the fan motor relay. Do you know where that relay is? Anyway joegr thanks for your interest in the problem.
 
I see what you mean the difference between a fan like a propeller and one like a squirrel cage is a blower. Yes I know that the radiator cooling fan is always the propeller type. Thanks.
 
I think somehow the fan blade got bent and that's why it seems to be hitting something and making noise. I'll see if it's bent and if so try to reshape it.
 
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I think that if your fan blade is hitting something, it is being slowed down greatly by that. If it is bent, I'm not sure that you can straighten it accurately enough to get it back into dynamic balance. It may have to be replaced. A good one from a pick-n-pull junkyard might be pretty cheap.
 
Thanks Joe. I appreciate your help.
I checked the radiator fan blade, and it seems to be okay, but the motor does not run. My apologies for thinking that the blade was damaged or bent and that the motor was running backwards...I'm stupid. I made an ass of myself for assuming.
The motor is not running. (I'm presuming that the radiator fan will always run whenever the engine is running). I need to find a defective relay or fuse. Can anyone out there give me a heads-up about these items. I took the covers off the bus panels and see the relays and fuses.
The first thing I need to do is check the fuse(s) then maybe swap relays to find the bad one. Can somebody suggest the best way to pull the relays without breaking them? They seem to be really tight. I'm fixing to go to YouTube and check the panels there, too.
 
Here's the fuse panel that I needed with the assignments. Now I have to see if it's a bad motor (unlikely), relay, control fuse, line fuse or if there's no control voltage going to the relay something disconnected (GOD forbid) at the dashboard which is possible because the Hyundai dealer just replaced the radio key panel. Could not find the detail for Genesis so I'm hoping Santa Fe is the same.
 

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