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Posted on May 22, 2011

I have a 12,000 BT. Model #580.75121501 Kenmore window AC unit. Air is blowing out of it but it's not cool. It's only a couple of years old. What's wrong and what can I do to fix it without having to haul it 40 miles to my Sears dealer?

5 Related Answers

motor1258

Mike Butler

  • 6674 Answers
  • Posted on Aug 26, 2008

SOURCE: duo therm ac problem

Yes they are a closed system, and most places don't want to be bothered with cutiing the line, soldering in a fitting for refill, and then find out there is a big leak somewhere, that can't be detected until you waste the freon etc. Have you owned the RV since new, and are sure it did work good before? Have you tested the temperature difference ? For example, they are really only designed to remove moisture from the inside air, as well as cool the inside air (ambient) to about 20 degreesF, below the outside temperature. Has the condensor coils/fins & evaporator coils/fins, been thoroughly cleaned recently? If they are plugged, it can significantly reduce cooling ability of the unit.

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Anonymous

  • 15 Answers
  • Posted on Sep 18, 2008

SOURCE: AC changes temperature by itself!

If it's not some sort of built in economizing feature, someone else isn't getting up and changing the temperature while you are asleep and the air conditioner fairy is playing tricks, then the control PCB is in need of repair and will have to be repaired through a sears authorized repair center.
I am a bit surprised that it will allow you to set the temperature to a low 70 degrees as this is pushing the limits of an air conditioner. They tend to freeze the coils at around that temperature.

Donni Steen

  • 687 Answers
  • Posted on Mar 31, 2009

SOURCE: hello, I have a Kenmore 580.75124500 ac/heater

It is probably the compressor. You will need to check if the compressor is being called to come on. Do you hear the compressor running? If you do, I would remove the unit from the wall or window, and wash it down real good with a hose being careful not to get the electronics wet. If not and the unit sound different than it did before, it's probably time to buy a new one.

stevedavis4

  • 16 Answers
  • Posted on Jun 07, 2009

SOURCE: window ac unit is not blowing cold air

When the unit is running, go outside and put your hand near the condenser fins, this air that comes out should be slightly warmer than the ambient temp. If it is not you will need to take the unit out of the window and out of its outer case and clean the condenser fins from the inside, this is no easy task as it is very hard to reach. You will want to get a small (toothbrushed sized) brass bristled brush with a long handle. Make sure the evaporator coil (in the front) recieves the same attention and wash the mesh filter that goes in front of the evaporator. Re- assemble and enjoy the cold air.

Anonymous

  • 614 Answers
  • Posted on Jun 14, 2009

SOURCE: window air cond unit, several years old, doesn't blow as cold

The problem with window units and any service tech will tell you it cost more to repair than you can buy at Walmart or home depot. Unless you know someone who can charge it for you. Window units are a sore subject. A 200 dollar window unit might cost 200 dollars to charge system. SORRy rusty

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How do I set my ac to blow cold air on my apt tn 12E Technitrend 12,000 btu portable ac unit. I don't have a manual.

Dear Elaine,
Somewhere on that unit should be a "model number".
It should be like this: 40tyr0574jhf85If
If you could find that, type that model number into the web site for "SearsPartsDirect" and you should get a complete breakdown for your machine, including a printable owner's manual.
God bless your efforts.
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Sounds like the unit is just dirty. The AC pulls air through coils and contains dirt, pollen, grease and all type of pollutants. These contaminants will cling to the coils, reducing the AC ability to transfer heat.

Here's a great YouTube video explaining how to properly clean a window AC. How to Clean Window Air Conditioner

AC units should be cleaned every year (including the whole house units), to maintain their ability to cool efficiently.
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Pa12NA048-d. How many tons is this unit? It's 7 years old and went out. Needs replacing.

Hi, the tonnage is a 4 ton unit. It says in the model number, the 048. There is 12,000 btu's per ton of cooling. So, on your unit 4x12=48= a 4 ton unit.
Good Luck,
Shastalaker7
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I have a Emerson Quiet Kool Model # 12JW42K that is 13 years old. It doesn't seem to cool the apt. anymore. I assume that it would be smarter to get a new "energy saving" unit than invest in...

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http://www.islandaire.com/
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I have an LG window air conditioner that's about 2-3 years old. The cooling function doesn't work. It just blows air and makes the air conditioning sound. How can I fix it? Is there a cheap...

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Danby ALSO does not cool 3 days old

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Ductless minisplit in old mobile home

ductless mini split units are a very good choice!  they are obviously quieter, more efficient and easier to maintain than window units. the downside is the initial expense of buying the unit, but this is paid back in eletric savings and peace of mind. Good luck Peyton
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