Question about Weather King 12AJA4801AH Air Conditioner

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UNIT NOT BLOWING WARM AIR-OR REACHING DESIRED TEMP

My model number is not recognized but the correct one is WSKA-A024JK 000
My problem is the same only about the cool air, if the temp outside gets warmer than about 60 degrees or so it seems the heat is working fine. If the temp outside is colder then set the unit on 70 it continuously runs. Set it at 69 and seems to shut off and on correctly. The air feels warm at first then blows cool. If the unit is set any higher it never reaches that temp and continuously runs. My electric bill went from around 135.00 to 456.00 from one month to the next. Breakers have been changed and the vents all seem to be connected and there are no holes. It is getting really annoying to hear this thing run constantly and not heat as other type units I have had. I do live in an older home with less insulation than a new home but we're working on that as well. Upstairs the heat that blows for that area is warm to hot and really works well. I'm disappointed and really need some advice.

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I assume this is a heat pump. The outside unit may be icing up. It should have a defrost cycle with electronic control that sometimes fails or sensor associated with the electronic determination of when to defrost may have failed or may not be sensing because its out of position. You can check for a defrost problem. If frost is blocking the outside unit air will not pass through it after the frost builds up and you may be able to see the white frost as well. If all this is true you need to get a service manual and use its procedures to find out why the unit is not defrosting.

Posted on Jan 13, 2009

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Hey kellyrepp -- Three things to check quickly, so many things can be wrong, but i will try to help with the info you gave me.

The first sounds like your electric aux heat is not wired in or not working correctly , this should kick in when the heat pump cannot keep up with desired set temperature. For sure thats a problem

The second thing i would check is that the compressor for that unit is running. It should sound exactly like the one for the upstairs, the fan noise should be like a whrrrr , and the compressor should be a semi loud hummm.

Third feel the pipes on the outside unit that are on the outside of the unit (the unit for the second floor) Let the unit run for 5 minuites. Now check that the first floor unit pipes are the same tempereture. They are about 110 degrees or so, depending on the outside temperatur , be carefull not to burn yourself. If the lower unit is colder , the two most prominent problems would be #1 the compressor is not running #2 Low on freon.

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