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When set to cool one side ends up blowing warm to hot air?

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  • talknitup Oct 09, 2010

    hi i have a NEC split system a/c, when i set it to cool eventually it will bloww warm - hot air from one side into room being cooled. pls help!

  • talknitup Oct 09, 2010

    NEC RSH-6847, cool cap. 6800w, heat cap. 7000w, 3100w/14.4A rated, T1, db814. When household NEC split system air conditioner is set to cool eventually one side will blow warm - hot air?

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Needs regassing thats all ,gas is low and its added by weight

Posted on Oct 09, 2010

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What kind of AC system is this? if it is in a car or truck need the year, the make and the model, automatic temperature control AC or manual AC?

Posted on Oct 09, 2010

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Hello,

If one side of the air conditioner doesn't seem cool, it is necessary to use a thermometer to check the difference in temperature between the air going into the unit and the air being blown into the room. Ideally, the temperature difference should be more than 15 degrees. For example, if the temperature going into the air conditioner is 80 degrees, the temperature coming out of the unit should be at least 65 degrees or less. If the difference is 15 degrees or more there is probably no cause for concern. If the temperature difference is less than 15 degrees you should check the following: Air damper Check to make sure the air damper is closed. If it's open, it will bring in outside air and reduce the efficiency of the unit. Back cover During the winter season many people cover their air conditioners to protect the unit from the weather. In the spring or summer they will sometimes forget to remove the cover. If your unit has a cover on the outside portion of the air conditioner remove the cover first. Condensing coils The condensing coils will always be on the "warm" side of the air conditioner. That is, on the side that faces outside of the room to be cooled. Air is drawn into the back of the air conditioner on the sides through vent slots and is blown directly out through the condenser coils. If the coils get clogged with lint, dust and dirt the cooling system cannot provide the cooling necessary. To clean the coils it will be necessary to remove the entire cover of the air conditioner or pull it out of the wall to gain access to the coils. They can be cleaned by blowing compressed air at them or by using a soft bristle brush to wipe the dirt off. It is important to also clean any dirt or lint build-up in the bottom of the air conditioner so the condensate water will be picked up by the condensing fan slinger properly.

Take care.

Posted on Oct 09, 2010

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