Hello --
I live in Brooklyn, I just moved in to a condo that has a Weather King. It is a new condo, and the model is new. I moved into the condo 1 1/2 months ago, and no one else has lived here before me.
The air conditioner initially blew very cold air. Now, it blows fan air mixed with the cold. It is very unpredictable. Any idea?
Possible causes are dirty filters, dirty condenser coil, dirty evaporator coil, or low referigerant charge. Any one of the conditions will affect heat transfer.
Check the filters in your indoor unit, If they seem to be clean and replaced on a regular basis, your evaporator coil is probably in good shape. Unfortunatley on some Weather King models even checking the evaporator coil is not possible due to the extensive amount of referigerent lines that block access to the coil without some major work including evacuating the refrigerant.
The most likely cause is a dirty outdoor condenser coil. On weather king models you will have to remove the casing that surrounds the coil because is is built in such a way that the condenser coil cannot be properly cleaned with the casing in place. Once it is removed make sure breaker is switched off and clean the coil with a water hose.
If your outdoor coil is not dirty then it is a refrigerent problem.
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