Question about Heating & Cooling
An a/c coil freezes up because there is no heat load on the coil. It's either dirty, low on refrigerant, filter dirty, the fan is not running. Defrost the coil by leaving the unit off until defrosted. If the coil is accessible you use a coil cleaner thru a chemical sprayer and spray coil. Do not use the stuff they sell at Home Depot or Lowe's they don't work. get some from an a/c contractor or supply house. After with the chemical sprayer rinse the coil with water. You may have to repeat a couple of time to get it good and clean. If you can not access the coils then you will need to pull and clean the coils. To do this you'll need to pump down the refrigerant into the condenser coil and cut the evap. coil out of the system clean and reinstall. With this you'll need refrigerant gauges and know how to solder and have access to refrigerant. The same if your low on refrigerant you,ll need access to gauges and refrigerant. Depending on system it's either R-22 or R-410 refrigerant.
Posted on Sep 27, 2008
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Posted on Jan 02, 2017
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