How to Troubleshoot Tempstar Air Conditioners

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A Tempstar central air conditioner employs a compressor located outside to drive cold air through vents. Insufficiently cold air or lackluster air pressure through the vents indicates a problem with the Tempstar that must be corrected. Troubleshooting the Tempstar central air conditioner to locate the problem is a do-it-yourself project. Common household supplies and tools are needed, along with a basic knowledge of how electricity works, for safety reasons.

Things You'll Need

  • Phillips screwdriver/Torx screwdriver
  • Paper towels
  • Stiff bristle brush
  • Lubricating spray can
  • Flashlight
  • Inspect the ventilation grille on one side of the Tempstar's compressor outside the house. Remove leaves or other material possibly stuck to the outside of the grille. Remove the screws from the grill using a Phillips screwdriver or a Torx screwdriver, depending on the Tempstar model. Wipe off the inside of the grille with a water-moistened paper towel. Dry the grille with a dry paper towel. Place the grille back on the compressor and reattach the screws.

  • Remove the screws from the grille on the outside compressor. Place the grille aside. Rub a stiff bristle brush against the length of each of the cooling coils inside the compressor to remove dirt, grime and other contaminants. Thoroughly wipe the compressor with a water-moistened paper towel. Place the grille back on and reattach the screws.

  • Remove the screws holding the ventilation grille on the compressor. Place the grille aside. Insert an end of the included plastic straw into the nozzle of the lubricating spray can. Shake the can for 5 seconds. Aim a flashlight inside the compressor so that you can see the fan. Spray the sides of the fan with a 6-second burst. Rotate the fan two rotations clockwise with your hand. Turn the flashlight off and place the grille back on the compressor. Reattach the screws.

Tips & Warnings

  • Rotate the Tempstar's thermostat dial fully clockwise -- or slide the selector switch all the way up -- so that the air conditioner doesn't start while you troubleshoot it.

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