To troubleshoot a Tempstar air conditioner, inspect and clean the ventilation grill, clean out the compressor and lubricate the fan. Be sure to slide the selector switch to the top or completely rotate the thermostat in a clockwise direction to keep the appliance from turning on during troubleshooting.
Before troubleshooting, gather a Torx or Phillips screwdriver, a spray can of lubricant, paper towels, a brush with stiff bristles and a flashlight. Go to the ventilation grill on the air conditioner's outdoor compressor, and remove any leaves and debris. Unscrew the screws holding the grill in place. Depending on the model, a Phillips or Torx screwdriver may be needed. Use a moist paper towel to clean the inside of the grill, and wipe it dry with another paper towel. While shining a flashlight into the air conditioner, use the stiff brush to clean the compressor's cooling coils, and use a moist paper towel to clean the compressor.
When the grill is open, the spray lubricant can be used to lubricate the fan. Spin the blades while spraying the lubricant for six seconds. If these basic troubleshooting methods are unsuccessful in solving the unit's operational problems, call the Tempstar technical support department. All functioning parts are covered by a 10-year limited warranty, and the appliance itself includes a 10-year No Hassle Replacement warranty that promises a single replacement unit if the coil or compressor is defective.