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17
Normal Sounds
• High Pitched Chatter-High efficiency compressors may have a high-pitched chatter during the
cooling cycle.
• Sound of Rushing Air-At the front of the unit, you may hear the sound of rushing air being
moved by the fan.
• Gurgle/Hiss-Gurgling or Hissing noise may be heard due to refrigerant passing through the
evaporator during normal operation.
• Vibration-The unit may vibrate and make noise because of poor wall or window construction or
incorrect installation.
• Pinging or Switching-Droplets of water hitting the condenser during normal operation may
cause these sounds.
Error Codes
If any of the codes found below should appear on the display of the air conditioner please turn the
unit off and back on to see if the code clears. If the error code continues to display, please visit
www.edgestar.com for service.
AS - Room temperature sensor error
• - Evaporator temperature sensor error
Energy Saving Guide
Read and follow the guide below to get the best performance and efficiency from your window air
conditioner:
• Do not cover the air outlet (exhaust) while in use.
• Use the timer to operate the unit before it is needed. For example, set the timer to turn on
the unit in cooling mode for three (3) or more hours to cool the room before you arrive. You
may want to operate the unit all day if you live in a warmer climate.
• Minimize the heat sources (direct sunlight, computers, servers, people, etc.) in the room.
• Close all windows and doors.
• Use the unit in a contained room. For example, a room with four walls and a ceiling, instead
of a partitioned studio, or warehouse.
• Make sure the unit is secure with no gaps where air can escape.
• Minimize the amount of humidity in the room. For example, run the unit as a dehumidifier.
• To prolong the compressor's life, please wait at least 3 minutes before turning the unit back
on after shutting it off.
• Inspect and keep the air filters clean by cleaning regularly.
• Perform routine maintenance.
NOTE: If an error code occurs in Fan mode, the unit will display “LO” (open/loose connection) or
“HI” (short circuit.)
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