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15
Cabinet Cleaning
• Be sure to unplug the air conditioner to prevent shock or fire hazard. The cabinet and front
may be dusted with an oil-free cloth or washed with a cloth dampened in a solution of warm
water and mild dishwashing detergent. Rinse thoroughly and wipe dry.
• Never use harsh cleaners, wax, or polish on the cabinet front.
• Be sure to wring excess water from the cloth before wiping around the controls. Excess water
in or around the controls may cause damage to the air conditioner.
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.
koldfront.com for service.
• F1 - Indoor ambient temperature sensor error
• F2 - Indoor internal temperature sensor error
• F4 - Outdoor internal temperature sensor error
• FJ - Air outlet temperature sensor error
• EP - Indoor ambient or internal temperature sensor error
• FO - Refrigerant shortage in the sealed system
• H3 - System overload protection
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