Content: Air Conditioner Error Codes, PTAC Error Codes, Portable Error Codes, Dehumidifier Error Codes, Care and Cleaning 1.Frigidaire Air Conditioner Error Codes These instructions are not meant to cover every possible condition and situation that may occur. Common sense and caution must be practiced when installing, operating, and maintaining any appliance. Frigidaire Air Conditioner Error Codes Problem Solution EA If the display reads "EA" , the room temperature sensor has failed. Contact your Authorized Frigidaire Service Center. ES If the display reads "ES" , the evaporator temperature sensor has failed. Contact your Authorized Frigidaire Service Center. E4 If the display reads "E4" , the display panel communication has failed. Contact your Authorized Frigidaire Service Center P1 If the display reads "P1" , bottom tray is full. Carefully move the unit to a drain location, remove the bottom drain plug and let the water drain away. Restart t...