Codes by symptom
The same published codes, grouped by what you are seeing. E3, E4, EF, EH, FX, CL and DF stay in their own groups.
Fault codes
Most faults involve sensors, boards or refrigerant, which need a licensed technician. A few have a check you can make first; open the code to see.
E0Lost communication between indoor and outdoor unitsCommon at start up.E1Indoor temperature sensor faultTechnicianE2Indoor pipe temperature sensor faultTechnicianE3Outdoor pipe temperature sensor faultTechnicianE4Refrigerant system leakage or faultTechnicianE6Malfunction of the indoor fan motorTechnicianE7Outdoor air temperature sensor faultTechnicianE8Outdoor discharge temperature sensor faultTechnicianE9Outdoor IPM module faultTechnicianEAOutdoor current detect faultTechnicianEEOutdoor PCB EEPROM faultTechnicianEFOutdoor fan motor faultTechnicianEHOutdoor suction temperature sensor faultTechnicianFXAdvanced troubleshooting codesAny code starting with F.TechnicianP4Compressor overload
Reminders and normal operation
These are not faults.
Window AC codes are listed in the manual for your window unit. Contact support if you need a copy.