Sharp AH-XP18SHV Air Conditioner Error Codes
AH-XP18SHV Air Conditioner Error Code Reference
Section titled “AH-XP18SHV Air Conditioner Error Code Reference”The Sharp AH-XP18SHV (18,000 BTU SmartChoice Inverter Split System (US)) uses the following diagnostic error codes:
| Error Code | Fault Description |
|---|---|
| E1 | High pressure protection — compressor discharge pressure exceeded limit |
| E2 | Anti-freeze protection — indoor evaporator coil temperature too low |
| E3 | Low pressure protection — refrigerant circuit pressure below minimum threshold |
| E4 | Discharge temperature protection — compressor discharge temperature too high |
| E5 | Compressor overload protection — compressor current exceeded protection threshold |
| E6 | Indoor-outdoor communication fault — serial link between units lost |
| E8 | Indoor fan motor protection — fan motor locked, overloaded, or speed signal absent |
Select a code above for detailed causes, step-by-step repair instructions, and FAQs.