Carrier 42QHC024DS Air Conditioner Error Codes
42QHC024DS Error Code Reference
Section titled “42QHC024DS Error Code Reference”Carrier 42QHC-series 24000 BTU inverter split AC
| Error Code | Fault Description |
|---|---|
| E2 | Indoor thermistor fault |
| E3 | Indoor coil thermistor fault |
| E4 | Outdoor thermistor fault |
| E6 | Communication fault |
| E7 | Outdoor fan fault |
| HP | High pressure protection |