Carrier 40MAQB18A3 Mini Split Error Codes
40MAQB18A3 Error Code Reference
Section titled “40MAQB18A3 Error Code Reference”Carrier MAQB-series 18000 BTU ductless mini-split with auto-restart
| Error Code | Fault Description |
|---|---|
| E2 | Indoor thermistor fault |
| E4 | Outdoor thermistor fault |
| E5 | Discharge thermistor fault |
| E6 | Communication fault |
| E8 | Indoor fan motor fault |
| HP | High pressure protection |