Carrier 40MAQB12A3 Mini Split Error Codes
40MAQB12A3 Error Code Reference
Section titled “40MAQB12A3 Error Code Reference”Carrier MAQB-series 12000 BTU ductless mini-split indoor unit
| Error Code | Fault Description |
|---|---|
| E2 | Indoor room thermistor fault |
| E3 | Indoor coil thermistor fault |
| E6 | Communication fault |
| E7 | Outdoor fan motor fault |
| HP | High pressure protection |
| LP | Low pressure protection |