Outdoor unit function code settings (O.DN codes) for high static pressure or priority modes. Refrigerant Cycle Diagrams
Self-diagnosis function and error code tables (e.g., E, F, L, P, and H codes). Diagnosis of inverter P.C. boards and compressor issues. Parts Replacement toshiba mmy-map1004ft8-e service manual
| Error Code | Description | Possible Causes (per manual) | |------------|-------------|-------------------------------| | E01 | Communication error between outdoor and indoor | Wiring break, wrong polarity | | E08 | High pressure protection | Clogged filter, overcharged refrigerant, fan failure | | E10 | Low pressure protection | Refrigerant leak, clogged expansion valve | | E18 | Compressor overcurrent | Inverter module failure, locked rotor | | E29 | Discharge temperature sensor fault | Sensor disconnected, damaged thermistor | | F12 | Outdoor fan motor lock | Debris in fan, motor bearing failure | Outdoor unit function code settings (O