Below is a detailed guide on the error and protection codes for PRIME minisplit air conditioners, categorized by U-U1 and W models. These codes are essential for identifying and resolving issues with your equipment.
Error Codes for U-U1 Models
Each error code specifies the cause of the malfunction, enabling proper diagnosis and action.
| Code | Cause of Malfunction |
|---|---|
| E0 | Communication error between evaporator and condenser |
| E1 | Room temperature sensor failure |
| E2 | Evaporator temperature sensor failure |
| E3 | Condenser temperature sensor failure |
| E4 | System error |
| E6 | Evaporator fan motor failure |
| E7 | Outdoor temperature sensor failure |
| E8 | Exhaust temperature sensor failure |
| E9 | Intelligent power unit and module error |
| EF | Condenser fan motor failure |
| EA | Current sensor failure |
| EE | Electronic board failure |
| EP | Temperature switch sensor failure (top of the compressor) |
| EU | Voltage sensor failure |
Protection Codes (Warnings) for U-U1 Models
These codes indicate conditions requiring attention but not necessarily immediate repair.
| Code | Cause of Protection |
|---|---|
| P1 | Protection against low or high voltage |
| P2 | Overvoltage protection |
| P4 | High exhaust temperature |
| P5 | Freezing in cooling mode |
| P6 | Overheating in cooling mode |
| P7 | Overheating in heating mode |
| P8 | Overheating or freezing protection for the condenser |
| P9 | Unit protected by software |
| P0 | Control module protected |
Error Codes for W Models
Similar to U-U1 models, these codes help identify specific issues in W models.
| Code | Cause of Malfunction |
|---|---|
| F1 | Communication error between evaporator and condenser |
| F2 | Room temperature sensor failure |
| F3 | Evaporator coil temperature sensor failure |
| F4 | Evaporator fan motor failure |
| F5 | Condenser module error |
| F6 | Condenser room temperature sensor failure |
| F7 | Condenser coil temperature sensor failure |
| F8 | Compressor suction temperature sensor failure |
| F9 | Compressor discharge temperature sensor failure |
| FC | Compressor drive failure |
| FD | Phase sequence failure |
| FE | Gas return sensor failure |
| FF | Other fault |
Protection Codes (Warnings) for W Models
These codes protect your equipment from potentially harmful conditions.
| Code | Cause of Protection |
|---|---|
| P1 | Evaporator temperature protection |
| P2 | Overheating or overload protection for the inverter module |
| P3 | Overload or overcurrent protection |
| P4 | Compressor discharge temperature protection |
| P5 | Overheating protection for the top of the compressor |
| P6 | Compressor suction temperature protection |
| P7 | Protection against low or high voltage |
| P8 | Low-pressure protection for gas return |
| P9 | High-pressure discharge protection |
| PA | High-temperature protection for the condenser |
| PC | High ambient temperature protection for the condenser |
| PF | Other protection |
