Kolin Error Codes
Every Kolin error code we have catalogued, with what it means on site — 39 codes in total. In R-Pro, tap any code to get the meaning, likely causes and inspection steps, even with no signal in the plant room.
39 codes
| Code | What it means |
|---|---|
| E1 | High pressure protection / compressor high pressure |
| E2 | Anti-freeze protection (indoor) |
| E3 | Low-pressure protection / low refrigerant |
| E4 | High discharge temperature protection |
| E6 | Unstable indoor–outdoor communication |
| E8 | Indoor fan motor malfunction or blockage |
| E9 | Water overflow / drain system issue |
| F0 | Indoor ambient temperature sensor malfunction |
| F1 | Evaporator temperature sensor malfunction |
| F2 | Condenser temperature sensor malfunction |
| F3 | Outdoor ambient temperature sensor malfunction |
| F4 | Discharge temperature sensor malfunction |
| EE | EEPROM chip problem (control board) |
| ee | Drive memory chip issue (outdoor) |
| PF | Electric box sensor malfunction |
| H3 | Compressor overload protection |
| H4 | Overload protection with coil blockage |
| H5 | IPM protection / unstable power |
| H6 | DC fan motor malfunction |
| H7 | Drive desynchronization protection |
| HC | PFC protection mode |
| Ld | Reverse / open phase wiring problem |
| LE | Compressor stalling protection |
| LF | High voltage surge protection |
| Lp | Indoor–outdoor unit mismatch |
| U7 | 4-way valve malfunction |
| P0 | Drive reset protection |
| P5 | Inverter compressor over-current protection |
| P6 | Communication broken between main board and drive |
| P7 | Drive module sensor malfunction |
| P8 | Drive module over-temperature protection |
| PA | Current protection mode |
| Pc | Drive current circuit defective |
| PE | Temperature drift protection |
| PL | Bus voltage below minimum limit |
| PH | Input voltage above maximum limit |
| PU | Charging circuit malfunction / capacitor instability |
| PP | Input voltage abnormality |
| C4 | Outdoor capacitor malfunction |
Official Kolin source / manual ↗
Look up any error code — offline — in R-Pro.
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