| Code | Possible Cause |
| 00H | No detected abnormalities |
| 11H | Error of data line between indoor unit and outdoor unit |
| 12H | Other power error between outdoor unit and indoor unit |
| 14H | Room temperature sensor error |
| 15H | Compressor temperature sensor error |
| 16H | Compressor load current is too low |
| 19H | Internal fan block error |
| 23H | Chiller temperature sensor error |
| 25H | Error e-ion circuit |
| 27H | Outdoor temperature sensor error |
| 28H | Hot rig temperature sensor error |
| 30H | Compressor output temperature sensor error |
| 33H | Error connecting internal and external blocks |
| 38H | Internal and external block error is not synchronized |
| 58H | PATROL circuit error |
| 59H | ECO PATROL circuit error |
| 97H | Error on the outdoor unit fan |
| 98H | Indoor temperature is too high (heating mode) |
| 99H | Chilled temperature is too low (freeze) |
| 11F | Cooling mode / Heating switch error |
| 90F | Bost booster circuit fault for compressor compressor power block |
| 91F | Compressor load line error is too low |
| 93F | Compressor rotation speed error |
| 95F | Hot platform temperature is too high |
| 96F | Compressor power transistor overheat (IPM) |
| 97F | Compressor temperature is too high |
| 98F | Compressor load is too high |
| 99F | The DC output to the compressor is too high |
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