Fault Diagnosis
Quickly identify and resolve air conditioner issues with our comprehensive error code guide.
How to Check
01
Hold Cancel
Press and hold the 'Cancel' button on your remote for about 5 seconds.
02
Blinking "00"
Wait until "00" starts blinking on the remote's temperature display.
03
Listen for Beep
Press 'Cancel' repeatedly until you hear a continuous long beep.
04
Read Code
The code currently displayed on the screen is your error code.
| Code | Category | Diagnosis / Meaning |
|---|---|---|
| 00 | System | Normal Operation |
| UA | System | Indoor–Outdoor Unit Combination Fault |
| U0 | System | Refrigerant Shortage |
| U2 | System | Drop Voltage or Main Circuit Overvoltage |
| U4 | System | Transmission Failure (Indoor ↔ Outdoor) |
| A1 | Indoor Unit | Indoor PCB Defectiveness |
| A5 | Indoor Unit | Freeze-up Protector Activated |
| A6 | Indoor Unit | Fan Motor Fault |
| C4 | Indoor Unit | Faulty Heat Exchanger Temperature Sensor |
| C9 | Indoor Unit | Faulty Suction Air Temperature Sensor |
| E1 | Outdoor Unit | Outdoor Unit Circuit Board Fault |
| E5 | Outdoor Unit | OL Started (Overload Protection) |
| E6 | Outdoor Unit | Faulty Compressor Startup |
| E7 | Outdoor Unit | DC Fan Motor Fault |
| E8 | Outdoor Unit | Overcurrent Input |
| F3 | Outdoor Unit | High Temperature Discharge Pipe Control |
| F6 | Outdoor Unit | High Pressure Control (Cooling) |
| H0 | Outdoor Unit | Sensor Fault |
| H6 | Outdoor Unit | Operation Halt Due to Position Detection Sensor |
| H8 | Outdoor Unit | DC Current Sensor Fault |
| H9 | Outdoor Unit | Faulty Suction Air Temperature Sensor |
| J3 | Outdoor Unit | Faulty Discharge Pipe Temperature Sensor |
| J6 | Outdoor Unit | Faulty Heat Exchanger Temperature Sensor |
| L3 | Outdoor Unit | Electrical Parts Heat Fault |
| L4 | Outdoor Unit | High Temperature at Inverter Heatsink |
| L5 | Outdoor Unit | Output Overcurrent |
| P4 | Outdoor Unit | Faulty Inverter Heatsink Temperature Sensor |