2-36. E: A5. Low pressure error (Outdoor unit)....................................................................03-54
3. Troubleshooting without error code........................................................03-56
3-1. Indoor unit—No power..................................................................................................03-56
3-2. Outdoor unit—No power...............................................................................................03-57
3-3. No operation (Power is on)...........................................................................................03-58
3-4. No cooling/No heating ..................................................................................................03-59
3-5. Abnormal noise.............................................................................................................03-61
3-6. Water leaking................................................................................................................03-62
4. Troubleshooting with error code (For wireless LAN adapter)...............03-63
4-1. E: 18. External communication error between indoor unit and WLAN adapter .............03-63
4-2. Wireless LAN adapter error ..........................................................................................03-64
4-3. Network communication error between wireless LAN router and WLAN adapter.........03-65
4-4. E: 18. Communication error..........................................................................................03-67
4-5. E: 18. Wireless LAN adapter non-energized.................................................................03-69
4-6. Mobile app setting method............................................................................................03-70
5. Service parts information .........................................................................03-75
5-1. Compressor..................................................................................................................03-75
5-2. Inverter compressor......................................................................................................03-76
5-3. Outdoor unit Electronic Expansion Valve (EEV) ...........................................................03-77
5-4. Indoor unit fan motor ....................................................................................................03-79
5-5. Outdoor unit fan motor..................................................................................................03-80
5-6. Active filter module .......................................................................................................03-81
5-7. IPM on transistor PCB ..................................................................................................03-83
5-8. Suction pressure sensor...............................................................................................03-85
6. Thermistor resistance values...................................................................03-86
6-1. Indoor unit ....................................................................................................................03-86
6-2. Outdoor unit..................................................................................................................03-87
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