Indoor unit malfunction For floor standing
Indoor EEPROM malfunction E0
Communication malfunction between indoor and outdoor units E1
Open or short circuit of T1 temperature sensor E4
Open or short circuit of T2 temperature sensor E5
Refrigerant leakage detection EC
Outdoor unit is faulty (for old communication protocol) Ed
Overcurrent protection (For some units) F0
Open or short circuit of T4 temperature sensor F1
Open or short circuit of T3 temperature sensor F2
Open or short circuit of T5 temperature sensor F3
Outdoor EEPROM malfunction (For some units) F4
Open or short circuit of T2B temperature sensor F6
IPM module malfunction P0
Over voltage or over low voltage protection P1
High temperature protection of top of compressor P2
Too low ambient temperature protection P3
Inverter compressor drive protection P4
Sensor of outdoor IGBT is faulty P7
For Other Type
O (on) X(off) ☆(flash)
Malfunction = Indoor EEPROM malfunction
Error Code = E0
Timer Lamp = X
Operation Lamp ( Flashes ) = 1
Malfunction = Communication malfunction between indoor and outdoor units
Error Code = E1
Timer Lamp = X
Operation Lamp ( Flashes ) = 2
Malfunction = Open or short circuit of T1 temperature sensor
Error Code = E4
Timer Lamp = X
Operation Lamp ( Flashes ) = 5
Malfunction = Open or short circuit of T2 temperature sensor
Error Code = E5
Timer Lamp = X
Operation Lamp ( Flashes ) = 6
Malfunction = Refrigerant leakage detection
Error Code = EC
Timer Lamp = X
Operation Lamp ( Flashes ) = 7
Malfunction = Water level alarm
Error Code = EE
Timer Lamp = X
Operation Lamp ( Flashes ) = 8
Malfunction = Communication error between master and slave unit (for twins system)
Error Code = E8
Timer Lamp = X
Operation Lamp ( Flashes ) = 9
Malfunction = Another indoor unit malfunction (for twins system)
Error Code = E9
Timer Lamp = X
Operation Lamp ( Flashes ) = 10
Malfunction = Outdoor unit is faulty (for old communication protocol)
Error Code = Ed
Timer Lamp = X
Operation Lamp ( Flashes ) = 11
Malfunction = Overcurrent protection (For some units)
Error Code = F0
Timer Lamp = O
Operation Lamp ( Flashes ) = 1
Malfunction = Open or short circuit of T4 temperature sensor
Error Code = F1
Timer Lamp = O
Operation Lamp ( Flashes ) = 2
Malfunction = Open or short circuit of T3 temperature sensor
Error Code = F2
Timer Lamp = O
Operation Lamp ( Flashes ) = 3
Malfunction = Open or short circuit of T5 temperature sensor
Error Code = F3
Timer Lamp = O
Operation Lamp ( Flashes ) = 4
Malfunction = Outdoor EEPROM malfunction (For some units)
Error Code = F4
Timer Lamp = O
Operation Lamp ( Flashes ) = 5
Malfunction = Communication error between auto-lifting panel and slim cassette (For slim cassette with auto-lifting panel)
Error Code = F7
Timer Lamp = O
Operation Lamp ( Flashes ) = 8
Malfunction = Auto-lifting panel is faulty (For slim cassette with auto-lifting panel)
Error Code = F8
Timer Lamp = O
Operation Lamp ( Flashes ) = 9
Malfunction = Auto-lifting panel is not closed (For slim cassette with auto-lifting panel)
Error Code = F9
Timer Lamp = O
Operation Lamp ( Flashes ) = 10
Malfunction = IPM module malfunction
Error Code = P0
Timer Lamp = ☆
Operation Lamp ( Flashes ) = 1
Malfunction = Over voltage or over low voltage protection
Error Code = P1
Timer Lamp = ☆
Operation Lamp ( Flashes ) = 2
Malfunction = High temperature protection of top of compressor
Error Code = P2
Timer Lamp = ☆
Operation Lamp ( Flashes ) = 3
Malfunction = Too low ambient temperature protection
Error Code = P3
Timer Lamp = ☆
Operation Lamp ( Flashes ) = 4
Malfunction = Inverter compressor drive protection
Error Code = P4
Timer Lamp = ☆
Operation Lamp ( Flashes ) = 5
Malfunction = Low pressure protection of compressor
Error Code = P6
Timer Lamp = ☆
Operation Lamp ( Flashes ) = 7
Malfunction = Sensor of outdoor IGBT is faulty
Error Code = P7
Timer Lamp = ☆
Operation Lamp ( Flashes ) = 8
Outdoor Unit Malfunction
E1 Communication malfunction between indoor and outdoor units
F0 Overcurrent protection
F1 Ambient temperature sensor (T4) is malfunction
F2 Outdoor heat-exchanger temperature sensor (T3) is malfunction
F3 Discharge temperature sensor (T5) is malfunction
F4 Outdoor EEPROM is malfunction
P0 IPM module protection
P1 Voltage protection (too high or too low)
P3 Protection of ultra-low ambient temperature
P4 Rotor position protection of compressor
J0 High temperature protection of indoor heat exchanger in heating mode
J1 High temperature protection of outdoor heat exchanger in cooling mode
J2 High discharge temperature protection
J3 PFC module protection
J4 Communication error between outdoor main chip and compressor driven chip IR341
J5 High pressure protection
J6 Low pressure protection
P7 Sensor of outdoor IGBT is faulty
J8 AC voltage protection
In low ambient cooling mode, the LED displays“LC” or alternative displays between running frequency
and “LC”(each displays 0.5s)
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