Singer E1
E1 on a Singer AC means the indoor and outdoor units have lost communication. The data cable between them is d…
Air Conditioner Error Codes
AC error codes, meaning and fixes across every brand.
Blue Star
Carrier
Chigo
Daikin
Fujitsu
Godrej
Gree
Haier
Hisense
Hitachi
LG
Lloyd
Midea
Mitsubishi
Panasonic
Samsung
Sharp
TCL
Toshiba
O General
Singer
Vision
Voltas
Walton
Singer E3
E3 on a Singer AC means the indoor fan motor is running at an incorrect speed or has stopped. The board detect…
Singer E4
E4 on a Singer AC means the indoor room temperature sensor (return-air thermistor) has an open or short circui…
Singer E5
E5 on a Singer AC means the indoor coil (evaporator pipe) temperature sensor has an open or short circuit. The…
Singer EC
EC on a Singer AC means the system has detected low refrigerant — the unit is likely leaking gas. The compress…
Singer F0
F0 on a Singer AC means the outdoor unit has detected a current overload — the compressor is drawing more powe…
Singer F1
F1 on a Singer AC means the outdoor ambient temperature sensor (T4 thermistor) has an open or short circuit.
Singer F2
F2 on a Singer AC means the outdoor condenser coil temperature sensor (T3 thermistor) has an open or short cir…
Singer F3
F3 on a Singer AC means the compressor discharge temperature sensor (T5 thermistor) on the outdoor unit has an…
Singer EE
EE on a Singer AC means the high water level alarm has triggered — the condensate drain pan is overflowing, us…
Walton E1
E1 on a Walton AC means communication between the indoor and outdoor units has failed. The indoor unit cannot…
Walton E3
E3 on a Walton AC means the indoor fan motor is running at an incorrect speed or has stopped. The control boar…
Walton E4
E4 on a Walton AC means the indoor room temperature sensor (return-air thermistor) has an open or short circui…
Walton E5
E5 on a Walton AC means the indoor coil (evaporator pipe) temperature sensor has an open or short circuit.
Walton EC
EC on a Walton AC means the system has detected low refrigerant — the unit is likely leaking gas. The compress…
Walton F0
F0 on a Walton AC means the outdoor unit has detected a current overload — the compressor or system is drawing…
Walton F1
F1 on a Walton AC means the outdoor ambient temperature sensor (T4 thermistor) has an open or short circuit.
Walton F2
F2 on a Walton AC means the outdoor condenser coil temperature sensor (T3 thermistor) has an open or short cir…
Walton F3
F3 on a Walton AC means the compressor discharge temperature sensor (T5 thermistor) on the outdoor unit has an…
Walton F4
F4 on a Walton AC means the outdoor unit EEPROM (memory chip) has a read/write error. The PCB cannot load its…
LG CH01
CH01 on an LG AC means the indoor room temperature sensor (return-air thermistor) has an open or short circuit…
LG CH02
CH02 on an LG AC means the indoor pipe (evaporator) temperature sensor has an open or short circuit. The unit…
LG CH05
CH05 on an LG AC means the indoor and outdoor units have lost communication. The indoor unit cannot send or re…
LG CH10
CH10 (also shown as CA on some models) means the indoor fan motor is not running or the discharge temperature…
LG CH21
CH21 means the inverter circuit in the outdoor unit has detected excessive DC current. This is a serious elect…
LG CH22
CH22 means the compressor itself is drawing excessive current, triggering the overcurrent protection relay.
LG CH25
CH25 means the outdoor unit has detected an incoming power supply error — voltage is outside the acceptable ra…
LG CH26
CH26 means the inverter compressor has a fault — typically a winding failure, ground fault, or the compressor…
LG CH27
CH27 means the Intelligent Power Module (IPM) on the outdoor inverter PCB has failed or is overheating.
LG CH32
CH32 means the compressor discharge temperature has exceeded approximately 105 degrees C. The unit stops to pr…
LG CH34
CH34 means the high-pressure switch on the outdoor unit has tripped — refrigerant pressure on the discharge si…
LG CH35
CH35 means the low-pressure sensor or switch has detected abnormally low refrigerant pressure — the system may…
LG CH38
CH38 means the system has detected low refrigerant pressure or an electrical fault. The AC stops to protect th…
LG CH41
CH41 means the inverter compressor discharge temperature sensor (thermistor) on the outdoor unit is faulty — o…
LG CH44
CH44 means the outdoor ambient air temperature thermistor is faulty — open or short circuit.
LG CH45
CH45 means the condenser coil outlet temperature sensor (thermistor) on the outdoor unit has an open or short…
LG CH47
CH47 means the electronic expansion valve (EEV) or its thermistor sensor on the outdoor unit is faulty.
LG CH61
CH61 means the outdoor condenser coil temperature has exceeded approximately 65 degrees C. The unit stops to p…
LG CH62
CH62 means the inverter heat-sink temperature sensor (thermistor) on the outdoor PCB is faulty — open or short…
LG CH67
CH67 (also shown as EF on some models) means the outdoor fan motor is not running or is locked. Without the ou…