Models:
KSFU70XFAN1 / KSRU70HFAN1
KSFU120XFAN3 / KSRU120HFAN3
P4 - evaporator temperature protection
P5 - condenser temperature protection
P7 - discharge temperature too high, compressor protection enabled
P9 - the outside temperature is too low, the protection will automatically turn off when it is increased
P10 - output pressure protection
P11 - protection against suction pressure
P12 - overcurrent protection
E1 - internal air temperature sensor T1 closed / torn
E2 - evaporator temperature sensor T2 closed / torn
E3 - condenser temperature sensor T3 closed / torn
E4 - outdoor temperature sensor closed T4 closed / broken
E5 - communication between the indoor and outdoor units is broken
E6 - protection of the outdoor unit
E10 - compressor suction pressure error
E13 - compressor phase error
E14 - incorrect phasing of the compressor
HS - start defrost
Models:
KSGH / KSRH21CFDN1 KSGH / KSRH26CFDN1
KSGH / KSRH35CFDN1 KSGH / KSRH53CFDN1
KSGH / KSRH21HFDN1 KSGH / KSRH26HFDN1
KSGH / KSRH35HFDN1 KSGH / KSRH53HFDN1
E1 - EEPROM error (non-volatile memory on the board)
E2 - zero crossing error
E3 - abnormal fan speed
E4 - compressor overcurrent protection has tripped 4 times
E5 - indoor air temperature sensor closed / broken
E6 - Evaporator temperature sensor closed / broken
Models:
KSFU / KSRU76HFDN3
KSFU / KSRU140HFDN3
P4 - thermal protection of the evaporator of indoor unit
P5 - thermal protection of the condenser of the outdoor unit
P9 - protection of the defrost function or the creation of a comfortable airflow
E1 - open or short circuit of the temperature sensor circuit T1
E2 - evaporator temperature sensor T2 closed / torn
E3 - condenser temperature sensor T3 closed / torn
E6 - outdoor unit protection
Channel-type air conditioners KSKT-HF
E0 - Room temperature sensor defective
E1 - the evaporator temperature sensor is defective
E2 - outdoor unit temperature sensor defective
E3 - outdoor unit defective
E4 - the drainage pump temperature sensor is defective
E5 - EEPROM error
E6 - rising water level