Samsung Electronics
4-1
4. Troubleshooting
4-1 Display Error and Check Method
4-1-1
Indoor unit
Q
AJ009JNNDCH/AJ012JNNDCH/AJ018JNNDCH
Abnormal conditions
LED lamp display
Remarks
Operation
Defrost
Timer
Filter
Power reset
X
X
X
Error of temperature sensor in the indoor unit
(Open/Short)
X
X
X
Error of heat exchanger sensor in the indoor unit
(Open/Short)
X
X
Error of fan motor in the indoor unit
X
X
X
Error of the outdoor temperature sensor
Error of the condensor temperature sensor
Error of the discharge temperature sensor
X
X
No communication for 2 minutes between
indoor and outdoor unit
(communication error for more than 2minutes)
X
X
Error of outdoor unit
X
Detection of the float switch
X
X
EEPROM error
X
EEPROM option error
Motion detect sensor error
X
X
Mixed operation error
X
X
X
◆
If you turn off the air conditioner when the LED is flickering, the LED is also turned off.
●
On
Flickering X Off