4-10
Samsung Electronics
4-2 Item to check before diagnosis
4-2-1 Display Error mode
•
If an error occurs during the operation, one or more LED flickers and the operation is stopped except the LED.
•
If you re-operate the air conditioner, it operates normally at first, then detect an error again.
Abnormal conditions
LED lamp display (white)
Remarks
Power reset
X
X
X
Error of temperature sensor
in the indoor unit (Open/Short)
X
X
Error of heat exchanger sensor
in the indoor unit
X
X
X
Indoor fan motor is non-operative
Indoor fan motor is operating slowly
Indoor fan motor operates at an excessive speed
X
X
X
Indoor motor fan
error
Error of the outdoor temperature sensor
Error of the condensor temperature sensor
Error of the discharge temperature sensor
X
X
X
1 Indoor and outdoor unit time out
2 Abnormal data reception more than 60 packet
3 Indoor unit is not connected
4 Communication error between the outdoor unit
Main-Inverter Micom(After 1 minute of Main-
Inverter detection)
X
X
X
1 Indoor unit
error (Display is
unrelated with
operation)
2 Outdoor unit
error (Display is
unrelated with
operation)
Communication error between indoor units
X
X
[Self diagnosis] Power voltage detection between
indoor and outdoor unit communication cable
[Self diagnosis] Outdoor unit refrigerant leakage
(Gas leak)
[Self diagnosis] Outdoor fan restriction error
[Inverter] Inverter compressor operation failure
[Inverter] DC peak error
[Inverter] DC Link voltage 150V or less, 410V or
more
[Inverter] Compressor rotation error
[Inverter] Electric current error
[Inverter] DC Link sensor error
[Inverter] EEPROM READ/WRITE error
[Inverter] Inverter zerocrossing error
Setting the outdoor unit capacity option error
X
X
Error of setting option switches for optional
accessories
X
X
X
EEPROM error
X
X
EEPROM option error
MPI no feedback Error
X
X
X
X
: On, : Flickering, X : Off
If you turn off the air conditioner when the LED is flickering, the LED is also turned off.
