Display Error Mode - Samsung AC026MNJDKH/EU Service Manual

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
Power reset
Error of temperature sensor
in the indoor unit (Open/Short)
Error of heat exchanger sensor
in the indoor unit
Indoor fan motor is non-operative
Indoor fan motor is operating slowly
Indoor fan motor operates at an excessive speed
Error of the outdoor temperature sensor
Error of the condensor temperature sensor
Error of the discharge temperature sensor
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)
Communication error between indoor units
[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
Error of setting option switches for optional
accessories
EEPROM error
EEPROM option error
MPI no feedback Error
: On, : Flickering, X : Off
If you turn off the air conditioner when the LED is flickering, the LED is also turned off.
4-10
LED lamp display (white)
X X X
X X
X X
X
X X
X
X
X
X X
Remarks
X
Indoor motor fan
X X
error
X
1 Indoor unit
error (Display is
unrelated with
operation)
X X
2 Outdoor unit
error (Display is
unrelated with
operation)
X X
X X
X X
X
X X
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