LG ARWB200LAS4 Installation Manual page 39

Self-Diagnosis Function
Error Indicator
- This function indicates types of failure in self-diagnosis and occurrence of failure for air condition.
- Error mark is displayed on display window of indoor units and wired remote controller, and 7-segment LED of outside unit control board as
shown in the table.
- If more than two troubles occur simultaneously, lower number of error code is first displayed.
- After error occurrence, if error is released, error LED is also released simultaneously.
Error Display
1st,2nd,3rd LED of 7-segment indicates error number, 4th LED indicates unit number.(* = 1: Master, 2: Slave 1, 3: Slave 2, 4: Slave 3)
Ex)
Repeat
Error No. of Unit
Error No. of Compressor
Error No.
* Refer to the DX-Venitilation manual for DX-Venitilation error code.
Display
Air temperature sensor of indoor unit
0 1 -
Inlet pipe temperature sensor of indoor unit
0 2 -
Communication error : wired remote controller in-
0 3 -
door unit
Drain pump
0 4 -
Communication error : outside unit
0 5 -
Outlet pipe temperature sensor of indoor unit
0 6 -
Indoor EEPROM Error
0 9 -
Poor fan motor operation
1 0 -
Inlet Air temperature sensor of FAU
1 7 -
Master outside unit inverter compressor IGBT Fault
2 1 *
Inverter Board Input Over Current(RMS) of Master
2 2 *
outside Unit
Master outside unit inverter compressor DC link
2 3 *
under-voltage
Master outside unit high pressure switch
2 4 *
Master outside unit input voltage over-
2 5 *
voltage/under-voltage
Master outside unit inverter compressor operation
2 6 *
failure error
Master outside unit inverter DC link over-voltage
2 8 *
error
Master outside unit inverter compressor overcurrent
2 9 *
Master outside unit inverter compressordischarge
temperature over-rise
3 2 *
Master outside unit high pressure over-rise
3 4 *
Title
indoor unit
Cause of Error
Air temperature sensor of indoor unit is open or short
Inlet pipe temperature sensor of indoor unit is open or short
Failing to receive wired remote controller signal in indoor unit PCB
Malfunction of drain pump
Failing to receive outside unit signal in indoor unit PCB
Outlet pipe temperature sensor of indoor unit is open or short
In case when the serial number marked on EEPROM of Indoor unit
is 0 or FFFFFF
Disconnecting the fan motor connector/Failure of indoor fan motor
lock
Air temperature sensor of indoor unit is open or short
Master outside unit inverter compressor drive IPM error
Master Outside Unit Inverter Board Input Current excess (RMS)
DC voltage is not charged after master outside unit operating relay
is turned on
Compressor maintenance by master outside unit high pressure switch
Flow rate insufficiency or flow switch trouble of master outside unit
Master outside unit input voltage over-voltage or under-voltage
Initial operation failure due to master outside unit inverter compres-
sor error
Compressor turned Off due to master outside unit inverter DC volt-
age over-charge
Master outside unit inverter compressor error or operating compo-
nent (IGBT) error operation
Compressor turned off due to master outside unit inverter compres-
sor discharge temperature over-rise Flow rate insufficiency or flow
switch trouble of master outside unit
Compressor turned off due to master outside unit high pressure
over-rise Flow rate insufficiency or flow switch trouble of master
outside unit
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