LG AK-Q180BC00, Installation Manual

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3 4
INSTALLATION OF UNIT
ENGLISH
Display Title Cause of Error
Indoor unit related error
0 1 -
Air temperature sensor of indoor unit
(only return air sensor was installed)
Air temperature sensor of indoor unit is open or short
0 3 -
Communication error : wired remote
controller
÷
indoor unit
Failing to receive wired remote controller signal in indoor
unit PCB
0 5 -
Communication error : outdoor unit
÷
indoor unit
Failing to receive outdoor unit signal in indoor unit PCB
0 9 - Indoor EEPROM Error
In case when the serial number marked on EEPROM of
Indoor unit is 0 or FFFFFF
Outdoor unit related error
2 1
1 Master Inverter Compressor IPM Fault Master Inverter Compressor Drive IPM Fault
2
Slave Inverter Compressor IPM Fault
(For 20/23/25RT Only)
Slave Inverter Compressor Drive IPM Fault
2 2
1
Inverter Board Input Over Current (RMS)
of Master
Master Inverter Board Input Current excess (RMS)
2
Inverter Board Input Over Current (RMS)
of Slave (For 20/23/25RT Only)
Slave Inverter Board Input Current excess (RMS)
2 3
1
Master Inverter Compressor DC link
Low Voltage DC charging is not performed at Master after starting
relay turn on.
2
Slave Inverter Compressor DC link Low
Voltage (For 20/23/25RT Only) DC charging is not performed at Slave after starting
relay turn on.
2 4
1 Master High Pressure Switch System is turned off by Master high pressure switch.
2
Slave High Pressure Switch (For
20/23/25RT Only)
System is turned off by Slave high pressure switch.
2 5
1
Master Unit Input Voltage High/ Low
Voltage
Master Unit input voltage is abnormal
2
Slave Unit Input Voltage High/ Low
Voltage (For 20/23/25RT Only)
Slave Unit input voltage is abnormal
2 6
1 Master Inverter Compressor Start Failure
The First Start Failure by Master Inverter Compressor
Abnormality
2
Slave Inverter Compressor Start Failure
(For 20/23/25RT Only) The First Start Failure by Slave Inverter Compressor
Abnormality
2 8
1
Master Inverter DC link High
Voltage System is turned off by Master DC Voltage Over
Charging
2
Slave Inverter DC link High
Voltage (For 20/23/25RT Only)
System is turned off by Slave DC Voltage Over Charging
2 9
1
Master Inverter Compressor Over
Current
Master Inverter Compressor Fault OR Drive Fault
2
Slave Inverter Compressor Over Current
(For 20/23/25RT Only)
Slave Inverter Compressor Fault OR Drive Fault
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 wired remote controller, and 7-segment LED of outdoor 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 LED of 7-segment indicates error number, 3rd LED indicates unit number.
Ex) 211 : No.21 error of master unit, 862 : No.86 error of Slave Unit,
011
→
051 : No.105 error of Master Unit