Self-Diagnosis Function - LG MULTI V IV PRO JRUN180LLS4 Installation Manual

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 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,3rd LED of 7-segment indicates error number, 4th LED indicates unit number.
Ex)
No. of Error Compressor
Error No.
Display
0 1 - Air temperature sensor of indoor unit
0 2 - Inlet pipe temperature sensor of indoor unit
Communication error : wired remote
0 3 -
controller ↔ indoor unit
0 4 - Drain pump
Communication error : outdoor unit ↔
0 5 -
indoor unit
Outlet pipe temperature sensor of indoor
0 6 -
unit
0 9 - Indoor EEPROM Error
1 0 - Poor fan motor operation
1 Master Outdoor Unit Inverter Compressor IPM Fault
2 Slave1 Outdoor Unit Inverter Compressor IPM Fault Slave1 Outdoor Unit Inverter Compressor Drive IPM Fault
2 1
3 Slave2 Outdoor Unit Inverter Compressor IPM Fault Slave2 Outdoor Unit Inverter Compressor Drive IPM Fault
4 Slave3 Outdoor Unit Inverter Compressor IPM Fault Slave3 Outdoor Unit Inverter Compressor Drive IPM Fault
Inverter Board Input Over Current(RMS)
1
of Master Outdoor Unit
Inverter Board Input Over Current(RMS)
2
of Slave1 Outdoor Unit
2 2
Inverter Board Input Over Current(RMS)
3
of Slave2 Outdoor Unit
Inverter Board Input Over Current(RMS)
4
of Slave3 Outdoor Unit
* Refer to the Indoor manual for some Indoor Error code.
Repeat
No. of Error Unit
Title
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 outdoor 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
Master Outdoor Unit Inverter Compressor Drive IPM Fault
Master Outdoor Unit Inverter Board Input Current excess
(RMS)
Slave1 Outdoor Unit Inverter Board Input Current excess
(RMS)
Slave2 Outdoor Unit Inverter Board Input Current excess
(RMS)
Slave3 Outdoor Unit Inverter Board Input Current excess
(RMS)
ELECTRICAL WIRING
Cause of Error
79