LG Multi V Series Svc Manual

- 10 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
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. Indicates unit number.
(* = 1:Master, 2 : Slave 1, 3 : Slave 2)
Ex) 211 : No.21 error of master unit
213 : No.21 error of slave2
1051 : No.105 error of master unit
h Refer to the DX-Venitilation manual for DX-Venitilation error code
(repetition)
Error Compressor
Error number
Unit(1:Master, 2:Slave 1, 3:Slave 2)
Display Title Cause of Error
Indoor unit related error
0 1 - Air temperature sensor of indoor unit Air temperature sensor of indoor unit is open or short
0 2 - Inlet pipe temperature sensor of indoor unit Inlet pipe 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 4 - Drain pump Malfunction of drain pump
0 5 -
Communication error : Indoor communication
PCB ↔ indoor unit
Indoor Unit PCB did not receive signal from Indoor
communication PCB for over 3 minutes continuously
0 6 - Outlet pipe temperature sensor of indoor unit Outlet pipe temperature sensor of indoor unit is open or short
0 9 - Indoor EEPROM Error
In case when the serial number marked on EEPROM of
Indoor unit is 0 or FFFFFF
1 0 - Poor fan motor operation
Disconnecting the fan motor connector / Failure of indoor
fan motor lock
2 3 0 Refrigerant leakage sensing error Refrigerant leakage sensing error and sensor defect error
2 3 7
Communication defect in indoor communication
PCB ↔ outdoor communication PCB
Indoor communication PCB did not receive signal from outdoor
communication PCB for over 3 minutes continuously
2 3 8
Communication error in outdoor communication
PCB ↔ outdoor unit
Outdoor communication PCB did not receive communication sig-
nal from outdoor unit for over 3 minutes continuously
7. Self-diagnosis function

LG Multi V Series Specifications

General

Compressor Type	Inverter Scroll Compressor
Inverter Technology	Yes
Type	Variable Refrigerant Flow (VRF)
Refrigerant	R410A
Energy Efficiency	High
COP	Up to 4.5 (depending on model)
Control	Remote Control
Indoor Unit Options	Ceiling Cassette, Ceiling Concealed Duct, Wall Mounted
Warranty	Varies by region