LG Multi V Service Manual

- 102 -
Copyright © 2020 LG Electronics Inc.
All rights reserved. Only training and service purposes.
Self-diagnosis function
Display Title Cause of Error
Outdoor unit related error
1 1 3
Outdoor Unit Liquid pipe Temperature Sensor
Error
Liquid pipe temperature sensor of Outdoor Unit is
open or short
1 1 5
Outdoor Unit Subcooling Outlet Temperature
Sensor Error
Outdoor Unit Subcooling Outlet Temperature
Sensor Error
1 5 0
Outdoor Unit Discharge Super
Heat Low
Outdoor Unit LowDischarge Super
Heat for 5 minutes
1 5 1
Failure of operation mode conversion at
Outdoor Unit
Failure of operation mode conversion at Outdoor
Unit
HR unit related error
2 0 0 1 Searching pipe Error Failure of automatic addressing of valves
2 0 1
C +
#HR
HR unit1 Liqiud sensor error Liquid pipe sensor of HR unit open or short
2 0 2
C +
#HR
HR unit1 Sub Cooling Pipe In sensor error
Sub Cooling Pipe In sensor of HR unit open or
short
2 0 3
C +
#HR
HR unit1 Sub Cooling Pipe Out sensor error
Sub Cooling Pipe Out sensor of HR unit. open or
short
2 0 4
C +
#HR
Communication error Failing to receive HR unit signal at outdoor unit
2 0 5
C +
#HR
Communication error between HR unit and the
upgraded 485 modem.
4 series upgraded 485 communication error
between HR unit and HR unit modem
2 0 6
C +
#HR
Duplicate address error of HR unit
When the HR unit address is set duplicated at the
4 series upgraded 485 communication
2 0 7
C +
#HR
Communication error between Master and
Slave Main PCB of HR Unit
When fail to communication between Master and
Slave Main PCB of HR Unit
2 0 8
C +
#HR
Communication error of EEPROM of HR Unit
When fail to communication of EEPROM of HR
Unit
C : HR unit
# : HR unit Number
# HR is the information in outdoor unit Main PCB segment
(HR unit is excluded from #HR related display on PCB segment)
CAUTION
• To use open line 485 communication (9,600 bps communication), you need to use a product in which all of the indoor
unit/HR unit/outdoor unit/accessory model can use (9,600 bps communication).

LG Multi V Specifications

General

Type	VRF (Variable Refrigerant Flow)
Compressor Type	Scroll
Refrigerant	R410A
Energy Efficiency	High
Control System	Centralized and individual control options
Indoor Units	Multiple types available (e.g., ceiling cassette, wall-mounted, ducted)