LG Multi V Service Manual

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All rights reserved. Only training and service purposes.
Self-diagnosis function
n Error diagnosis and countermeasure flow chart
Sensor connection to PCB
is normal?
Is the resistance of
sensor normal?*
Insert sensor connector to PCB properly
Replace sensor
Replace corresponding outdoor PCB
Yes
No
No
Is sensor resistance
value same as temperature
value of LGMV?
Yes
Yes
No
Replace corresponding sensor
* Error is generated if the resistance is more than 5 M(open) and less than 2 k (short)
Note: Standard values of resistance of sensors at different temperatures (5 % variation)
10 C = 362 k : 25 C= 200 k : 50 C= 82 k : 100 C= 18.5 k
Check the resistance
inverter compressor
discharge temperature
sensor
Error No. Error Type Error Point Main Reasons
41
Compressor1 dis-
charge pipe tempera-
ture sensor error
Sensor measurement
value is abnormal
(Open/Short)
1. Defective connection of the compressor1 discharge
pipe temperature sensor
2. Defective discharge pipe compressor sensor of the
compressor1 (open/short)
3. Defective outdoor PCB

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)