LG Multi V Service Manual

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All rights reserved. Only training and service purposes.
Self-diagnosis function
40
Inverter compressor CT
sensor error
Error
No.
Error Type Error Point Main Reasons
Micom input voltage isn't
within 2.5 V ±0.3 V at initial
state of power supply
1. Input voltage abnormal (L1(L) – L2(N))
2. ODU Inv. PCB damage
(CT sensing part)
n Error Diagnosis and Countermeasure Flow Chart
* Measuring input voltage
Is input voltage normal?
No
Yes
Recheck power and installation condition
Check
L1(L) – L2(N) phase voltage is 208 V(±10 %) or 230 V(±10 %)
→ Check connection condition and wiring if power is
abnormal
Is inverter PCB assembly normal?
No
Yes
Replace inverter PCB assembly

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)