LG Therma V AHBW A0 Series User Manual

Trouble Shooting Guide
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Copyright ©2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Is input voltage normal?
No
Yes
Yes
Yes
Recheck power and installation condition
Check
R-S,S-T,T-R phase are 380 V ± 10%
R-N,S-N,T-N phase are 220 V ± 10%
’ Check connection condition and wiring if power is
abnormal
Is inverter PCB assembly
power connection normal?
No
Check connection from terminal block to inverter PCB
assembly CN-L1(R), CN-L2(S), CN-L3(T)
’ wiring again if abnormality found
Is inverter PCB assembly normal?
No
Check inverter PCB assembly IPM normality
’ Replace inverter PCB assembly
23
28
DC Link
Low voltage.
DC Link
High voltage
• 1ph : DC link volt. is 140
V DC
• 3ph : DC link volt. is 250
V DC
• 1ph : DC link volt. is 140
V DC
• 3ph : DC link volt. is 250
V DC
• Check the power source.
• Check the components.
• Check the power source.
• Check the component.
※ It is related to “AHBW**8A0” model .
Display
code
Title Cause of error Check point & Normal condition
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LG Therma V AHBW A0 Series Specifications

General

Brand	LG
Model	Therma V AHBW A0 Series
Category	Air Conditioner
Language	English