Troubleshooting Guide
- 87 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
40 CT sensor error
Error
No.
Error Type Error Point Main Reasons
Micom input voltage isn't
within 2.5V ±0.3V at initial
state of power supply
1. Input voltage abnormal (T-N)
2. ODU inverter PCB damage
(CT sensing part)
■ Error Diagnosis and Countermeasure Flow Chart
Is input voltage normal?
No
Yes
Recheck power and installation condition
Check
L~N phase voltage is 220V ±10%
→ Check connection condition and wiring if power is
abnormal
Is inverter PCB assembly normal?
No
Yes
Replace inverter PCB assembly
Measuring input voltage
Inverter PCB assembly
LGMV Part
To Next Page
Loading...
