LG MULTI V Service Manual page 124

Self-diagnosis function
Error
Error Type
No.
Inverter compressor CT
40
sensor error
n Error Diagnosis and Countermeasure Flow Chart
Is input voltage normal?
Yes
Is inverter PCB assembly normal?
Yes
Recheck power and installation condition
* Measuring input voltage
Error Point
Micom input voltage isn't
within 2.5 V ±0.3 V at initial
state of power supply
Check
No
L1(L) – L2(N) phase voltage is 208 V(±10 %) or 230 V(±10 %)
→ Check connection condition and wiring if power is
abnormal
No
Replace inverter PCB assembly
- 124 -
Main Reasons
1. Input voltage abnormal (L1(L) – L2(N))
2. ODU Inv. PCB damage
(CT sensing part)
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