LG CQ09 NA0 - Page 109

- 109 -
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4. Trouble Shooting
1VSQPTF
$IFDLJOH#SJEF%JPEFQBSUTGPSGBVMU
*UFNTGPSDIFDLJOH
$IFDLJOH1'$.GPSEBNBHF
⶯ How to check PFCM IGBT (Diode Mode)
3FNPWFUIFDPOOFDUPSGSPN1$#
4FUUIF.VMUJ5FTUFSBT%JPEF7PMUBHF.FBTVSFNFOU.PEF

.FBTVSFUIFWPMUBHFTPG1_31_41_5BTTIPXOJO'JH
.FBTVSFUIFWPMUBHFTPG5_/V4_/W3_/XBTTIPXOJO'JH
*GUIFNFBTVSFNFOUTBSFTJHOJGJDBOUMZEJGGFSFOUGSPNUIFMFWFMTTIPXOJOUIFGJHVSFTUIF*1.JTEFFNFEUP
CFEBNBHFE
<'JH> <'JH>
Sequence of
Measurement
Measurement
Normal
Standards
1 P-U 0.4V~0.6V
2 P-V 0.4V~0.6V
3 P-W 0.4V~0.6V
Sequence of
Measurement
Measurement
Normal
Standards
1 U-Nu 0.4V~0.6V
2 V-Nv 0.4V~0.6V
3 W-Nw 0.4V~0.6V
$IFDLJOH1'$.1$#"L8
6.7 Troubleshooting Outdoor Error
CH 23 (DC Link Voltage Low)