LG CQ09 NA0 - Page 77

- 77 -
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4. Trouble Shooting
1VSQPTF
+VEHNFOUPGUIFGBVMUPGUIF
DPNQSFTTPS
*UFNTGPSDIFDLJOH
.FBTVSFNFOUPGJOTVMBUJPOSFTJTUBODF
CFUXFFOUIFDPNQSFTTPSBOEQBOFM
.FBTVSFNFOUPGQIBTFSFTJTUBODF
8JSJOH$IFDL
⶯ How to check the insulation resistance between the compressor and panel
⶯ How to check the U, V, and W phase resistance
.FBTVSFUIFSFTJTUBODFCFUXFFOBDPNQSFTTPSUFSNJOBM
BOEQBOFM
.FBTVSFUIFMJOFSFTJTUBODFCFUXFFOUIFDPNQSFTTPS
UFSNJOBMT
5VSOUIFTXJUDIPGUIFUFTUFSUPⲳ3FTJTUBODFNPEFBOEDIFDLUIFSFTJTUBODF
.FBTVSFUIFSFTJTUBODFCFUXFFOUIFUFSNJOBMT
ⲳⱕⲴNFBOTUIFTIPSUPGDPNQSFTTPSQIBTF3FQMBDFUIFDPNQSFTTPS
3FGFSUPUIFDPNQSFTTPSSFTJTUBODFTUBOEBSET
*GBOZEJTPSEFSJTGPVOENFBTVSFUIFMJOFSFTJTUBODFCFUXFFOUIFUFSNJOBMTPGUIFDPNQSFTTPSBTTIPXO
CFMPX
*GUIFDPNQSFTTPSJTGPVOEUPCFOPSNBMBOZDPNQSFTTPSDPOOFDUJPOXJSFNBZIBWFBGBVMU
Term in al
Insulation
Resistance
U-panel ŧ 10MѤ
V-panel ŧ 10MѤ
W-panel ŧ 10MѤ
Model GKT141MAC GKT176MAB GJT240MAA GPT442MBA GPT442MAA
Windings
Resistance
( at 25Ⳅ )
U-V 1.040 ±7% Ѥ 1.125±7% Ѥ 0.628 ±7% Ѥ 0.438 ±7% Ѥ 0.845 ±7% Ѥ
V-W 1.040 ±7% Ѥ 1.125±7% Ѥ 0.628 ±7% Ѥ 0.438 ±7% Ѥ 0.859 ±7% Ѥ
W-U 1.040 ±7% Ѥ 1.125±7% Ѥ 0.628 ±7% Ѥ 0.438 ±7% Ѥ 0.864 ±7% Ѥ
Compressor
terminals
Compressor
terminals
C/BoxSash
Comp Pipe
$IFDLJOHDPNQSFTTPSQIBTFSFTJTUBODF
6.7 Troubleshooting Outdoor Error
CH 21 (DC Peak / Comp IPM Fault)