LG AUUQ54GH1 - Page 57

- 57 -
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Part 4 Trouble Shooting
Table 1
Table 1
Model.
Resistance(Ω) at 20°C
AUUQ18GH1/AUUQ21GH1/AUUQ24GH1(ATUQ18GPLE3/ ATUQ21GPLE3/ ATUQ24GNLE3)
(AVUQ18GJLA0/ AVUQ21GJLA0 / AVUQ24GJLA0)
(ABUQ18GHLA0/ ABUQ21GHLA0/ ABUQ24GGLA0)
(ABUQ18GL2A0/ ABUQ21GL2A0/ ABUQ24GL3A0)
U-V 1.040(at25℃)
V-W 1.040(at25℃)
W-U 1.040(at25℃)
AUUQ36GH1
(ATUQ36GMLE3)
(AVUQ36GKLA0)
(ABUQ36GGLA0)
U-V 0.628(at 25˚C)
V-W 0.628(at 25˚C)
W-U 0.628(at 25˚C)
AUUQ42GH1/ AUUQ48GH1/ AUUQ54GH1
(ATUQ42GMLE3/ ATUQ48GMLE3/ ATUQ54GMLE3)
(AVUQ42GLLA0/ AVUQ48GLLA0/ AVUQ54GLLA0)
(ABUQ42GRLA0/ ABUQ48GRLA0/ ABUQ54GRLA0)
U-V 0.438(at 25˚C)
V-W 0.438(at 25˚C)
W-U 0.438(at 25˚C)
1. Remove the connectors to the PCB.
2. Measure the resistance between the lines of each terminal of the com-
pressor. (Refer to Table 1)
3. Measure the resistance between the each terminal and the
chassis(pipe) of the compressor. (Refer to Table 2)
4. If the measurements are distinctively different from Table 1 and 2, the
compressor is decided to be burned.
Model
Resistance(Ω) at 20°C
Terminal Inverter comp.
AUUQ18GH1 /AUUQ21GH1/ AUUQ24GH1
(ATUQ18GPLE3/ ATUQ21GPLE3/ ATUQ24GNLE3)
(AVUQ18GJLA0/ AVUQ21GJLA0 / AVUQ24GJLA0)
(ABUQ18GHLA0/ ABUQ21GHLA0/ ABUQ24GGLA0)
(ABUQ18GL2A0/ ABUQ21GL2A0/ ABUQ24GL3A0)
U-GND
1MΩ ↑
V-GND
1MΩ ↑
W-GND
1MΩ ↑
AUUQ36GH1
(ATUQ36GMLE3)
(AVUQ36GKLA0)
(ABUQ36GGLA0)
U-GND
2MΩ
V-GND
2MΩ
W-GND
2MΩ
AUUQ42GH1/ AUUQ48GH1/ AUUQ54GH1
(ATUQ42GMLE3/ ATUQ48GMLE3/ ATUQ54GMLE3)
(AVUQ42GLLA0/ AVUQ48GLLA0/ AVUQ54GLLA0)
(ABUQ42GRLA0/ ABUQ48GRLA0/ ABUQ54GRLA0)
U-GND
2MΩ
V-GND
2MΩ
W-GND
2MΩ
• Verifying compressor burn