LG AUUQ18GH1 Svc Manual page 57

Part 4 Trouble Shooting
• Verifying compressor burn
Table 1
AUUQ18GH1/AUUQ21GH1/AUUQ24GH1(ATUQ18GPLE3/ ATUQ21GPLE3/ ATUQ24GNLE3)
(AVUQ18GJLA0/ AVUQ21GJLA0 / AVUQ24GJLA0)
(ABUQ18GHLA0/ ABUQ21GHLA0/ ABUQ24GGLA0)
(ABUQ18GL2A0/ ABUQ21GL2A0/ ABUQ24GL3A0)
AUUQ36GH1
(ATUQ36GMLE3)
(AVUQ36GKLA0)
(ABUQ36GGLA0)
AUUQ42GH1/ AUUQ48GH1/ AUUQ54GH1
(ATUQ42GMLE3/ ATUQ48GMLE3/ ATUQ54GMLE3)
(AVUQ42GLLA0/ AVUQ48GLLA0/ AVUQ54GLLA0)
(ABUQ42GRLA0/ ABUQ48GRLA0/ ABUQ54GRLA0)
Table 1
AUUQ18GH1 /AUUQ21GH1/ AUUQ24GH1
(ATUQ18GPLE3/ ATUQ21GPLE3/ ATUQ24GNLE3)
(AVUQ18GJLA0/ AVUQ21GJLA0 / AVUQ24GJLA0)
(ABUQ18GHLA0/ ABUQ21GHLA0/ ABUQ24GGLA0)
(ABUQ18GL2A0/ ABUQ21GL2A0/ ABUQ24GL3A0)
AUUQ36GH1
(ATUQ36GMLE3)
(AVUQ36GKLA0)
(ABUQ36GGLA0)
AUUQ42GH1/ AUUQ48GH1/ AUUQ54GH1
(ATUQ42GMLE3/ ATUQ48GMLE3/ ATUQ54GMLE3)
(AVUQ42GLLA0/ AVUQ48GLLA0/ AVUQ54GLLA0)
(ABUQ42GRLA0/ ABUQ48GRLA0/ ABUQ54GRLA0)
Copyright ©2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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.
Model
- 57 -
Resistance(Ω) at 20°C
U-V 1.040(at25℃)
V-W 1.040(at25℃)
W-U 1.040(at25℃)
U-V 0.628(at 25˚C)
V-W 0.628(at 25˚C)
W-U 0.628(at 25˚C)
U-V 0.438(at 25˚C)
V-W 0.438(at 25˚C)
W-U 0.438(at 25˚C)
Resistance(Ω) at 20°C
Terminal Inverter comp.
1MΩ ↑
U-GND
1MΩ ↑
V-GND
1MΩ ↑
W-GND
U-GND 2MΩ
V-GND 2MΩ
W-GND 2MΩ
U-GND 2MΩ
V-GND 2MΩ
2MΩ
W-GND
LGE Internal Use Only