LG AH-W096A0 Service Manual page 70

Trouble Shooting
Display
Title
code
DC Link
23
Low voltage.
DC Link
28
High voltage
Check Flow Chart
Check the wire
connection.(U,V,W)
Is it normal ?
Yes
Is it normal ?
Yes
Is it normal ?
Yes
Check the input power
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Only for training and service purposes
Cause of error
• 1ph : DC link volt. is
140Vdc .
• 3ph : DC link volt. is
250Vdc .
• 1ph : DC link volt. is
140Vdc .
• 3ph : DC link volt. is
250Vdc .
❊ Check DC link voltage
❊ Check TRANS1
No
Correct
connection
No
Change
Compressor
❊ Dc link voltage table
No
Change
Compressor 1 Phase
3 Phase
- 70 -
Check point & Normal condition
• Check the power source.
• Check the components.
• Check the power source.
• Check the components.
CN_TRANS 1
Model
Type Non operating
AUUW126C PSC DC300V ¡¾ 10%
AUUW186C PSC DC300V ¡¾ 10%
AUUW246D PFC DC300V ¡¾ 10%
AUUW306D PFC DC300V ¡¾ 10%
AUUW366D PFC DC300V ¡¾ 10%
AUUW426D PFC DC300V ¡¾ 10%
AUUW486D PFC DC300V ¡¾ 10%
AUUW606D PFC DC300V ¡¾ 10%
AUUW368D PSC DC540V ¡¾ 10%
AUUW428D PFC DC540V ¡¾ 10%
AUUW488D PFC DC540V ¡¾ 10%
AUUW608D PFC DC540V ¡¾ 10%
V
DC Link Voltage
Operating
DC280V ¡¾ 10%
DC280V ¡¾ 10%
DC380V ¡¾ 10%
DC380V ¡¾ 10%
DC380V ¡¾ 10%
DC380V ¡¾ 10%
DC380V ¡¾ 10%
DC380V ¡¾ 10%
DC500V ¡¾ 10%
DC680V ¡¾ 10%
DC680V ¡¾ 10%
DC680V ¡¾ 10%
LGE Internal Use Only