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Part 5. Trouble Shooting
Display
Title
code
AC Input current is higher
22
than the limit.
WARNING
Before checking PCB or each outdoor electric parts, wait for 3 minutes after the power is off. When measuring at standby state
of power supply, after checking the measurement mode of the meter, be careful of the short-circuits with other parts.
Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Cause of error
• Input voltage error(low
voltage)
• Over load operation
(Outdoor fan constraint,
screened, blocked)
• Burned parts inside PCB
- 58 -
Check point & Normal condition
• Check input voltage
• Check outdoor fan canstraint / screened / flow
structure
• Check PCB current sensor parts
5V_GND
5V_GND
5V_GND
DC_LINK
LGE Internal Use Only
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