Table of Contents
Advertisement
Display
Title
code
Over-current at the initial
operation of the compres-
29
sor / location sensing sig-
nal for compressor opera-
tion is not input
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.
Yes
Recheck power and
installation condition
Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Cause of error
• Compressor Locking
• Overload operation
(Outdoor fan constraint,
screened, blocked)
• Burned parts inside
PCB(IPM)
• Burned PCB phase current
sensing circuit parts
- 63 -
Part 5. Trouble Shooting
Check point & Normal condition
• Check compressor locking
• Compressor wire open/short
• Check compressor insulation damage
• Check outdoor fan constraint / screened / flow
structure
• Check if IMP burned (refer to CH21)
• Check on-PCB current sensing circuit parts
5V_GND
5V_GND
5V_GND
Comp_Current
LGE Internal Use Only
- Quick Links:
- Installation Functions
Hide quick links:
Advertisement
Chapters
Table of Contents
Troubleshooting
