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Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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Part 4 Trouble Shooting Guide
7.3.5 Error code 06
Discription DC Peak Error
• Supplied power is not normal
• Comp Connector (CN-U,V,W) is disconnected or connected to wrong position
• Compressor is damaged (coil short) ➔ replace compressor
• Too much Refrigerant
• Defect in outdoor PCB assembly ➔ replace PCB assembly
Supposed
Causes
Yes
No
Supplied voltage to
Outdoor PCB is about
AC 220/240V ?
Check power source
Is connector (CN-U,V,W)
connected to compressor and
inserted to PCB in right position?
Yes
No
Refrigerant pressure is within
limits?
Yes
No
Check CN-U,V,W connector
(U : RD, V : BL, W : YL)
* Check refrigerant pressure and
adjust.
Inverter components in outdoor
unit PCB assembly are working
properly ?
Is the compressor running ?
Yes
*Check resistance
No
No
Yes
It’s normal to protect the unit
Some overload makes this error
1
1
2
3
4
5
2
Between U-V, V-W, U-W port.
Short / Open circuit
(Comp..motor coil error)
normal:1~2Ω
Between U,V,W and Body
normal : over10MΩ
Short of SPM pins (GND-P,U,V,W pin)
Direction of D01Z~D03Z, C08Z, 10Z,
12Z,16Z
Assembling state of R01P~R21P&IC01P
Assembling state of screw between
INV-IC & Heat-sink
DC 15V output of Power module.
V
U
W
Ω
Be sure to disconnect the power cable plug
from the plug socket before disassembling the
equipment for a repair. Internal components
and circuit boards are at main potential when
the equipment is connected to the power
cables. This voltage is extremely dangerous
and may cause death or severe injury if come
in contact with it.
Be sure to turn off power switch before con-
nect or disconnect connector, or parts damage
may be occurred.
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