LG ARTCOOL Series Service Manual page 37

Part 4 Trouble Shooting Guide
6.3 The Diagnosis Procedure
START
Check the supplied voltage
to product (AC220V/230V ±30V)
Yes
Check the connecting cable
between Indoor and outdoor units.
Yes
Check the number of blinks on the
operation indicator or error code
on the display
(refer to the self-diagnosis
function).
Check the self-diagnosis table
Unit
• Check the condition of connectors
Indoor
• The condition of P.C.B pattern.
• Check the condition of connectors.
Outdoor
• The condition of P.C.B pattern.
• The electronic components.
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 connect or disconnect connector, or parts damage may
be occurred.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
No
Check the main power
No
Connect the cable Properly.
Check Point
- 36 -
LGE Internal Use Only