Service manual

5. Trouble Shooting
- 65 -
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
24
Press S/W Open
• Low / High press
S/W open.
• Check the connection CN_L/PRESS,H/PRESS
• Check the components.
Display
code
Title Cause of error Check point & Normal condition
Is high pressure switch
connector connected
to PCB?*
No
Connect securely
Is high pressure switch
connector short
during off time?**
Yes
No
Is this error appeared
again after reset?
Yes
No
Is SVC valve open?
Yes
Re-check momentary
problem or not
Open SVC valve
No
Yes
Replace high pressure switch
Is high pressure
more than 2500kPa
at manifold gauge?
No
Replace PCB
Yes
Is high pressure of
LGMV similar as
at manifold gauge?
No
Replace high pressure sensor
Yes
Check pipe is blocked or
not and take measure
■ Error diagnosis and countermeasure flow chart