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Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Self-diagnosis function
■ Please refer to trouble shooting guide in service manual for each error title
CAUTION
In case that the control box is opened and before checking electrical parts, it should be checked that
the LED 01Y turned off (wait 3 minutes after main power OFF), otherwise, it may cause electrical
shock.
Display Title Cause of Error
226
227
228
229
230
231
Inlet sensor of subcooler of HR unit 7 is open or short
Outlet sensor of subcooler of HR unit 7 is open or short
Failling to receive HR unit 7 signal at outdoor unit
Liquid pipe sensor of HR unit 8 is open or short
Inlet sensor of subcooler of HR unit 8 is open or short
Outlet sensor of subcooler of HR unit 8 is open or short
Inlet sensor of subcooler of HR unit 7
Outlet sensor of subcooler of HR unit 7
Transmission error: HR unit 7 → out-
door unit
Liquid pipe sensor of HR unit 8
Inlet sensor of subcooler of HR unit 8
Outlet sensor of subcooler of HR unit 8
HR unit related
error
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