LG ACHH Series Manual page 100

Error code check
EEV
Check start
When permitting power initially,
is there an initialization vibration?
Yes
When operating
normally, is there a temperature
difference of the front and the rear
of cooling EEV?
No
When operating
normally, is there a temperature
difference of the front and the rear of
heating EEV?
Yes
No problem on EEV
No
Is power normally supplied
Yes
Is a check valve normal?
No
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to outdoor EEV?
Yes
Yes
EEV replacement
No
PCB
replacement
No
Check valve
replacement