LG MFL67229857, Owner'S Manual

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Three beeps will sound at 30 second intervals if either of the refrigerator
doors remain open or are not completely closed after 1 minute.
your service provider if the 3 warning beeps
The inbuilt diagnostic function automatically detects certain faults during the
refrigerators operation.
If a fault is detected during operation, the display cannot be changed by pressing any
button. The display will then show an Error indication and the refrigerator will
continue to operate at a predetermined setting. Should an error be displayed,
do not turn off the refrigerator as it will increase the time it takes for the
Seviceman to diagnose any possible fault.
doors.
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