LG LRTNC0915 Series Owner's Manual page 27

Problem
Pulsating or high- Your refrigerator is designed to run more efficiently to keep your food items at the
pitched sound desired temperature. The high efficiency compressor may cause your new refrigerator
to run longer than your old one, but it is still more energy efficient than previous
models. While the refrigerator is running, it is normal to hear a pulsating or high-
pitched sound.
• Normal Operation
Possible Cause & Solution
TROUBLESHOOTING 27