28Consumer Support Troubleshooting Tips Operating Instructions Safety InstructionsInstallation InstructionsNormal operating sounds.Newer refrigerators sound different from older refrigerators.Modern refrigerators have more features and use newertechnology.HUMMM...WHOOSH... The new high efficiency compressor may run faster andlonger than your old refrigerator and you may hear ahigh-pitched hum or pulsating sound whileit is operating. Sometimes the refrigerator runs for an extended period,especially when the doors are opened frequently. This meansthat the Frost Guard ™ feature is working to prevent freezerburn and improve food preservation. You may hear a whooshing sound when the doors close. Thisis due to pressure equalizing within the refrigerator. You may hear the fans spinning at high speeds.This happens when the refrigerator is first plugged in,when the doors are opened frequently or whena large amount of food is added to the refrigerator orfreezer compartments. The fans are helping to maintainthe correct temperatures. If either door is open for over 3 minutes, you may hearthe fans come on in order to cool the light bulbs. The fans change speeds in order to provide optimalcooling and energy savings.CLICKS, POPS,CRACKS and CHIRPS You may hear cracking or popping sounds when therefrigerator is first plugged in. This happens as therefrigerator cools to the correct temperature. Electronic dampers click open and closed to provideoptimal cooling and energy savings. The compressor may cause a clicking or chirping soundwhen attempting to restart (this could takeup to 5 minutes). The electronic control board may cause a clicking soundwhen relays activate to control refrigerator components. Expansion and contraction of cooling coils during andafter defrost can cause a cracking or popping sound. On models with an icemaker, after an icemaking cycle,you may hear the ice cubes dropping intothe ice bucket.WATER SOUNDS The flow of refrigerant through the freezer cooling coilsmay make a gurgling noise like boiling water. Water dropping on the defrost heater can cause a sizzling,popping or buzzing sound during the defrost cycle. A water dripping noise may occur during the defrost cycleas ice melts from the evaporator and flows into the drainpan. Closing the door may cause a gurgling sound due topressure equalization.Do you hear what I hear? These sounds are normal.For additional information on normalicemaker and dispenser operating sounds,see the About the automatic icemakerand About the ice and water dispensersections.