GE Profile 42 Owner's Manual And Installation Instructions page 41

Normal operating sounds.
Newer refrigerators sound different from older refrigerators.
Modern refrigerators have more features and use newer
technology.
Do you hear what I hear? These sounds are normal.
HUMMM...
WHOOSH...
The new high efficiency compressor may run faster and
longer than your old refrigerator and you may hear a high-
pitched hum or pulsating sound while
it is operating.
This is due to pressure equalizing within
the refrigerator.
CLICKS, POPS,
CRACKS and CHIRPS
refrigerator is first plugged in. This happens as the
refrigerator cools to the correct temperature.
The compressor may cause a clicking or chirping sound
when attempting to restart (this could take
up to 5 minutes).
The electronic control board may cause a clicking sound
when relays activate to control refrigerator components.
Expansion and contraction of cooling coils during and
after defrost can cause a cracking or popping sound.
After an icemaking cycle, you may hear the ice cubes
dropping into the ice bucket.
fans spinning at high speeds.
This happens when the refrigerator is first plugged in,
when the doors are opened frequently or when a large
amount of food is added to the refrigerator or freezer
compartments. The fans are helping to maintain the
correct temperatures.
If either door is open for over 3 minutes, you may hear the
fans come on in order to cool the light bulbs.
The fans change speeds in order to provide optimal
cooling and energy savings.
WATER SOUNDS
The flow of refrigerant through the freezer cooling
coils may 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 cycle
as ice melts from the evaporator and flows
into the drain pan.
Closing the door may cause a gurgling sound due
to pressure equalization.
For additional information on normal
icemaker and dispenser operating sounds,
see the About the automatic icemaker
and About the ice and water dispenser
sections.
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