GE Profile 21 Owner's Manual And Installation page 30

Normal operating sounds.
_ hese sounds are normal and are due mostly
to highly efficient operation.
The new high eflficiencycompressor rims faster and will have a higher pitch hum
or pulsating sound while operating.
The fans circulating air inside the freezer and refrigerator compartments which
keep the temperatures uniform throughout.
The fans operating at a high speed. 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 comparUnents.
on the defrost heater causing a sizzling, hissing or popping
sound during the defrost cycle.
The flow of refrigerant through the freezer cooling coils sounds fike boiling
gurgling noise.
coils caused by expansion and contraction
defrost and refrigeration following defrost.
Water dripping as it melts from the evaporator and flows to the drain pan
during the defrost cycle.
Icemaker
The icemaker water valve will buzz when the icemaker fins with water. Ifthe power
switch is in the ! (on)position it will buzz even flit has not yet been hooked up to
water. Keeping the power switch in the I (on)posidon before it is hooked up to
water can damage the icemaker. To prevent this, set the power switch to the
0 {off)position. This will stop the buzzing.
The sound of cubes dropping into the bin and water running in pipes as
icemaker refills.
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