LG GR-B197DVCA Service Manual page 84

2-7. Sound
Problems Causes
"Whizz" sound 1. Loud sound of compressor
operation.
2. Pipes resonat sound which is
connected to the compressor.
3. Fan operation sound in the freezer 3.1 Check fan insertion depth and
compartment.
4. Fan operation sound in the
compressor compartment.
Checks
1.1 Check the level of the
refrigerator.
1.2 Check the rubber seat
conditions (sagging and aging).
2.1 Check the level of pipes
connected to the compressor
and their interference.
2.2 Check rubber inserting
conditions in pipes.
2.3 Touch pipes with hands or screw 7) Leve a clearance between
-driver (check the change of
sound).
blade damage.
3.2 Check the interference with
structures.
3.3 Check fan motor.
3.4 Check fan motor rubber insertion
and aging conditions.
4.1 Same as fan confirmation in the
refrigerator.
4.2 Check drip tray leg insertion.
4.3 Check the screw fastening
conditions at condenser and
drip tray.
Measures
1) Maintain horizontal level.
2) Replace rubber and seat if they
are sagged and aged.
3) Insert rubber where hand contact
reduces noise in the pipe.
4) Avoid pipe interference.
5) Replace defective fan and fan
motor.
6) Adjust fan to be in the center of
bell mouth of the fan guide.
interfering parts and seal gaps in
the structures.
8) Reassemble the parts which make
sound.
9) Leave a clearance if evaporator
pipes and suction pipe touch
freezer shroud.
Remarks