LG GR-L208NN, Service Manual

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