LG Electronics GR-P227/L227, GR-P257/L257 service manual Click Contraction of evaporator Sources

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Problems	Causes			Checks		Measures	Remarks
Vibration sound. 1.	Vibration of shelves and foods in	1-1.		Remove and replace the	1)	Reassemble the vibrating parts
("Cluck")	the refrigerator.			shelves in the refrigerator		and insert foam or cushion where
2.	Pipes interference and capillary	1-2.		Check light food and container		vibration is severe.
	tube touching in the compressor.			on the shelves.	2)	Leave a clearance where parts
	compartment.	2-1.		Touch pipes in the compressore		interfere with each other.
3.	Compressor stopper vibration.			compartment with hands.	3)	Reduce vibration with rubber
4.	Moving wheel vibration.	2-2		Check capillary tube touches		and restrainer if it is severe.
5.	Other structure and parts			cover back.		(especially, compressor and pipe).
	vibration.	3-1		Check compressor stopper	4)	Replace compressor stopper if it
		vibration.				vibtates severely.
		4-1		Check vibration of front and rear
			moving wheels.
		5-1		Touch other structures and parts.

Irregular sound.	1. It is caused by heat expansion	1-1 Check time and place of sound	1) Explain the principles of refrigeration
("Click").	and contraction of evaporator,	sources.	and that the temperature difference
	shelves, and pipes in the		between operation and defrosting
	refrigerator.		can make sounds.
			2) If evaporator pipe contacts with other
			structures, leave a clearance between
			them (freezer shroud or inner case).

TROUBLE DIAGNOSIS