Haier BD-478A service manual Why the freezer’s noise increases after using

At operation of compressor, it breathes in and exhausts out gas continuously. When liquid refrigerant flows through capillary, there will be gas jet and makes sound of gas flowing. This is normal sound and may be different for various freezers as compressors and evaporators used are different.

12.6.5Why there is sudden “cluck” sound or “pattering” sound from freezer?

Answer: This is the sound of expanding with heat and contracting with cold of condenser and evaporator, or the sound of ice at evaporator surface because of sudden heat or cold. This sound may occur at the following situations:

(1)Newly bought freezer, the internal stress of materials has not been eliminated. With time going on, the stress of materials will disappear and it is less possible to make this sound.

(2)Temperature in the freezer is not uniform just after frost melting.

(3)When open door and take out food, the evaporator feels hot suddenly.

(4)Temperature changes greatly of condenser and evaporator several minutes after starting or stopping of freezer.

Expand with heat and contract with cold is natural law, and this sound is normal.

MAINTENANCE SERVICE AND TROUBLE SHOOTING Maintenance Service and Trouble Shooting

12.6.6 Why the freezer’s noise increases after using

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