LG GC-B207GLQV Service Manual page 88

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TROUBLE DIAGNOSIS
Problems
Sounds of water flowing
"Click" sounds
Noise of ice maker operation
(applicable to model with ice maker).
- Noise produced by ice dropping
and hitting ice bank.
- Noise from motor sounds "Whizz".
Noise when supplying water.
Noise when supplying ice.
Checks and Measures
I Explain the flow of refrigerant.
• When the refrigerator stops, the water flowing sound happens.
This sound happens when the liquid or vapor refrigerant flows from the
evaporator to compressor.
I Explain the characteriistics of moving parts.
• This noise comes from the MICOM controller's switch on the top of the
refrigerator when it is turned on and off.
I Explain the procedure and principles of ice maker operation.
• Automatic ice maker repeats the cycle of water supplying ➝ icemaking ➝ ice
ejection. When water is supplied, the water supply valve in the machine room
makes sounds like "Whizz" and water flowing also makes sound. When water
freezes to ice, freezing sounds such as "click, click" are heard. When ice is
being ejected, sounds like "Whizz" produced by a motor to rotate an ice tray
and ice dropping and hitting ice bank sounds are also heard.
I Explain the principles of water supplied to dispenser.
• When the water supply button in the dispenser is pressed, the water supply
valve in the compressor compartment opens and let the water flow to the water
tank in the lower part of the refrigerator compartment. The water is dispensed
by this pressure. When this happens, motor sound and water flowing sound are
heard.
I Explain the principles of ice supply and procedure of crushed ice making in a
dispenser.
• When ice cube button is pressed, ice stored in the ice bank is moved by a Helix
Pusher and dispensed. If crushed ice button is pressed, the cube ice is
crushed. When this happens, ice crushing and hitting ice bank sounds are
heard.
- 88 -

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