Working Principles - LG GR-B197WVS Service Manual

ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR

1. Working Principles

1-1. Ice Maker Working Principles
Power Input
Initial Control
Ice Making Control
Ice Ejection Control
Water Supply Control
Test Control
1-2. Dispenser Working Principles
1. This function is available in Model GR-P247, GR-P207 and GR-L247, GR-L207, GR-L197 where water and ice are
available without opening freezer compartment door.
2. "Crushed Ice" is automatically selected when power is initially applied or reapplied after power cut.
3. When dispenser selection switch is continuously pressed, light is on in the following sequence:
"Water" "Cube Ice" "Crushed Ice".
4. Lamp is on when dispenser rubber button is pressed and vice versa.
5. When dispenser crushed ice rubber button is pressed, dispenser solenoid and geared motor work so that crushed ice can
be dispensed if there is ice in the ice bank.
6. When dispenser cube ice rubber button is pressed, dispenser solenoid, cube ice solenoid and geared motor work so that
cube ice can be dispensed if there is ice in the ice bank.
7. When dispenser water rubber button is pressed, water valve opens and water is supplied if water valve is normally
installed on the right side of the machine room.
8. Ice and water are not available when freezer door is open.
• Level Ice Maker Cube Mould for "Initial Control"
after power is input.
• Wait until the water in the cube mould is frozen
after ice maker starts operation.
• Check ice bank is full of ice by rotating ice ejection
motor in normal and reverse direction and eject ice into
the ice bank if ice bank is not full.
• Conduct "Ice Making Control" after supplying water into the ice maker
cube mould by operating water valve.
• This is for refrigerator assembly line and service. When "ice making test switch" is pressed,
it operates in the following steps: initial
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ice ejection water supply control steps.