LG Gr P227 Ytqa Service Manual

EXPLATION FOR MICOM CIRCUIT 
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EXPLATION FOR MICOM CIRCUIT 
- 62 -

 

EXPLATION FOR MICOM CIRCUIT 
- 63 -

 

EXPLATION FOR MICOM CIRCUIT 
- 64 -

 

EXPLATION FOR MICOM CIRCUIT 
- 65 -

 

EXPLATION FOR MICOM CIRCUIT 
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1. Working Principles
1-1. Ice Maker Working Principles
1-2. Dispenser Working Principles
1. This function is available in Model GW-P227, GW-L227 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 button is...

2. Function of Ice Maker
2-1. Initial Control Function
1. When power is initially applied or reapplied after power cut, it detects level of ice maker cube mould after completion of
MICOM initialization. The detecting lever moves up and down.
2. The level of ice maker cube mould is judged by output signal, high and low signal, of Hall IC. Make the cube mould to be
horizontal by rotating ice ejection motor in normal or reverse direction so that High/Low signal can be applied to MICOM
Pin No. 42.(bar LED:...

2-4. Ice Ejection Control Function
1. This is to eject ice from ice maker cube mould after ice making is completed.
2. If Hall IC signal is on within 3.6 seconds after ice ejection motor rotates in normal direction, it does not proceed ice
ejection but waits. If the ice bucket is full, ice ejection motor rotates in normal direction in every hour to check the
condition of ice bucket. If the ice bucket is not full, the water supply control starts after completion of ice ejection control. If
the ice bucket...

2-5 Test Function
1. It is to force the operation during operation test, service, and cleaning. The test  switch is  mounted under  the  automatic
ice  maker. The  test function starts when the test switch is pressed for more than 0.5 second.
2. Test button does not work during ice ejection and water supply. It works when it is in the horizontal conditions. If mould is
full of ice during test function operation, ice ejection control and water supply control do not work.
3. When test switch is pressed for...