3. Icemaker Troubleshooting
* Troubleshooting: it is possible to confirm by pressing freezer and refrigerator temperature control buttons for more than 1
second. (icemaker is normal if all LEDs are on): refer to trouble diagnosis function in MICOM function 2-
8 (page 21)
ICEMAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR
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No
Yes
Yes
Yes
No
No
No
No
Yes
Yes
Is DC Power (5V and 12V)
output normal?
Failed DC Power
• Check DC power (5V, 12V).
Change main PWB
Is cube ice LCD off during
troubleshooting check?
Failed icemaking sensor
• Check the resistance of
both ends (1,2) of icemaking
sensor of CON9.
• Defects between icemaking
sensor and board
(Pin No. 60 of IC1)
Replace Icemaking
Sensor
Is Crushed Ice LCD off during
troubleshooting check?
Failed Icemaker Unit
• Is the resistance of both ends
(9,10) of ice ejection motor of
CON9 between 18 and 22Ω?
• Is ice ejection motor drive circuit
(IC11 and peripheral circuits)
normal?
• Defects between Hall IC and
Board (Pin No. 42 of IC1).
• Confirm ice ejection and level
return when pressing
test switch.
Replace Icemaker Unit
Replace Main PWB
Are ice
ejection and level return
normal when test switch is
pressed for more than 1/2 second?
Does the bell
sound once?
Failed icemaker unit test switch
• Are both ends (5,6) of CON9
test switch open?
• Defects between test switch
and board (Pin No. 38 of IC1).
• Are both ends (3,4) of CON9
icemaker stop switch short?
Replace Icemaker Unit
Replace water
supply valve
• Is power applied to water
supply valve?
• Does the water supply
valve work normally?
• Is the water supply line
normally connected?
Poor water supply
Is water suppy normal
after Ice ejection and level return
by ice ejection motor?
Normal
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