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7-3 Failure diagnosis method of ice maker
Yes
Defect of power terminal
•Check DC power (5V,12V)
Defect of ice-making sensor
•Check resistance values of
both ends of ice-making sensor
(Pin for PCB CON2 1,2 PIN)
•Ice-making sensor-Defect
between (PiN NO # 4 of IC1)
boards
Defect of ice-making kit
Resistance values at both
ends of ice-removing motor
(# 7,8 pin of PCB CON2 7,8)
is 18°-22_ ?
• Drive circuit of ice-removing
motor (IC5 and auxiliary
circuit) is normal?
•HALL IC~Defect between
(PiN NO # 20 of IC1) boards
• Be sure ice-removing and
returning to the level when
pressing the TEST S/W
the level with the_
Normal I
Defect of ice-making KIT TESTS/W
•Both ends of TEST S/W
(# 3,6 pin of PCB CON2 3,6)
are at open status?
•TEST S/W ~ Defect between
boards (PIN NO #19 of IC1)
Defect of water supply
•Water supply valVe conduct
current?
•Water supply pump normally
operates?
• Water supply line is normally
connected?
Replacement of
MAIN PCB I
Replacementof I
ice-makingsensor
Replacementof
ice-makingkit
Replacementof
MAIN PCB
I
I
Replacement of Iice-making kit
Replacement of 1
water supply valve
- 20 -
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