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ICE MAKER AND DISPENSER
OPERATION
PRINCIPLE
AND REPAIR
METHOD
3. Ice Maker 1¥oubleshooting
* Troubleshooting: ff is possibleto confirm by pressingfreezer and refrigeratortemperature controlbuttons for more
than 1 second,(ice maker is normalif all leds are on): referto trouble diagnposis funcUon in MICOM
function 2-8 (page 18)
Failed DC Power
• Check DC power (5V, 12V).
es
--
_l__kg
_
Failed ice making sensor
_
• Check the resistance of
both ends (1,2) of ice making
I NO
. D_e_eSc°trs°bf
etCwOeNe_
ice making
sensor and board
<
Is Crus_.d
I
iLnED_ dku:_
Failed Ice Maker Unit
_
9,10 of ice ejection motor of
f
• CON9 between 18 and 22.Q?
No
is ice ejection motor drive circuit
/
ejectionand level return
normalwhen test switchis
"_
No
pressed for more than 0_5second?
"_.
Does the bell
./"
Normal
I
(IC11 and peripheral circuits)
normal?
• Defects between Hall IC and
Board (Pin No. 42 of ICl).
• Confirm ice ejection and level
return when pressing
test switch.
Failed ice maker unit test switch
• Are both ends 5,6 of CON9
test switch open?
• Defects between test switch
and board (Pin No. 43 of IC1).
• Are both ends (3,4) of CON9
ice maker stop switch short?
Poor water supply
• Is power applied to water
supply valve?
• Does the water supply
valve work nerma[ly?
• is the water suppiy line
normally connected?
_
Change main PWB I
Replace ice making
I
Sensor
Replace Ice Maker Unit I
Replace Main PWB
I
_'_
Replace Ice maker Unit I
Replace water
supply valve
I
- 61 -
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