Service manual

5-8
TEST RESULT POSSIBLE CAUSE CORRECTIVE ACTION
Ice maker slide control turned OFF (closed). Move ice maker slide control to ON (open).
Dirt on optics. Clean dirt from optics.
Misaligned ice bin. Realign ice bin cutouts with optics path.
Ice in bin blocking optics path. Remove enough ice from bin to clear path.
Frost on optics lenses. Clean frost from lenses.
Ice bin not closing optics emitter
door properly.
Tape emitter door closed and retest. If optics tests
okay, the ice bin and/or its mounting are at fault.
Freezer door not completely closed during
Optics Test.
Close freezer door and retest.
Failed optics. Replace emitter and receiver boards and retest.
Ice maker is in “harvest” cycle.
Wait 5 minutes until
“harvest” cycle is complete and retest.
LED was not viewed within 2 seconds of
opening freezer door.
Retest and view LED within 2 seconds of opening freezer
door.
Freezer door was not closed for a minimum of
5 seconds before starting test.
Close freezer door, wait for at least 5 seconds, and retest.
Incorrect wiring at emitter or receiver board. Correct wiring and retest.
Optics performing self-tests (will not
perform diagnostic tests during this time).
Make sure ice maker is
“parked.” Unplug refrigerator for
5 seconds to reset optics control and retest.
LED is defective. Replace emitter and receiver boards and retest.
5 second LED on steady. Ice maker control circuit is functioning normally. None required.
No LED pulses.
2 LED pulses, repeated.
Optics Diagnostic Mode
(optics test only)
TROUBLESHOOTING CHART A
Original Optics Design