Whirlpool 4322658A, Manual

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5-9
TROUBLESHOOTING CHART B
2002 Optics Design
TEST
RESULT
POSSIBLE CAUSE
CORRECTIVE ACTION
2 LED pulses, repeated.
Ice maker slide control turned OFF (closed).
Move ice maker slide control to ON (open).
Dirt
on
optics.
Clean dirt from optics.
Frost on optics lenses.
Clean frost from lenses.
Flapper door is open and is blocking the emitter beam.
Hold the emitter door closed, and the status LED should be on steady.
Failed
optics.
Replace emitter and receiver boards and retest.
No LED pulses.
Ice maker is in 5 minute
“harvest
” cycle.
To verify, press in on door switch. Status LED should flash at 1 second intervals.
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.
Flapper door is held closed.
Normal with flapper door closed.
Optics Diagnostic Mode (optics test only)