Whirlpool 4322658A, Manual

Page: 25 / 48

5-1
DIAGNOSTICS & TROUBLESHOOTING
DIAGNOSTICS
Close the freezer
door for a minimum
of 1 minute.
Open the freezer
door.
Proceed to 2002
Design Optics
Mode on Page 5-4.
LED is flashing at 1 second
intervals indicating a 5 minute
“harvest” mode.
LED is flashing 2
pulses repeated.
Hold in the freezer
light switch.
Wait 5 minutes and
use 2002 Design Optics
Mode on Page 5-4.
Proceed to Original
Design Optics
Mode on Page 5-2.
Yes
Yes
No
No
OPTICS DIAGNOSTICS MODE
Diagnostics are used to determine whether the
optics circuits are operating properly. If the
optics circuits are malfunctioning, the ice maker
will not operate.
The optics system consists of an emitter board
and a receiver board. The emitter board trans-
mits a beam of infrared light that is detected
by the receiver. If the beam of light is inter-
rupted, the ice maker will not operate.
The optics system can have one of two types
of optics board designs installed: the original
design, or the 2002 design.
Use the following flow chart to determine which
of the board designs are installed. Once this is
determined, you will be directed to perform the
appropriate optics diagnostics procedure.
FLOW CHART TO
DETERMINE OPTICS
BOARD DESIGN