2. Features
The control board provides the following safeguards:
• Provides component protection during low water supply.
• Purges remaining ice in the evaporator at startup and shutdown.
• Provides short cycle protection for the compressor.
a) LED Lights
The "POWER" LED indicates control voltage and will remain on unless a control
voltage problem occurs. An LED illuminates for each relay as it is energized. For more
information, see "II.C. Sequence of Operation."
Cycle (Relay)
Fill
Ice Purge (X)
Freeze (X, X)
Drain Valve (X6)
Relay
Ice Dispense (X4)
Agitating Motors (X3) AM
Water Dispense (X5)
(Opti Serv Only)
Legend: AM–agitating motors, Comp–compressor; DV–drain valve; FMS–self-contained
fan motor; GM–gear motor; HTR–extruding head heater; IDM–ice dispensing
motor, shutter solenoid; WTR–dispensing water valve; WV–inlet water valve
Icemaking
Energized
LED
Components
POWER only
WV
GM
GM, HTR
GM, HTR,
GM, COMP
Comp, FMS
FLUSH
DV
Dispensing
Energized
LED
Component
Push Button
DM
IDM
Opti Serv
ICE
AM
WTR
WTR
Time LEDs are
On
N/A
60 seconds
N/A
0 Minutes
Time LEDs are
On
60 seconds
maximum
.6 seconds
N/A
7
Frequency LEDs are
On
As Needed
N/A
N/A
Every Hours
Frequency LEDs are
On
N/A
Every seconds of
accumulative dispense
time
N/A