Product Operation; Fast Fill Dispenser System Overview - Whirlpool 8178501A Manual

FAST FILL DISPENSER SYSTEM OVERVIEW

FUNCTIONS AND FEATURES
The primary functions of the Fast Fill Dispenser
System are:
• Ice dispensing (cubed and crushed)
• Water dispensing (normal fill with feed-
back and measured fill)
• Water filter indicator
• Dispenser lighting (auto night light)
• Lockout
• Dispenser housing heater operation and
power for the ice door. Power (14 volts
DC) for a heated ice door is available
and may be used as a service fix.
• Monitoring water valve flowmeter to
measure water flow to ice maker and
dispenser
• Showroom floor mode
• Service Mode Diagnostics
Components
There are three control boards in the Fast Fill
Dispenser System. The user interface (touch-
pad), and the core control are located in the
dispenser area of the freezer door. The smart
valve control is part of the valve and is located
in the unit compartment.

PRODUCT OPERATION

Dispenser Area
The core control is attached to the dispenser
housing and controls the dispenser motor,
ice door motor, dispenser housing and ice
door heaters. The core control also monitors
the condition of the freezer door switch and
provides the 14 volt DC power supply for the
user interface and smart valve. Water and ice
can not be dispensed while the freezer door
is open.
The user interface provides customer input to
the system based on input from the keypad.
The user interface drives all the LED indicators
and the audio beeper. The user interface pow-
ers the white LED lighting and sets the proper
amount of lighting during the auto night mode
using the photo sensor on the user interface
keypad.
The ice and water pad switches are connected
electrically to the user interface.
Unit Compartment
The smart valve is mounted to the cabinet. In
addition to the dispenser and ice maker water
solenoids, it contains a small electronic board
and a water flow sensor. The smart valve is
used to measure the amount of water for the
dispenser and the ice maker.
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