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"G" Control Board
Part Number A379-0
"G" Control Board
"ALARM RESET" Button
"OUTPUT TEST" Button
(used to test relays on control board)
WHITE K3 Connector
Harvest Control
(thermistor)
RED K4 Connector
Mechanical Bin Control or
K4 Jumper (thermostatic
bin control application)
Label
(control board revision
level indicated on label
on side of relay)
BLACK K5 Connector
Float Switch
Part Number
K Ten-Pin Connector
Pins # through #0
#, 9 Magnetic Contactor
# Hot Gas Valve (HGV)
#3 Fan Motor (FM),
Liquid Line Valve (LLV)
#4 Pump Motor (icemaking)
#5 Pump Motor (pump-out,
harvest (if applicable))
#6 Inlet Water Valve (WV)
#7, 0 Component Power
Supply
#8 Open
Switch for "C" control board
and "ALPINE" control board
(service control board only)
Bin Control Switch
Open LED (yellow)
(mechanical bin control
application only)
S4 Dip
Switch
Bin Control Switch
Closed LED (green)
(on continuously
in thermostatic bin
control application)
Alarm Buzzer
Power LED (red)
(lights when
power is supplied
to the control board)
LED (X Relay)
Hot Gas Valve (HGV)
Fan Motor (FM)
(FM off when LED on)
Liquid Line Valve (LLV)
LED 3 (X3 Relay)
Pump Motor (PM)
(on at pump-out,
harvest (if applicable))
LED 4 (X4 Relay)
Inlet Water Valve (WV)
LED (X Relay)
Compressor (Comp),
Fan Motor-Remote
(FMR)
K Connector
Transformer
S5 Dip Switch
b) "G" Control Board: Auxiliary Code U-1 and Later
Relay LEDs (4)
(indicate which
relays are energized
as listed below)