17
1. Control Board Layout
Control Board
Part Number 2A3792-01 (factory);
2A3792-02 (service)
Control Products "G" Control Board
"ALARM RESET" Button
"OUTPUT TEST" Button
(used to test relays on board)
Connector K3
Harvest Control
(thermistor)
Connector K4
Mechanical Bin
Control
Label
(board revision level
indicated on label
on side of relay)
Connector K5
Float Switch
Part Number
Connector K1
Pins #1 through #10
#1, 9 Magnetic Contactor
#2 Hot Gas Valve (HGV)
#3 Liquid Line Valve (LLV)
#4 Pump Motor (icemaking)
#5 Pump Motor (harvest,
pump out)
#6 Inlet Water Valve (WV)
#7, 10 Supply Voltage
#8 Open
Switch for "C" board
and "ALPINE" board
(service boards only)
Bin Control Switch
Open LED (yellow)
S4 Dip
Switch
Bin Control Switch
Closed LED (green)
Alarm Buzzer
Power LED (red)
(lights when power
is supplied to the
board)
LED 2 (green)
Hot Gas Valve (HGV)
Self-Contained Fan
Motor (FMS) (FMS off
when LED on)
LED 3 (green)
Pump Motor (PM)
(PM on, but LED off,
at freeze cycle)
LED 4 (green)
Inlet Water Valve
(WV)
LED 1 (green)
Compressor (Comp)
Connector K2
Transformer
S5 Dip Switch
(factory set -
do not adjust)
