Service Manual

17
1. Control Board Layout
"G" Control Board
Part Number 2A3792-01
"G" Control Board
• "ALARM RESET" Button
• "OUTPUT TEST" Button
(used to test relays on control board)
• K3 Connector (white)
Harvest Control
(thermistor)
• K4 Connector (red)
Bin Control
• K5 Connector (black)
Float Switch
• Part Number
• K1 Ten-Pin Connector
Pins #1 through #10
#1, 9-LED 1:
Compressor Relay (1 phase),
Magnetic Contactor (3 phase),
and Remote Fan Motor
#2-LED 2 on: Hot Gas Valves
(KMS and SRK) and X10 Relay in
Fill and Harvest
#3-LED 2 off: Liquid Line Valves
(KMS and SRK)
#4-LED 3 off: Pump Motor in
Freeze
#5-LED 3 on: Pump Motor
in Harvest Pump Timer and
Pump-Out
#6-LED 4: Inlet Water Valve and
X11 Relay
# 7, 1 0 115VAC Power Supply
#8 Open
• Bin Control Switch
Open LED (yellow)
• S4 Dip Switch
• Bin Control Switch
Closed LED (green)
• Alarm Buzzer
• Power LED (red)
(lights when
10.5VAC is supplied
to K2 connector)
• LED 2 (X2 Relay)
LED 2 on:
K1 Connector Pin #2
LED 2 off:
K1 Connector Pin #3
• LED 3 (X3 Relay)
LED 3 on:
K1 Connector Pin #5
LED 3 off:
K1 Connector Pin #4
• LED 4 (X4 Relay)
K1 Connector Pin #6
• LED 1 (X1 Relay)
K1 Connector Pin #1, #9
• K2 Connector
Control Transformer (10.5VAC)
• S5 Dip Switch
• Relay LEDs (green)
(indicate which relays
and K1 connector pins
are energized)