b) "G" Control Board: Auxiliary Code U-1 and Later
"G" Control Board
Bin Control Switch | "ALARM RESET" Button | S4 Dip |
Closed LED (green) | Switch | |
(on continuously |
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in thermostatic bin |
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control application) |
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Bin Control Switch |
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Open LED (yellow) |
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(mechanical bin control |
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application only) |
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Part Number |
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Alarm Buzzer |
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Power LED (red) |
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(lights when |
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power is supplied |
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to the control board) |
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Relay LEDs (4) |
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(indicate which |
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relays are energized |
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as listed below) |
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LED 2 (X2 Relay) |
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Hot Gas Valve (HGV) |
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Fan Motor (FM) |
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(FM off when LED on) |
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Liquid Line Valve (LLV) |
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LED 3 (X3 Relay) |
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Pump Motor (PM) |
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(on at |
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harvest (if applicable)) |
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LED 4 (X4 Relay) |
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Inlet Water Valve (WV) |
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LED 1 (X1 Relay) |
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Compressor (Comp), |
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Fan |
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(FMR) |
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K2 Connector
Transformer
"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)
S5 Dip Switch
BLACK K5 Connector 
Float Switch
Label
(control board revision level indicated on label on side of relay)
K1
Pins #1 through #10
#1, 9 Magnetic Contactor
#2 Hot Gas Valve (HGV)
#3 Fan Motor (FM),
Liquid Line Valve (LLV)
#4 Pump Motor (icemaking)
#5 Pump Motor
harvest (if applicable))
#6 Inlet Water Valve (WV)
#7, 10 Component Power
Supply
#8 Open
Switch for "C" control board and "ALPINE" control board (service control board only)
"G" Control Board
Part Number 2A3792-01
28
