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Control Board
Part Number 2A2649-01
b) DCM-300BAH-OS
• K5 Connector
#1, 2, 3 Ice Dispense
Mode Switch, Portion
Operation (5VDC)
#4, 5, 6 Ice Dispense
Mode Switch, Continuous
Operation (5VDC)
#7, 8, 9 Water Dispense
Sensor (5VDC)
• "FLUSH" (drain) LED
(X6 Relay)
K2 Connector Pin #10
12-hr. Drain Timer
K3 Connector Pin #3
Control Switch
"DRAIN" Position
• "COMP" LED (X2 Relay)
X2 Relay Terminals (115VAC)
• "GM" LED (X1 Relay)
K1 Connector Pin "NO"
• "WTR" LED (X5 Relay)
K2 Connector Pin #8
•K3 Connector
#3 24VAC Output to
Control Switch,
Inlet Water Valve,
Water Control Relay,
and Drain Valve
• Ice Dispense Time Control
• "AM" LED (X3 Relay)
K2 Connector Pin #4
• "COUNTER RESET" Button
(not used in this application)
• "FLUSH" (drain) Switch
(Do not adjust)
• K2 Connector
#1, 2 Gear Motor
Protect Relay Circuit
(5VDC)
#3 Power Supply Input
(115VAC)
#4 "AM" LED: Agitating Motor
(115VAC)
#5 Power Supply Input
(115VAC)
#6 "ICE" LED: Ice Dispense
Solenoid and Motor
(115VAC)
#7, 9 Control Transformer
(24VAC)
#8 "WTR" LED:
Water Dispense Valve
(24VAC)
#10 "FLUSH" (drain) LED:
Drain Valve (After 12-hr.
timer terminates) (24VAC)
•K1 Connector
"COM" Power Supply Input
(115VAC)
"NO" "GM" LED: Gear Motor
and Gear Motor
Protect Relay
• K4 Connector
#1, 2 Control Transformer
(10.5VAC)
#3, 4 Bin Control,
Control Switch "ICE",
and Water Control
Relay Circuit (5VDC)
#5, 6 High-Pressure Switch
(5VDC)
• "ICE" LED (X4 Relay)
K2 Connector Pin #6
• "POWER" LED (green)
(lights when 10.5VAC is
supplied to K4 connector
pins #1 & #2)
"DCM-OS" Opti-Serve Model Control Board
• Relay LEDs (red)
(indicate which relays
and connector pins are
energized)