29
• "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
(open on units with
thermostatic bin control)
• Label
(control board revision
level indicated on label
on side of relay)
• BLACK K5 Connector
Float Switch
• Part Number
• K1 Ten-Pin Connector
Pins #1 through #10
#1, 9-LED 1 on:
Compressor Relay/
Magnetic Contactor and
Fan Motor-Remote (FMR)
#2-LED 2 on: Hot Gas
Valve (HGV)
#3-LED 2 off: Liquid Line
Valve (LLV)
#4-LED 3 off: Pump Motor
(PM) in Freeze
#5-LED 3 on: Pump Motor
(PM) in Pump-Out
#6-LED 4: Inlet Water Valve
(WV)
#7, 10 Supply Voltage
#8 Open
• Freeze Timer LED
(yellow)
• S4 Dip Switch
• Harvest Timer LED
(orange)
• 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
(energized during
harvest pump timer)
LED 3 off:
K1 Connector Pin #4
(energized in freeze)
• LED 4 (X4 Relay)
K1 Connector Pin #6
• LED 1 (X1 Relay)
K1 Connector Pin #1, #9
• K2 Connector
Control Transformer (10.5VAC)
• Relay LEDs (green)
(indicate which
relays and K1
connector pins are
energized)
b) KM-1601SWH/3 and KM-1601SRH/3 "E" Control Board
"E" Control Board
Part Number 2A1410-01 (factory); 2A1410-02 (service)
"E" Control Board• "C" "ALP" Switch
Switch for "C" control board
and "ALPINE" control board
(service control board only)