Control Board Layout - Hoshizaki KM-1301SAH/3 Service Manual

1. Control Board Layout

Bin Control Switch
Closed LED (green)
(on continuously
in thermostatic bin
control application)
Bin Control Switch
Open LED (yellow)
(mechanical bin control
application only)
Part Number
Alarm Buzzer
Power LED (red)
(lights when
power is supplied to
the control board)
Relay LEDs (4)
(indicate which
relays are energized
as listed below)
LED 2 (X2 Relay)
Hot Gas Valve (HGV)
Fan Motor (FM)
(FM off when LED on)
LED 3 (X3 Relay)
Pump Motor (PM)
(on at pump-out,
harvest (if applicable))
LED 4 (X4 Relay)
Inlet Water Valve (WV)
LED 1 (X1 Relay)
Compressor (Comp),
Fan Motor-Remote
(FMR)
"G" Control Board
"ALARM RESET" Button
K2 Connector
Transformer
Part Number 2A3792-01
S4 Dip
Switch
Control Board
22
"OUTPUT TEST" Button
(used to test relays on control board)
WHITE K3 Connector
Harvest Control
(thermistor)
RED K4 Connector
K4 Jumper (4A4883G01
thermostatic bin control
application) or Mechanical
Bin Control
S5 Dip Switch
BLACK K5 Connector
Float Switch
Label
(control board revision
level indicated on label
on side of relay)
K1 Ten-Pin Connector
Pins #1 through #10
#1, 9 Magnetic Contactor
#2 Hot Gas Valve (HGV)
#3 Liquid Line Valve (LLV),
Fan Motor (FM)
#4 Pump Motor (icemaking)
#5 Pump Motor (pump-out,
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)