[A] Control Board Layout - Hoshizaki KM-40B Service Manual

[a] CONTROL BOARD LAYOUT

Connector K3
Magnetic Contactor
Connector K4
Open
POWER OK LED
(Lights when power is
supplied to the board.
Flashes when bin control
is activated.)
Connector K5
Pins
#1 Fan Motor
#2 Hot Gas Valve
#3 Pump Motor
#4 Water Valve
#5 Open
#6 Drain Valve
Connector K6
Open
Connector K1
Pins
#1, 3 Float Switch
#2 Open
#4, 5 Bin Control
#6, 7 Thermistor
#8, 9 Open
Connector K2
Open
Alarm Buzzer
Part Number
Type
"H" Control Board
Connector K7
Transformer
Dip Switch
Control Board
P01771-02
HKM2006V003
20
Relay LEDs (5)
(indicate which relays
are energized as
listed below)
LED 5 (X1 Relay)
Compressor
LED 6 (X2 Relay)
Hot Gas Valve
Fan Motor (Fan Motor
off when LED on)
LED 8 (X4 Relay)
Water Valve
LED 4 (X6 Relay)
Drain Valve
LED 7 (X3 Relay)
Pump Motor
Connector K8
Open
Output Test Button
(used to test relays on
board)
Alarm Reset Button