Hoshizaki MWH(-M) Benutzerhandbuch

A. Control Board Layout

1. "E" Control Board

"E" Control Board

Part Number 2A1410-02

"E" Control Board

Microprocessor
(control board revision
level indicated on label
on side of relay)

• Part Number

• K1 Connector
Pins #1 through #10
#1, 9 Magnetic Contactor or
Compressor Relay
#2 Hot Gas Valve
#3 Fan Motor
Liquid Line Valve
#4 Pump Motor (icemaking)
#5 Pump Motor (pump-out)
#6 Inlet Water Valve
#7, 10 Component Power
Supply
#8 Open

Switch for "C" control board
and "ALPINE" control board
(service control board only)
Set to "ALP" for appliances
covered in this manual.

• Freeze Timer
LED (yellow)

• Harvest Backup
Timer LED (orange)

• K2 Connector
Control Transformer
(10.5VAC)

• "ALARM RESET" Button

• S4 Dip Switch

• "OUTPUT TEST" Button

(used to test relays on control board)

• K3 (white) Connector

Thermistor
(harvest control and
high temperature safety)

• K4 (red) Connector
Open

• K5 (black) Connector

Float Switch
(water level)

• LED 1 (X1 Relay)

K1 Connector Pin #1, #9

• LED 4 (X4 Relay)

K1 Connector Pin #6

• LED 3 (X3 Relay)
LED 3 on:
K1 Connector Pin #5
LED 3 off:
K1 Connector Pin #4
(energized in freeze)

• LED 2 (X2 Relay)

LED 2 on:
K1 Connector Pin #2
LED 2 off:
K1 Connector Pin #3

• Relay LEDs

(4) (indicate which
relays are energized
and which K1
connector pins are
energized

• POWER OK LED

(red) (lights when
10.5VAC is supplied
to K2 connector)

• Alarm Buzzer