Hoshizaki SWH/3, SRH/3 A. Control Board Layout, E Control Board, Part Number 2A1410-02

A. Control Board Layout

1. "E" Control Board

"E" Control Board

• "ALARM RESET" Button		• "OUTPUT TEST" Button
	• S4 Dip Switch	(used to test relays on control board)

• Freeze Timer

LED (yellow)

• Harvest Backup

Timer LED (orange)

• Alarm Buzzer

• POWER OK LED (red) (lights when 10.5VAC is supplied to K2 connector)

• Relay LEDs

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

• 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 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)

•K3 (white) Connector

Thermistor (harvest control and high temperature safety)

•K4 (red) Connector

Open

•Part Number

•K5 (black) Connector

Float Switch (water level)

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

• 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.

"E" Control Board

Part Number 2A1410-02

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