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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Hoshizaki MWH KM-515MAH, MRH/3, MRH KM-901MAH, MWH(-M), MRH KM-600MAH KM-650MAH, KM-320MAH Control Board Layout

KM-320MAH, MRH KM-600MAH KM-650MAH, MWH(-M), MRH KM-901MAH, MRH/3 specifications

Hoshizaki, a leading manufacturer in the food service equipment sector, offers a diverse range of ice-making machines that excel in efficiency, durability, and innovative technology. Among the notable models are the Hoshizaki MWH KM-515MAH, MWH(-M), MRH KM-901MAH, MRH KM-600MAH, KM-650MAH, and KM-320MAH. Each model brings unique features designed to meet varying commercial ice production needs.

The Hoshizaki MWH KM-515MAH is particularly recognized for its high ice production capacity, generating up to 515 pounds of ice per day. This model incorporates advanced technology that ensures consistent ice quality and purity. The MWH(-M) variant often includes modifications to suit specific operational environments, ensuring reliability in diverse settings.

Similarly, the MRH KM-901MAH stands out with its ability to produce a staggering 901 pounds of ice per day, making it ideal for high-volume establishments. This model is equipped with Hoshizaki's unique "cubelet" technology, producing a soft, chewable ice perfect for beverages. It also features a robust stainless steel construction, enhancing its durability and resistance to corrosion.

The MRH KM-600MAH offers 600 pounds of daily ice output, while the KM-650MAH enhances that capacity to 650 pounds. Both machines prioritize energy efficiency and come with built-in energy-saving modes. These models feature advanced ice sensing technology that monitors production levels to optimize energy consumption and reduce waste.

On the other hand, the KM-320MAH is designed for smaller establishments, with a daily ice production rate of 320 pounds. Despite its smaller footprint, it maintains high production efficiency and is equipped with features like a built-in storage bin, saving space while ensuring a reliable ice supply.

Across these models, Hoshizaki employs various technologies, including air-cooled and water-cooled systems, offering flexibility depending on installation requirements. The ice machines are designed with user-friendly controls and features like self-cleaning capabilities, making maintenance straightforward and less time-consuming.

In summary, Hoshizaki's ice machines, including the MWH KM-515MAH, MRH KM-901MAH, and others, deliver exceptional ice production, durability, and efficiency tailored to meet the demands of any commercial kitchen or service establishment. With a commitment to quality, Hoshizaki continues to be a trusted choice for businesses needing reliable ice-making solutions.