IV. Service Diagnosis

A. No Ice Production

Problem

Possible Cause

 

Remedy

 

 

 

 

[1] The icemaker will not

a)Power Supply

1. OFF position.

1. Move to ON position.

start.

 

 

 

 

2. Loose connection.

2. Tighten.

 

 

 

 

 

 

 

 

3. Bad contacts.

3. Check for continuity and

 

 

 

replace.

 

 

 

 

 

 

4. Voltage too high.

4. Check and get

 

 

 

recommended voltage.

 

 

 

 

 

b)Fuse (Inside fused

1. Blown.

1. Check for short circuit and

 

disconnect, if any)

 

replace.

 

 

 

 

 

c) Control Switch

1. OFF position.

1. Move to ICE position.

 

 

 

 

 

 

2. Bad contacts.

2. Check for continuity and

 

 

 

replace.

 

 

 

 

 

d)Bin Control Thermostat

1. Tripped with bin filled

1. Remove ice.

 

 

with ice.

 

 

 

 

 

 

 

2. Ambient temperature

2. Increase ambient

 

 

too cool.

temperature.

 

 

 

 

 

 

3. Set too warm.

3. See "II.B.4. Controls

 

 

 

and Adjustments, f) Bin

 

 

 

Control."

 

 

 

 

 

 

4. Bulb out of position.

4. Place in position.

 

 

 

 

 

 

5. Bad contacts or leaks

5. Check for continuity and

 

 

in bulb.

replace.

 

 

 

 

 

e)High Pressure Control

1. Bad contacts.

1. Check for continuity and

 

 

 

replace.

 

 

 

 

 

f) Transformer

1. Thermal fuse blown or

1. Replace.

 

 

coil winding opened.

 

 

 

 

 

 

g)Wiring to Controller

1. Loose connections or

1. Check for continuity and

 

Board

open.

replace.

 

 

 

 

 

h)Thermistor

1. Leads short-circuit

1. See "II.B.4. Controls and

 

 

or open and high

Adjustments, a) Defrost

 

 

temperature safety

Control."

 

 

operates.

 

 

 

 

 

 

i) Hot Gas Solenoid Valve

1. Continues to open in

1. Check for power off in

 

 

freeze cycle and high

freeze cycle and replace.

 

 

temperature safety

 

 

 

operates.

 

 

 

 

 

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Hoshizaki KM-320MAH, KM-320MWH service manual IV. Service Diagnosis No Ice Production, Problem Possible Cause Remedy

KM-320MWH, KM-320MAH 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.