Problem

Possible Cause

 

Remedy

 

 

 

 

 

 

3. Ambient or condenser

3. Reduce temperature.

 

 

water temperature too

 

 

 

warm.

 

 

 

 

 

 

 

4. Refrigerant

4. Recharge.

 

 

overcharged.

 

 

 

 

 

 

 

5. Fan not operating.

5. See chart 1.[6]

 

 

(except water-cooled

 

 

 

model)

 

 

 

 

 

 

 

6. Refrigerant line or

6. Clean and replace drier.

 

 

components plugged.

 

 

 

 

 

 

 

7. Condenser water

7. Check and get

 

 

pressure too low or off.

recommended pressure.

 

 

(water-cooled model

 

 

 

only)

 

 

 

 

 

 

f) Transformer

1. Coil winding opened

1. Replace.

 

 

or shorted.

 

 

 

 

 

 

g)Wiring to Control Board

1. Loose connections or

1. Check for continuity and

 

 

open.

replace.

 

 

 

 

 

h)Thermistor

1. Leads shorted or

1. See "II.C.3. Controls and

 

 

opened and high

Adjustments, b) Harvest

 

 

temperature or harvest

Control."

 

 

backup timer safety

 

 

 

operates. (1 beep or 2

 

 

 

beep alarm)

 

 

 

 

 

 

i) Hot Gas Valve

1. Continues to open

1. Check for hot gas valve

 

 

in freeze cycle and

stuck open and replace.

 

 

freeze timer safety

 

 

 

operates. (3 beep

 

 

 

alarm)

 

 

 

 

 

 

j) Water Supply Line

1. Water supply off and

1. Check and get

 

 

water supply cycle

recommended pressure.

 

 

does not finish.

 

 

 

 

 

 

 

2. Condenser water

2. Check and get

 

 

pressure too low

recommended pressure.

 

 

or off and pressure

 

 

 

control opens and

 

 

 

closes frequently to

 

 

 

finally operate high

 

 

 

temperature safety.

 

 

 

(1 beep alarm)

 

 

 

 

 

 

k) Inlet Water Valve

1. Mesh filter or orifice

1. Clean.

 

 

gets clogged and

 

 

 

water supply cycle

 

 

 

does not finish.

 

 

 

 

 

 

 

2. Coil winding opened.

2. Replace.

 

 

 

 

 

 

3. Wiring to water valve.

3. Check for loose

 

 

 

connection or open, and

 

 

 

replace.

 

 

 

 

 

l) Control Board

1. Defective or in alarm.

1. See "II.C.4. Control Board

 

 

 

Check Procedure."

 

 

 

 

35

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Hoshizaki KM-501MAH, KM-501MRH, KM-501MWH service manual Problem Possible Cause Remedy
Page 34 Page 36

KM-501MAH, KM-501MWH, KM-501MRH specifications

The Hoshizaki KM-501MWH, KM-501MAH, and KM-501MRH are standout models in the commercial ice machine market, known for their robust performance and innovative technologies. These machines are specially designed to meet the diverse needs of restaurants, bars, and other food service establishments that require a reliable source of high-quality ice.

One of the defining features of the KM-501 series is their high production capacity. Each model can produce up to 500 pounds of ice per day, ensuring that even the busiest establishments can keep up with demand. The ice produced is crystal-clear, with a unique crescent shape that not only looks appealing but also melts slowly, making it ideal for drinks and food presentations.

The KM-501MWH model is equipped with advanced technology that ensures energy efficiency and reduced water usage. It features a powerful compressor and a highly efficient evaporator, which work together to minimize energy consumption while maximizing output. This makes it an environmentally friendly choice, reducing operational costs for businesses.

The KM-501MAH model stands out with its air-cooled condenser system, which allows for optimal performance without the need for extensive cooling water lines. This makes the installation process easier and reduces complexity, enabling businesses to set up their ice machine with minimal hassle. Furthermore, it features a self-cleaning mode that simplifies maintenance, contributing to consistent ice quality over time.

On the other hand, the KM-501MRH is designed for rugged environments. It is constructed with high-quality materials that enhance durability and longevity, making it suitable for outdoor applications or establishments located in warmer climates. The stainless-steel design not only contributes to the machine's robustness but also ensures easy cleaning and resistance to rust and corrosion.

Another key characteristic of the Hoshizaki KM-501 models is their user-friendly control panel. These machines come with intuitive controls that allow operators to easily adjust settings and monitor performance. This feature is particularly useful for staff in busy kitchens, enabling them to focus on service without constant checks on ice production.

Overall, the Hoshizaki KM-501MWH, KM-501MAH, and KM-501MRH offer excellent performance, energy efficiency, and user-friendliness. Their combination of innovative technologies, durable design, and high output capacity make them exceptional choices for any establishment in need of reliable ice production. Whether for a bustling restaurant or a bar serving up cocktails, these machines deliver ice that consistently meets high standards.
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