PROBLEM

POSSIBLE CAUSE

 

REMEDY

 

[4] Water

a) Water Solenoid

1.

Diaphragm does not close.

1.

Check for water leaks

 

continues to

Valve

 

 

 

 

 

with icemaker off.

 

be supplied in

b) Controller Board

1.

Defective.

1.

See “II.2.[e] CHECKING

 

freeze cycle.

 

 

 

 

 

 

CONTROLLER BOARD.”

 

 

 

 

 

 

 

 

 

 

 

[5] No water

a) Water Supply Line

1.

Water pressure too low and

1.

Check and get

 

comes from

 

 

 

 

water level in Water Tank

 

recommended pressure.

 

Spray Tubes.

 

 

 

 

too low.

 

 

 

Water Pump

b) Water Solenoid

1.

Dirty mesh filter or orifice

1.

Clean.

 

will not start, or

Valve

 

 

 

and water level in Water

 

 

 

freeze cycle

 

 

 

 

Tank too low.

 

 

 

time is too

c) Water System

1.

Water leaks.

1.

Check connections for

 

short.

 

 

 

 

 

 

water leaks, and replace.

 

 

 

 

 

 

2. Clogged.

2. Clean.

 

 

 

d) Pump Motor

 

 

1. Motor winding opened.

1. Replace.

 

 

 

 

2.

Bearing worn out.

2. Replace.

 

 

 

 

3.

Wiring to Pump Motor.

3.

Check for loose

 

 

 

 

 

 

 

 

 

connection or open, and

 

 

 

 

 

 

 

 

 

replace.

 

 

 

 

4.

Defective Capacitor.

4.

Replace.

 

 

 

 

5.

Defective or bound impeller.

5.

Replace and clean.

 

 

 

 

6.

Mechanical Seal worn out.

6.

Check and replace.

 

 

 

e) Controller Board

1.

Defective.

1.

See “II.2. [e] CHECKING

 

 

 

 

 

 

 

 

 

CONTROLLER BOARD.”

 

[6] Fan Motor will

a) Fan Motor

 

 

1. Motor winding opened.

1. Replace.

 

not start, or is

 

 

2.

Bearing worn out.

2.

Replace.

 

not operating.

 

 

3.

Wiring to Fan Motor.

3.

Check for loose

 

 

 

 

 

 

 

 

 

connection or open, and

 

 

 

 

 

 

 

 

 

replace.

 

 

 

 

 

4.

Defective Capacitor.

4.

Replace

 

 

 

 

 

 

5. Fan blade bound.

5.

Check and replace.

 

 

 

b) Controller Board

1.

Defective.

1.

See “II.2. [e] CHECKING

 

 

 

 

 

 

 

 

 

CONTROLLER BOARD.”

 

[7] All components

a) Refrigerant

 

 

1. Undercharged.

1.

Check for leaks and

 

run but no ice

 

 

 

 

 

 

recharge.

 

is produced.

 

2.

Air or moisture trapped.

2.

Replace Drier, and

 

 

 

 

 

 

 

 

 

recharge.

 

 

 

b) Compressor

1.

Defective valve.

1. Replace.

 

 

 

c) Hot Gas Solenoid

1.

Continues to open in freeze

1.

Check and replace.

 

 

 

Valve

 

 

 

cycle.

 

 

 

 

 

d) Line Valve

1.

Continues to close in

1.

Check and replace

 

 

 

 

 

 

 

freeze cycle.

 

 

 

 

 

e) Water Supply Line

 

 

1. Condenser water pressure

1.

Check and get

 

 

 

[Water-cooled model

 

 

 

too low or off and Pressure

 

recommended pressure.

 

 

 

only]

 

 

 

Control opens and closes

 

 

 

 

 

 

 

 

 

frequently.

 

 

42

Page 41 Page 43
Page 42
Image 42
Hoshizaki KM-900MRF3, KM-900MWF, KM-900MAF service manual Problem Possible Cause Remedy
Page 41 Page 43

KM-900MAF, KM-900MRF3, KM-900MWF, KM-900MRF specifications

The Hoshizaki KM-900MRF3, KM-900MRF, KM-900MAF, and KM-900MWF are high-performance ice machines renowned for their efficiency, durability, and advanced technology. These models are designed to meet the needs of various industries, including restaurants, bars, and hotels, where ice production is critical for ensuring customer satisfaction.

One of the standout features of the KM-900 series is its high ice production capacity. Each model can produce an impressive amount of ice per day, making it suitable for high-demand environments. The KM-900MRF3 and KM-900MRF models are particularly noted for their ability to create crescent ice, which is known for its density and slow melting properties, ideal for beverages. On the other hand, the KM-900MAF and KM-900MWF models are designed to produce flake ice, which is perfect for display purposes and for use in food processing.

The KM-900 series uses a patented ice-making system that maximizes efficiency while minimizing energy consumption. These machines are equipped with powerful compressors and evaporators, ensuring quick and reliable ice production. Hoshizaki's commitment to energy efficiency is reflected in the low energy consumption rates of these machines, which are designed to operate quietly and with minimal environmental impact.

Moreover, each model features a durable stainless steel exterior, making them resistant to corrosion and easy to clean. This durability ensures that the machines maintain their high performance over time, even in demanding environments. The user-friendly control panel allows for easy operation and monitoring, while the built-in diagnostics can alert users to any potential issues, ensuring quick maintenance and minimal downtime.

The KM-900 series also prioritizes hygiene with its easy-to-clean design, including removable components and smooth surfaces that prevent bacterial growth. This is crucial for establishments that need to comply with health and safety regulations.

In summary, the Hoshizaki KM-900MRF3, KM-900MRF, KM-900MAF, and KM-900MWF models set the standard for commercial ice production. With their robust features, energy-efficient technology, and commitment to hygiene, these machines are an excellent investment for any business requiring high volumes of reliable ice. Their advanced design ensures that businesses can operate smoothly while providing customers with quality service.
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