2. EVAPORATOR IS FROZEN UP

PROBLEM

POSSIBLE CAUSE

 

REMEDY

[1] Freeze cycle

a) Float Switch

1.

Leads short-circuit or

1.

Check and replace.

time is too

 

 

 

defective switch.

 

 

 

long.

 

 

2.

Float does not move freely.

2.

Clean or replace.

 

b) Water Solenoid

1.

Diaphragm does not close.

1. Check for water leaks

 

Valve

 

 

 

with icemaker off.

 

c) Controller Board

1. Defective.

1.

See “II.2[e] CHECKING

 

 

 

 

 

 

CONTROLLER BOARD.”

[2] All ice formed

a) Evaporator

1.

Scaled up.

1.

Clean.

on Evaporator

 

 

 

 

 

 

 

b) Water Supply Line

1.

Water pressure too low.

1.

Check and get

does not fall

 

 

 

 

 

recommended pressure.

into bin in

c) Water Filter System

 

 

 

 

 

 

1. Dirty/Restricted.

1.

Replace filter.

harvest cycle.

d) Water Solenoid

1.

Dirty mesh filter or orifice.

1.

Clean.

 

Valve

 

 

 

 

 

 

e) Ambient and/or

1.

Too cool.

1. Increase temperature.

 

water temperature

 

 

 

 

 

 

f) Line Valve

1.

Continues to open in

1.

Check operation in

 

 

 

 

harvest cycle.

 

harvest cycle and replace.

 

g) Thermistor

1. Out of position or loose

1.

See “V. 11. REMOVAL

 

 

 

 

attachment.

 

AND REPLACEMENT OF

 

 

 

 

 

 

THERMISTOR.”

 

h) Controller Board

1.

Defrost Timer is set too

1.

Adjust longer, referring

 

 

 

 

short.

 

to “II. 2. [d] CONTROLS

 

 

 

 

 

 

AND ADJUSTMENT, 2)

 

 

 

 

 

 

Defrost Timer.”

 

 

 

2. Defective.

2.

See “II. 2.[e] CHECKING

 

 

 

 

 

 

CONTROLLER BOARD.”

[3] Others

a) Spray Tubes

1. Clogged.

1. Clean.

 

 

 

2.

Out of position.

2.

Place in position.

 

b) Water System

1.

Dirty.

1.

Clean.

 

c) Refrigerant

1. Undercharged.

1.

Check for leaks and

 

 

 

 

 

 

recharge.

 

d) Expansion Valve

1.

Bulb out of position or

1.

Place in position.

 

 

 

 

loose attachment.

 

 

 

 

 

 

2. Defective.

2.

Replace.

 

e) Hot Gas Solenoid

1. Coil winding opened.

1. Replace.

 

Valve

 

2.

Plunger does not move.

2. Replace.

 

 

 

3.

Wiring to Hot Gas Valve.

3.

Check for loose

 

 

 

 

 

 

connection or open, and

 

 

 

 

 

 

replace.

 

f) Water Supply Line

1.

Too small; requires 1/2" OD

1.

Increase water line size.

 

 

 

 

line dedicated per machine.

 

 

 

 

g) Water filter

1.

Flow rate too small.

1.

Replace with filter that

 

 

 

 

 

 

has larger flow rate.

 

 

 

 

 

 

 

 

34

Page 33 Page 35
Page 34
Image 34
Hoshizaki KM-2000SRF3, KM2000SWF3, KM-2000SRH3, KM-2000SWH3 service manual Evaporator is Frozen UP, Thermistor
Page 33 Page 35

KM-2000SWH3, KM-2000SRF3, KM-2000SRH3, KM2000SWF3 specifications

The Hoshizaki KM-2000SRH3 and KM-2000SWH3 are two of the latest innovations in the world of ice-making machines, designed for high-demand commercial settings where reliability and efficiency are key. Known for their durability and performance, these machines are ideal for restaurants, bars, hotels, and other businesses that require a steady supply of ice.

One of the standout features of the KM-2000 series is its production capability. Both models are designed to produce a staggering amount of ice—approximately 2,000 pounds per day. This high output ensures that establishments are never left wanting, meeting the needs of peak service hours without interruption.

Hoshizaki has integrated advanced technologies into these machines to enhance efficiency and reduce downtime. The KM-2000SRH3 and KM-2000SWH3 come equipped with a reliable, self-contained refrigerant system that operates efficiently even in warmer environments. This is particularly important for businesses located in hotter climates, as it ensures that ice production remains consistent throughout the year.

Another notable technology included in both models is the unique crescent-shaped ice that they produce. This type of ice is not only aesthetically pleasing but also offers several functional advantages. The crescent shape allows for excellent cooling properties, making it perfect for drinks, while its hardness and density facilitate longer melting times, ensuring that beverages stay chilled for longer periods.

Additionally, Hoshizaki has incorporated a cleaning and sanitizing system in the KM-2000 series, ensuring that the ice produced is safe and hygienic. This built-in feature is crucial for maintaining health and safety standards in food service operations, reducing the need for manual cleaning and increasing operational efficiency.

In terms of design, both the KM-2000SRH3 and KM-2000SWH3 boast a compact footprint, making them suitable for spaces where size is a constraint. Their stainless steel construction not only adds to their durability but also enhances their visual appeal, fitting seamlessly into any commercial kitchen or bar environment.

Overall, the Hoshizaki KM-2000SRH3 and KM-2000SWH3 ice machines represent a convergence of efficiency, technology, and user-friendly design, making them a top choice for businesses that rely heavily on ice as a part of their service offerings. With their high production capabilities, advanced features, and commitment to quality, these models deliver reliable performance that operators can depend on day in and day out.
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