G. Diagnostic Charts

Before consulting the diagnostic charts, check for correct installation, proper voltage per unit nameplate, and adequate water supply. Check the control board using the steps in "IV.B. Control Board Check." Check the dip switch settings to assure that S4 dip switch 3, 4, 7, 8, 9, 10 and S5 (KM‑1601SAH/3 "G" CB) dip switch 1 through 5 are in the factory default position. S4 dip switch 1, 2, 5, 6 are cleaning adjustments and the settings are flexible. For factory default settings, see "II.C.3.a) Default Dip Switch Settings."

1. No Ice Production

No Ice Production - Possible Cause

1. Power Supply

a) Off, blown fuse, or tripped breaker.

 

b) Not within specifications.

 

 

2. Main Transformer (230V/115V)

a) Coil winding open or shorted.

(3 Phase Only)

 

 

 

 

3. Water Supply

a) Water supply off or improper water pressure.

 

 

 

b) External water filters clogged.

4. Interlock Switch (Cleaning

a) Open position.

Valve)

 

 

b) Bad contacts.

 

 

 

5. Thermostatic Bin Control

a) Tripped with bin filled with ice.

See "IV.C. Bin Control Check."

 

 

b) Ambient temperature too cool.

 

 

c) Set too warm.

 

 

 

d) Bulb out of position.

 

 

 

e) Bad contacts.

 

 

6. Fuse (Control Box)

a) Blown.

7. Control Switch

a) Bad contacts.

 

 

8. High-Pressure Switch

a) Bad contacts.

 

 

 

b) Dirty air filter (air-cooled models).

 

 

 

c) Clogged condenser.

 

d) Ambient temperature too warm.

 

e) Refrigerant overcharged.

 

 

 

 

f)

Fan not operating (air-cooled and remote air-cooled models).

 

 

 

g) Refrigerant lines or components plugged.

 

 

 

h) Headmaster (C.P.R.) open (remote air-cooled models).

 

i)

Condenser water temperature too warm (water-cooled models).

 

 

 

 

j)

Insufficient water supply to condenser (water-cooled models).

 

 

 

k) Water regulating valve out of adjustment or defective (water-cooled

 

 

models).

 

 

 

 

l)

Condenser water temperature too warm.

9. Control Transformer

a) Coil winding open or shorted.

(115V/10.5V)

 

 

 

 

10. Control Board

a) In alarm.

See "IV.B. Control Board Check."

 

b) Defective.

 

 

11. Thermistor

a) Leads shorted or open.

See "IV.E. Thermistor Check."

 

 

12. Hot Gas Valve

a) Open in freeze cycle.

 

 

 

b) Closed in harvest cycle.

 

 

 

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Hoshizaki KM-1601SWH/3, KM-1601SAH/3, KM-1601SRH/3 service manual Diagnostic Charts, No Ice Production Possible Cause
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KM-1601SWH/3, KM-1601SRH/3, KM-1601SAH/3 specifications

Hoshizaki has long been a trusted name in the world of commercial refrigeration and ice-making equipment. Among its offerings, the KM-1601SAH/3, KM-1601SRH/3, and KM-1601SWH/3 models stand out for their innovative features and robust design. These machines are integral for businesses that require reliable and efficient ice production, such as restaurants, hotels, and convenience stores.

At the core of these models is Hoshizaki's renowned Crescent Cube Technology, which produces clear, crescent-shaped ice that is ideal for both beverage service and food presentation. The unique shape of the ice ensures reduced melting rates, helping to maintain beverage temperature for longer periods while minimizing dilution. Additionally, the crescent ice is less prone to clumping, making it easier to dispense and ideal for high-volume use.

One of the key features of the KM-1601 series is its exceptional ice production capacity. Each model can produce up to 1,600 pounds of ice in a 24-hour cycle, making them suitable for heavy-demand environments. The machines are constructed with a durable stainless steel exterior, providing not only a sleek look but also enhanced resistance to corrosion and easy maintenance.

The KM-1601SAH/3 is designed with a built-in ice storage bin, allowing for seamless integration into various setups. Its state-of-the-art refrigeration system ensures optimal energy efficiency, which is crucial for businesses looking to manage operational costs. The KM-1601SRH/3 includes a self-contained design, simplifying installation and reducing the need for external ice storage solutions.

For users concerned with hygiene, these models boast advanced sanitation features. Hoshizaki's Antimicrobial Agent is incorporated into key components to inhibit the growth of bacteria and slime, ensuring cleaner ice production. The machines also feature easy-to-access panels for quick cleaning and maintenance, reducing downtime.

Another significant characteristic is their user-friendly controls, which simplify operation and monitoring of ice production. The built-in monitoring system alerts users to any potential issues, allowing for proactive maintenance and minimal disruption to service.

The KM-1601SWH/3 model further enhances the lineup with its energy-efficient design, lightweight construction, and compact footprint, making it perfect for establishments with limited space. Collectively, these models reflect Hoshizaki's commitment to innovation, efficiency, and reliability in ice-making technology, making them a top choice for businesses that require substantial ice production without compromising on quality or safety. Whether you need a powerful ice machine for a bar, restaurant, or convenience store, Hoshizaki’s KM-1601 series delivers performance that you can depend on.
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