b) KM-1601SWH/3 and KM-1601SRH/3 "E" Control Board

At startup, a 5-second delay occurs while the control board conducts an internal timer check. A beep occurs when power is turned off. The red LED indicates proper control voltage and remains on unless a control voltage problem occurs. The green LEDs 1 through 4 energize and sequence from initial startup as listed in the table below. Note that the order of the LEDs from the outer edge of the control board is 1, 4, 3, 2.

For details, see "II.B. Sequence of Operation."

Sequence Step

LED

Energized

 

Time LEDs are On

Components

Min.

Max.

Avg.

 

 

1-Minute Fill Cycle

4

WV

 

 

1 minute

Harvest Cycle

1, 4, 2

Comp, FMR, WV,

2 minutes

20 minutes

3 to 5 minutes

 

 

HGV

 

 

 

Freeze Cycle

1

Comp, FMR, PM,

5 minutes

freeze timer

30 to 35 minutes

 

 

LLV

 

setting

 

Pump-Out Cycle

1, 4*, 3, 2

Comp, FMR, WV*,

10 seconds

20 seconds

*pump-out timer

 

 

PM, HGV

 

 

setting

The built-in safeties shut down the unit and have alarms as listed below.

No. of Beeps

Type of Alarm

Notes

(every 3 sec.)

 

 

1

High Evaporator Temp.

Check for harvest problem (stuck HGV or relay), hot

 

(temperature > 127°F (53°C))

water entering unit, stuck HM, or shorted thermistor.

2

Harvest Backup Timer

Orange "H TIMER" LED on.

 

(harvest > 20 min. for two cycles

Check for open thermistor, HGV not opening, TXV or

 

in a row)

LLV leaking by, low charge, inefficient Comp, or WRV

 

 

leaking by.

3

Freeze Timer

Yellow "F TIMER" LED on.

 

(freeze > freeze timer setting for

Check for F/S stuck closed (up), WV leaking by, HGV

 

two cycles in a row)

leaking by, PM not pumping, TXV not feeding properly,

 

Timer is factory set using S4 dip

LLV not opening, low charge, HM not bypassing, or

 

switch 9 & 10

inefficient Comp.

To reset the above safeties, press the "ALARM RESET" button with the power supply on.

6

Low Voltage

Red LED turns off if voltage protection operates.

 

(92Vac±5% or less)

The control voltage safeties automatically reset when

7

High Voltage

voltage is corrected.

 

(147Vac±5% or more)

 

Legend: Comp–compressor; FMR–fan motor-remote; F/S–float switch; HGV–hot gas valve; HM–headmaster (C.P.R.); LLV–liquid line valve; PM–pump motor; TXV–thermostatic expansion valve; WRV–water regulating valve; WV–inlet water valve

31

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Hoshizaki KM-1601SAH/3, KM-1601SWH/3, KM-1601SRH/3 service manual Setting Pump-Out Cycle Comp, FMR, WV Seconds Pump-out timer
Page 30 Page 32

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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