5)Freeze Cycle – LED 1 is on. Comp and FM/FMR remain energized, PM energizes or, for KM-1601SAH/3, remains energized. LLV energizes. HGV and X10 relay (KM‑1601SAH/3) de‑energize. The unit is held in freeze by a 5-minute short cycle protection timer (CB will not accept a signal from F/S during the first 5 minutes of freeze). After the 5-minute short cycle protection timer terminates, CB turns freeze termination over to F/S. Diagnosis: Check that Comp, FM/FMR, PM, and LLV are energized. Confirm that the evaporator temperature drops. If not, confirm that LLV has energized and is open. Make sure WV and HGV are de‑energized and closed. Next, confirm proper unit pressures and TXV operation, check for an inefficient Comp or an inoperative HM. After 5 minutes in freeze, disconnect black F/S connector from CB BLACK K5 connector. After a 15 second delay, the unit should switch out of freeze. If the unit switches out of freeze with F/S connector removed, but would previously not switch out of freeze with F/S connected (long freeze - 3 beep alarm), F/S may be sticking. To check and clean F/S, see "IV.D. Float Switch Check and Cleaning." If the unit remains in freeze longer than 15 seconds after disconnecting black F/S connector, replace CB. For short freeze cycle, check that reservoir is full at beginning of freeze, pump-out check valve is not leaking by, and drain plug is in and not leaking.

Note: Normal freeze cycle will last 20 to 40 minutes depending on model and conditions. Cycle times and pressures should follow performance data provided in this manual. See "III.C. Performance Data."

6)Pump-Out Cycle – (10/20 second pump-out) – LEDs 1, 3, and 2 are on. LED 4 is

on when S4 dip switch 3 & 4 are set to 3 off and 4 on. CAUTION! for KM-1601SAH/3:

Do not adjust S4 dip switch 3 & 4 to 3 off and 4 on. Adjustment to this position on this model prevents the pump motor from rotating in the pump-out direction.

Comp and FM/FMR remain energized, HGV energizes. WV energizes if S4 dip switch 3 off and 4 on. LLV de‑energizes. PM de-energizes for 2 seconds, then reverses for 10/20 seconds depending on pump‑out timer S4 dip switch 3 & 4 setting. When the pump‑out timer terminates, the pump-out is complete. The pump-out frequency control is factory set for every 10th cycle (except for KM-1601SRH/3 utilizing 3U0111-02 water valve), and generally no adjustment is required. However, where water quality is bad and the icemaker needs a pump-out more often, the pump-out frequency can be adjusted.

The pump-out frequency control (S4 dip switch 5 & 6) can be set to have a pump-out occur every cycle, or every 2, 5, or 10 cycles. Timing of the first pump-out is dependent on the control board. For KM-1601SAH/3 "G" CB, first pump-out is dependent on S4 dip switch 5 & 6. See the table below. For KM-1601SWH/3 and KM-1601SRH/3 "E" CB, first pump‑out occurs after the first freeze cycle.

KM-1601 SAH/3 "G" & KM-1601SWH/3 & KM-1610SRH/3 "E" Control Board Settings

 

 

 

1st Pump-Out

 

 

 

 

 

S4 Dip Switch Setting

 

 

KM-1601SWH/3

 

 

Pump-Out

KM-1601SAH/3

KM-1601SRH/3

 

 

No. 5

No. 6

Frequency

"G" Control Board

"E" Control Board

 

 

 

 

 

OFF

OFF

Every cycle

After 2nd freeze cycle

After 1st freeze cycle

ON

OFF

Every 2 cycles

After 3rd freeze cycle

 

 

 

 

 

 

OFF

ON

Every 5 cycles

After 6th freeze cycle

 

 

 

 

 

 

ON

ON

Every 10 cycles

After 11th freeze cycle

 

 

 

 

 

 

56

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Hoshizaki KM-1601SRH/3, KM-1601SWH/3, KM-1601SAH/3 service manual Frequency
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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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