Hoshizaki SRH/3 KM-2100SWH3, SRH/3 KM-1400SWH-M, SWH3-M KM-1601SAH/3, SWH/3 Service Diagnosis

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B. Service Diagnosis

WARNING

•The appliance should be diagnosed and repaired only by qualified service personnel to reduce the risk of death, electric shock, serious injury, or fire.

•Risk of electric shock. Control switch in "OFF" position does not de‑energize all loads Use extreme caution and exercise safe electrical practices.

•Moving parts (e.g., fan blade) can crush and cut. Keep hands clear.

•Before servicing the appliance, move the control switch to the "OFF" position and turn off the power supply.

•CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are securely in place after the appliance is serviced. Make sure that none have fallen into the dispenser unit/ice storage bin.

•Make sure all food zones in the appliance and dispenser unit/ice storage bin are clean after service.

The diagnostic procedure is a sequence check that allows you to diagnose the electrical system and components. Before proceeding, check for correct installation, proper voltage per nameplate, and adequate water supply. Check CB using the steps in "II.C. Control Board Check." Check dip switch settings to assure that S4 dip switch 3, 4, 7, 8, 9, 10 and S5 dip switch 1 through 5 ("G" CB) 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 "III.C.1. Default Dip Switch Settings."

Note: • When checking high voltage (115VAC), always choose a white (W) neutral wire to establish a good neutral connection.

•On 3-phase models, the neutral (W) is provided through MT. To confirm a good neutral, check for 60VAC from white (W) neutral to ground (GND). If 60VAC is present, neutral is good. If 60VAC is not present, check 208-230VAC main power supply to MT. If 208-230VAC is present, check MT continuity.

•When checking voltage from the CB K1 connector (10 pin connector), pull CB

K1 connector out slightly to allow room for multimeter test leads contact.

1)Turn off the power supply, then access the control box. Move the control switch to the "OFF" position. Clear any ice from BC.

2)Check that BC is closed and the 115VAC 10A fuse is good.

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Contents Superior Degree Reliability Hoshizaki AMERICA, INC Contents Page 100 Important Safety Information Additional Warning for Remote Models Model Shown KM-1301SAH3 Air-Cooled Models SAH/3Model Shown KM-1301SWH3 Water-Cooled Models SWH/3/-MModel Shown KM-1301SRH3 Remote Models SRH/3Water-Cooled Models SWH/3 KMH ConstructionModel Shown KMH-2000SWH3 Model Shown KMH-2000SRH3 Water Tank DiagramWater Supply KM-2500SRH3 Water Shutdown Bin Full Icemaker Off Ice Level Lowered Restart Sequence of Operation Flow ChartTo 1 -Minute Fill Cycle Harvest Pump Timer Startup Control Board with Harvest Pump Timer OperationService Diagnosis G Control Board without Harvest Pump Timer Diagnosis Page Page OFF Shutdown E and G Control Board Control Board with Harvest Pump Timer Diagnosis Page Page Page Every cycle After 2nd freeze cycle Shutdown G Control Board Control Correct LED Board Lighting Sequence Control Board CheckBin Control Check Float Switch Check Float Switch Check and CleaningFloat Switch Cleaning Thermistor Check No Ice Production Diagnostic TablesNo Ice Production Possible Cause Freeze-Up Possible Cause Harvest Cycle Freeze-UpLow Ice Production Possible Cause Long Harvest Cycle Low Ice ProductionFreeze-Up Possible Cause Freeze CycleLow Ice Production Possible Cause Long Freeze Cycle III. Controls and Adjustments Control Board Control Board LayoutControl Board S5 Dip Switch K5 black Connector Bin Control Switch Open LED yellowPart Number Alarm Buzzer K2 ConnectorEnergized Time LEDs are On Components Min Max Avg LED Lights and Audible Alarm SafetiesNo. of Beeps Type of Alarm Every 3 sec Sequence StepControl Board Default Dip Switch Settings Settings and AdjustmentsS5 Dip Switch S4 Dip Switch G Control BoardsHarvest Timer S4 dip switch 1 S4 Dip Switch Setting Time sec Inlet Water Pump-Out Timer S4 dip switch 3Valve Control Board Pump-Out Frequency Control S4 dip switch 5Control Board 1st Pump-Out S4 Dip Switch Setting Frequency S4 Dip Switch SettingS4 Dip Switch Setting Time Min Factory Use S4 dip switchFreeze Timer S4 dip switch 9 Control Board S4 Dip Switch Setting Pump Motor Time secFloat Switch Selector S5 dip switch 1 G Control Board Control SwitchRefill Counter S5 dip switch 2 through 5 G Control Board Refrigeration Circuit Service Information IV. Refrigeration Circuit and Component Service InformationRefrigerant Recovery Evacuation and Recharge R-404A BrazingPage Component Component Service InformationWater Regulating Valve Adjustment water-cooled models Maintenance Schedule MaintenanceFrequency Area Task Remove the water from the icemaker water supply line VI. Preparing the Icemaker for Periods of Non-UseDrain the water tank Page VII. Disposal VIII. Technical Information Specification and Performance DataKM-1301SAH KM-1301SAH3 Electric & Water Consumption KM-1301SWH240 KM-1301SWH31770 237KM-1301SRH with URC-14F 214 KM-1301SRH3 with URC-14F463 192KM-1400SWH-M 230 KM-1400SWH3-M1700 1720228 KM-1601SAH1462 24501456 KM-1601SAH32610 241 KM-1601SWH257 KM-1601SWH3 12.8 a 5 Min. Freeze AT 104F/WT 80F 375 785213 207 KM-1601SRH with URC-22F Auxiliary Codes S-2 and Later755 352202 504247 781 KM-1601SRH3 with URC-22F Auxiliary Codes S-2 and Later 2480 KM-1900SAH1859 KM-1900SAH31650 KM-1900SWH1876 1850239 KM-1900SWH31814 2137KM-1900SRH with URC-21F 328 KM-1900SRH with URC-22F1857 2500332 KM-1900SRH3 with URC-21F1965 2680KM-1900SRH3 with URC-22F 2096 KM-2100SWH31794 270 KM-2100SRH3 with URC-22F3210 3822408 KM-2500SWH32174 3780 KM-2500SRH3 with URC-23F1464 KMH-2000SWH1821 2410KMH-2000SWH3 307 KMH-2000SRH with URC-22F1944 2570KMH-2000SRH3 with URC-22F KM-1601SWH, KM-1601SRH, KM-1900SH, KMH-2000SH Wiring DiagramsKM-2500SH3, KMH-2000SH3 Auxiliary Code Diagrams with Harvest Pump Timer Relays G Control BoardKM-1301SH3 Auxiliary Code T-0, U-0 KM-1301SH Auxiliary Code U-1 and Later and KM-1601SAH KM-1301SH3 Auxiliary Code U-1 and Later and KM-1601SAH3 KM-1400SWH-M KM-1400SWH3-M
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SRH/3 KM-1900SAH/3, SRH3 KM-2500SWH3, SRH3 KMH-2000SWH/3, SWH/3, KM-1301SAH/3 specifications

The Hoshizaki KM-1301SRH/3, KM-1301SWH/3, and KM-1301SAH/3 are advanced ice makers designed for commercial use, addressing a wide variety of needs in restaurants, hotels, and bars. These models are known for their efficiency, durability, and innovative technologies that ensure the production of high-quality ice.

One of the standout features of these units is their ability to produce a high volume of ice, reaching up to 1,300 pounds per day, which is crucial for establishments with heavy ice demands. The machines utilize advanced cooling technology, allowing for faster ice production and minimizing the time required to refill ice bins. This makes them ideal for busy settings where speed and efficiency are paramount.

The KM-1301 series employs a unique stainless steel exterior that not only ensures longevity and resistance to corrosion but also enhances the aesthetic appeal of any commercial kitchen or bar. The interior is designed for easy cleaning, helping to maintain hygiene standards vital for food safety.

These ice makers utilize the proprietary Hoshizaki Cubelet Ice system, producing small, chewy ice cubes that are perfect for various beverages and food displays. The advanced design of the ice-making mechanism ensures that ice is formed quickly and efficiently, reducing energy consumption. Additionally, Hoshizaki’s CycleSaver technology optimizes the production process by reducing the amount of water used, making these machines environmentally friendly.

Another characteristic is their self-diagnostic capability, which allows for real-time monitoring of unit performance and quicker troubleshooting, minimizing downtime. The built-in alerts notify operators of any issues or maintenance needs, ensuring that the ice-making process remains uninterrupted.

The KM-1301 series also provides user-friendly controls that allow easy adjustments and monitoring of ice production settings. This flexibility enables businesses to meet varying ice demands based on seasonality or special events.

In summary, the Hoshizaki KM-1301SRH/3, KM-1301SWH/3, and KM-1301SAH/3 ice makers are exemplary choices for commercial ice production. With their high output, durable design, energy efficiency, innovative technologies, and user-friendly features, they cater effectively to the rigorous demands of the foodservice industry while maintaining a commitment to quality and sustainability.
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