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

Page 63

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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Contents Superior Degree Reliability Number Issued Revised Hoshizaki AMERICA, INC Contents Page Unit Important Safety InformationSerious injury Indicates important information about the use and careKM-1601SAH air-cooled Specifications IcemakerKM-1601SAH3 air-cooled Water Cooled Condenser KM-1601SWH water-cooledKM-1601SWH3 water-cooled 12.8 a 5 Min. Freeze AT 104F / WT 80F 100 1512 1482 1317 Crescent Cube 100 1475 1462 1261 Crescent Cube 100 1510 1426 1184 Crescent Cube 100 1520 1482 1273 Crescent Cube 100 1468 1465 1231 Crescent Cube URC-21F Condenser UnitURC-22F KM-1601SAH/3 air-cooled II. General Information ConstructionWRV KM-1601SWH/3 water-cooledKM-1601SRH/3 remote air-cooled Sequence Cycles and Shutdown Sequence of OperationPump-Out Cycle S4 Dip Switch Setting Pump-Out 1st Pump-Out FrequencyKM-1601SWH/3 and KM-1601SRH/3 E Control Board Harvest Cycle Sequence Flow Chart Cycle Steps Minute Fill Harvest Cycle KM-1601SWH/3 and KM-1601SRH/3 EControl Board Control Board Control Board LayoutPart Number 2A1410-01 factory 2A1410-02 service Energized Time LEDs are On Components Min Max Avg LED Lights and Audible Alarm SafetiesNo. of Beeps Type of Alarm Every 3 sec Sequence StepSetting Pump-Out Cycle Comp, FMR, WV Seconds Pump-out timer Controls and Adjustments S4 Dip SwitchS5 Dip Switch Do Not Adjust S5 Dip Switch No Model Time seconds Inlet S4 Dip Switch Setting Time SecondsPump-Out Frequency Control S4 dip switch 5 S4 Dip Switch Setting Time Minutes Freeze Timer S4 dip switch 9Control Switch Tank III. Technical Information1601SWH/3 water-cooled Float Switch Vapor Service Valve High-Pressure Switch Wiring DiagramsKM-1601SAH3 air-cooled KM-1601SWH water-cooled, KM-1601SRH remote air-cooled Pressure-High* Switch ModelKM-1601SWH3 water-cooled, KM-1601SRH3 remote air-cooled Performance Data 2610 14561345 23702410 14921523 23002390 15551565 22702640 15831472 2440785 15641505 27002710 15311490 25601583 2960 15851511 25802780 15301498 2490Diagnostic Procedure IV. Service DiagnosisPage Frequency Diagnosis Control Correct LED Model Board Lighting Sequence Control Board CheckBin Control Check Float Switch Check Float Switch Check and CleaningFloat Switch Cleaning Thermistor Check Adjustment of Water Regulating Valve water-cooled modelDiagnostic Charts No Ice ProductionNo Ice Production Possible Cause Operating erratically Freeze Up Freeze Up Possible Cause Harvest CycleFreeze Cycle Long Freeze Cycle Low Ice ProductionFreeze Up Possible Cause Low Ice Production Possible Cause Long Harvest CycleLow Ice Production Possible Cause Replacement of Components Service for Refrigerant LinesRefrigerant Recovery Evacuation and Recharge R-404A BrazingPage Component Important Notes for Component ReplacementCleaning and Sanitizing Instructions VI. Cleaning and MaintenanceCleaning Procedure Sanitizing Procedure Following Cleaning Procedure Preparing the Icemaker for Long Storage MaintenanceDrain the water tank

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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