Hoshizaki KM-2400SRF3, KM-2400SRH3 service manual Checking the Controller Board

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5) Freeze Timer

CAUTION

Adjust to proper specification, or the unit may not operate correctly.

Two new dip switches numbered 9 and 10 have been added to the improved “E” board to better prevent possible freeze ups. These settings come factory set to the default setting of 50 min. (OFF, ON). Check the adjustment chart published in the Tech Specs for proper settings.

SETTING

 

TIME

Dip Switch

Dip Switch

 

No. 9

 

No. 10

 

OFF

 

OFF

60 min.

ON

 

OFF

70 min.

OFF

 

ON

50 min.

ON

 

ON

60 min.

6) Bin Control

CAUTION

When the ambient temperature is below 45°F, the Bin Control Thermostat operates to stop the icemaker even if the Ice Storage Bin is empty. When the Thermostat is set in the prohibited range, the icemaker operates con- tinuously even if the Ice Storage Bin is filled with ice. Setting in the prohib- ited range might cause severe damage to the icemaker resulting in failure.

No adjustment is required under normal use, as the Bin Control is factory-adjusted. Adjust it, if necessary, so that the icemaker stops automatically within 10 seconds after ice contacts the Bin Control Thermostat Bulb.

[e] CHECKING THE CONTROLLER BOARD

1)Visually check the sequence with the icemaker operating.

2)Visually check the Controller Board by using the following procedures.

(i)Adjust the Defrost Timer to minimum position. Disconnect the Thermistor from the Controller Board.

Connect a 1.5 k- 3.5 kresistor to the Connector K3 (pins #1 and #2), and energize the unit.

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Contents Stackable Crescent Cuber Hoshizaki AMERICA, INC Contents Maintenance Specifications Condensing UNIT, URC-24F Specifications Model URC-24F II. General Information Construction Features of Control Products E Controller Board Controller BoardSOLID-STATE Control Controller BoardPage Beep every 3 sec. = High Evaporator Temperature 127 F Minute Fill CycleHarvest Cycle Freeze CycleControl Products HOSHIZAKI001 Board Control Products HOS-001A Board Sequence 1st Cycle 2nd Cycle and after with pump drain Important Water Valve opening is limited to 6 minutes2nd Cycle and after with no pump drain Controls and Adjustments OFFSetting Time Setting Frequency Checking the Controller Board Page III. Technical Information Wiring Diagram Timing Chart Page Performance Data IV. Service Diagnosis No ICE Production Problem Possible Cause RemedyController Board Problem Possible Cause Remedy Evaporator is Frozen UP ThermistorOthers LOW ICE ProductionAbnormal ICE Removal and Replacement of Components Service for Refrigerant LinesRefrigerant Recovery Evacuation and Recharge R-404ABrazing Removal and Replacement of Compressor Important Removal and Replacement of Drier Removal and Replacement of Expansion Valve Removal and Replacement of HOT GAS Valve and Line Valve Removal and Replacement of Evaporator Important Page Removal and Replacement of Thermistor Caution Removal and Replacement of FAN Motor Removal and Replacement of Water Valve Removal and Replacement of Pump MotorRemoval and Replacement of Spray Tubes VI. Cleaning and Maintenance Instructions Important Preparing the Icemaker for Long StoragePage Cleaning Procedure Cleaning Procedure Page Sanitizing Procedure Following Cleaning Procedure Maintenance