Manuals / Hoshizaki / Kitchen Appliance / Refrigerator

Hoshizaki HR24A Serial Network Do Not Adjust, Service Menu, Unit, Factory Setting, Description

Models: HR24A

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Serial Network (Do Not Adjust)

Serial Network (Do Not Adjust)

Service Menu	Min.	Max.	Unit	Factory Setting	Description
LA	1	247	---	247	Address (not used)

Lb	0	3	---	2	Baud Rate (not used)

LP	0	2	---	2	Parity (not used)

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Hoshizaki HR24A service manual Serial Network Do Not Adjust, Service Menu, Unit, Factory Setting, Description

Contents

HoshizakiHoshizaki America, Inc Number IssuedUndercounter Refrigerator Model HR24A “A Superior Degree of Reliability”Attn Hoshizaki Technical Support Department Complete and detailed explanation of the problemHOSHIZAKI AMERICA, INC 618 Highway 74 South Peachtree City, GACONTENTS 1. Exterior VI. Cleaning and Maintenance InstructionsA. Cleaning B. MaintenanceImportant Safety Information WARNING, continued 1. Storage Capacity I. SpecificationsB. Storage Capacity and Dimensions A. Electrical and Refrigerant DataUnit mm in 2. Dimensions1. HR24A II. General Information A. Construction2. Cool Down B. Sequence of OperationaRefrigerator 1. Startup7. Energy Saving Mode 4. Cool Down Restart5. Defrost Initiation 6. Defrost Termination2. Cool Down HR24A Sequence Flow Chart2. Sequence Flow Chart 1. StartupC. Control Board and Display Module 2. Display Module Layout 1. Control Board Layout1. Default Settings D. Cabinet TemperatureaAdjusting the Temperature Setpoint b Manual DefrostF. Control Panel Lockout E. Display Module Iconsa High and Low Temperature Alarm Values AH or AL G. Alarm Safeties2Service Menu List H.Service Menua Service Menu Access 1Enter Service Menub Service Menu Chart Unit Defrost Do Not AdjustService Menu Factory SettingUnit Temperature Alarm Do Not AdjustService Menu Factory SettingEvaporator Fan Motor Do Not Adjust Unit Serial Network Do Not AdjustService Menu Factory SettingCompressor III. Technical Data A. Refrigeration CircuitLeft Side Perimeter Liquid Line Condenser Drier Evaporator Capillary Tube Evaporator Fan Motor1. HR24A B. Wiring DiagramA.Diagnostic Procedure IV. Service Diagnosis2-min.Comp delay timer starts. Comp icon flashes until 2-min.Comp delay timer terminates. Diagnosis Check that CT LEDs and EvapFM icon turn on. Next, check that EvapFM energizes. If not, confirm that DS is engaged. Check across DS for 5VDC. If 5VDC is not present, check DS activation lever and DS continuity. Note DS contacts are open when DS is engaged. If 5VDC is present, check CB EvapFM connector for 12VDC. If 12VDC is not present, replace CB. If 12VDC is present, check EvapFM wiring connector for loose connection, EvapFM continuity, and fan blade for binding 12Energy Saving Mode 10Defrost B. Control Board CheckStartup and Cool Down C. Thermistor Check 1.Appliance Not Cooling D. Diagnostic ChartEvaporator is Frozen Up - Possible Cause 2. Evaporator is Frozen Up3. Defrost Fails to Start or Terminate 1.Refrigerant Recovery V. Replacement of ComponentsA.Service for Refrigerant Lines 3.Evacuation and Recharge R-134a 2. BrazingB.Important Notes for Component Replacement C. Door Reversal VI. Cleaning and Maintenance Instructions A. CleaningB. Maintenance When shutting down the appliance for more than one week, follow the instructions below VIII. Disposal