Manuals / Hoshizaki / Kitchen Appliance / Freezer

Hoshizaki HUR68A(-D), HWR40A(-D) II. General Information A. Construction, Evaporator Case

Models: HWR68A(-D) HUR40A(-D) HUR68A(-D) HUR96A(-D) HWR40A(-D)

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II. General Information

II. General Information

A. Construction

Hoshizaki undercounters feature a cartridge-type refrigeration unit that can be removed without taking off the top and side panels.

	Front Panel
	Evaporator Assembly
Evaporator Case	Evaporator Case Cover

Side Panel

Control Box

			Access Valve (Low-Side)
	Compressor		Condenser
	Capillary Tube/Suction		Condenser Fan Motor
	Line Assembly		Condenser Fan Motor
	Line Assembly	Compressor Base
		Compressor Base
	Evaporator Case Cover	Thermal Fuse
	Defrost Thermostat		Defrost Thermistor
	Defrost Heater		Evaporator Shroud
	Defrost Heater
	Cabinet Thermistor		Evaporator Fan Motor
	Cabinet Thermistor		Evaporator
			Evaporator
		Evaporator Case

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Hoshizaki HUR68A(-D), HWR40A(-D), HUR96A(-D), HUR40A(-D), HWR68A(-D) II. General Information A. Construction, Evaporator Case

Contents

SERVICE MANUAL ModelsCommercial Refrigerators & Freezers Undercounter & Worktop Series HoshizakiHoshizaki America, IncENERGY STAR CONTENTS III. Service Diagnosis A. Alarm Codes1. Alarm Display Priority 2. Alarm Details and CountermeasuresI. Specifications A. Nameplate Ratings B. DimensionsUndercounter Model Names HUR96A-D, HWR96A-D1. HUR40A, HUF40A Units mm in 1a. HUR40A-D, HUF40A-D 2. HWR40A, HWF40A 2a. HWR40A-D, HWF40A-DUnits mm in 3. HUR68A, HUF68A 3a. HUR68A-D, HUF68A-DUnits mm in 4. HWR68A, HWF68A 4a. HWR68A-D, HWF68A-DUnits mm in 5a. HUR96A-D 5. HUR96A Units mm in6. HWR96A Units mm in 6a. HWR96A-D II. General Information A. Construction Evaporator CaseB. Sequence of Operation and Timing Charts 1. Refrigerators - Continuous Operating Modea Sequence of Operation POWER ON Board Self CheckTiming Chart Defrost IndicatorPower ON Time2. Freezers - Continuous Operating Mode a Sequence of OperationTiming Chart Defrost IndicatorPower ON Time3. Refrigerators - Energy Saving Operating Mode POWER ON Board Self Check2-minute Delay a Sequence of OperationTiming Chart Defrost IndicatorPower ON Defrost Thermistor4. Freezers - Energy Saving Operating Mode POWER ON2-minute Delay a Sequence of OperationTiming Chart Defrost IndicatorPower ON Defrost Thermistor1. Start-Up Delay C. Control BoardRelay Wiring Harness K311 Thermistor Wiring Harness K151Rear FrontD. Settings and Diagnostics 1. Gaining Access to Settings and Diagnostics2. Temperature Display a Switching the Display Between Fahrenheit and Celsius F5b Adjusting the Setpoint Temperature c Cabinet Temperature Correction calibration factor 3. Settings and Diagnostics Menu Freezerearlier b Defrost Termination Temperature F1 a Defrost Interval F0c Setpoint Temperature Differential F2 d High Temperature Alarm Delay Time F3 e Low Temperature Alarm Delay Time F4Detection Time f Temperature Display Scale F5 g Alarm History F6Alarm Code Descriptionh Compressor Run Time F7 4. Operating ModesE. Perimeter Frame Heater a Continuousb Energy Saving c Automatic Corrections Made During Energy Saving Operating ModeIII. Service Diagnosis A. Alarm Codes 1. Alarm Display Priority 2. Alarm Details and Countermeasures a. High Temperature Alarm E1Reset Options Possible Causesb. Low Temperature Alarm E2 Reset OptionsPossible Causes c. Defrost Alarm E3 d. High Pressure Alarm E4Reset Options Reset Optionse. Clogged Filter Alarm E7 Reset OptionsPossible Causes f. Defrost Temperature Sensor Malfunction Alarm E8 Reset OptionsPossible Causes g. Clogged Filter Sensor Malfunction Alarm E9 Reset OptionsPossible Causes h. Control Board Error Alarms EA and ED Reset OptionsB. Diagnosis Chart ProblemPossible Cause RemedyProblem Possible CauseRemedy Problem Possible CauseRemedy C. Thermistor Check IV. Removal and Replacement of Components A. Service for Refrigerant Lines1. Refrigerant Recovery 2. Brazing3. Evacuation and Recharge B. Removal and Replacement of Refrigeration Unit C. Removal and Replacement of CompressorD. Removal and Replacement of Evaporator 5 Recover the refrigerant and store it in an approved container 17 Plug in the unit, and turn on the power supply10 Remove the evaporator and drier 11 Place the new evaporator and new drier in positionE. Removal and Replacement of Capillary Tube / Suction Line Assembly F. Removal and Replacement of Thermistors Cabinet ThermistorDefrost Thermistor Clogged Filter Thermistor sensorG. Removal and Replacement of Door Gasket H. Removal and Replacement of Defrost HeaterI. Removal and Replacement of Control Board J. Removal and Replacement of Fan Motors K. Door Re-Hinging and Drawer ConversionCondenser Fan Motor Evaporator Fan MotorV. Cleaning and Maintenance Instructions A. Cleaning1. Stainless Steel Exterior 2. Stainless Steel InteriorB. Maintenance 5. Air Filter6. Shelves 7. DrawersVI. Wiring Diagrams A1. HUR40A, HWR40A auxiliary code Q5 and earlier A2. HUR40A-D, HWR40A-D auxiliary code Q6 and later B. HUF40A-D, HWF40A-D C1. HUR68A, HWR68A auxiliary code Q5 and earlier C2. HUR68A-D, HWR68A-D auxiliary code Q6 and later D. HUF68A-D, HWF68A-D E. HUR96A-D, HWR96A-D