Hoshizaki HUR68A(-D), HWR40A(-D), HUR96A(-D), HUR40A(-D), HWR68A(-D) service manual Energy Star

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IMPORTANT

Only qualified service technicians should attempt to service or maintain this unit. No such service or maintenance should be undertaken until the technician has thoroughly read this Service Manual.

Hoshizaki provides this manual primarily to assist qualified service technicians in the service and maintenance of the unit.

Should the reader have any questions or concerns which have not been satisfactorily addressed, please call, write or send an e-mail message to the Hoshizaki Technical Support Department for assistance.

HOSHIZAKI AMERICA, INC.

618 Highway 74 South

Peachtree City, GA 30269

Attn: Hoshizaki Technical Support Department

Phone: 1-800-233-1940 Technical Support

(770)487-2331 Fax: 1-800-843-1056

(770)487-3360

E-mail: techsupport@hoshizaki.com

Web Site: www.hoshizaki.com

NOTE: To expedite assistance, all correspondence/communication MUST include the following information:

•Model Number __________________________

•Serial Number __________________________

•Complete and detailed explanation of the problem.

ENERGY STAR®

Products earning the ENERGY STAR prevent greenhouse gas emissions by meeting strict energy efficiency guidelines set by the U.S. Environmental Protection Agency and the U.S. Department of Energy. Several models of Hoshizaki undercounters have earned the ENERGY STAR. To easily determine if your unit has earned the ENERGY STAR, see the nameplate attached to the right wall on the inside of the cabinet.

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Contents Superior Degree Reliability Energy Star Contents Page Undercounter Model Names Specifications Nameplate RatingsDimensions HUR40A, HUF40A Units mm 1a. HUR40A-D, HUF40A-D HWR40A, HWF40A 2a. HWR40A-D, HWF40A-DHUR68A, HUF68A 3a. HUR68A-D, HUF68A-DHWR68A, HWF68A 4a. HWR68A-D, HWF68A-DHUR96A Units mm 5a. HUR96A-D HWR96A Units mm 6a. HWR96A-D II. General Information Construction Evaporator CaseSequence of Operation Sequence of Operation and Timing ChartsRefrigerators Continuous Operating Mode Timing Chart OperatingFreezers Continuous Operating Mode Freezers Continuous Refrigerators Energy Saving Operating Mode Defrost End Defrost thermistor reaches defrostEnergy Freezers Energy Saving Operating Mode Board Self Check Minute DelayFreezers Energy Start-Up Delay Control BoardRear Relay Wiring Harness K311Thermistor Wiring Harness K151 FrontSettings and Diagnostics Gaining Access to Settings and DiagnosticsAdjusting the Setpoint Temperature Temperature DisplaySwitching the Display Between Fahrenheit and Celsius F5 Cabinet Temperature Correction calibration factor Settings and Diagnostics Menu Later SectionDefrost Termination Temperature F1 Defrost Interval F0Setpoint Temperature Differential F2 High Temperature Alarm Delay Time F3 Low Temperature Alarm Delay Time F4Temperature Display Scale F5 Alarm History F6Compressor Run Time F7 Operating ModesEnergy Saving Perimeter Frame HeaterContinuous III. Service Diagnosis Alarm Codes Alarm Signals Alarm Code ProblemAlarm Display Priority Error Code Priority DescriptionReset Options Alarm Details and CountermeasuresHigh Temperature Alarm E1 Possible CausesLow Temperature Alarm E2 Defrost Alarm E3 High Pressure Alarm E4Clogged Filter Alarm E7 Defrost Temperature Sensor Malfunction Alarm E8 Clogged Filter Sensor Malfunction Alarm E9 Control Board Error Alarms EA and ED Diagnosis Chart Problem Possible Cause RemedyProblem Possible Cause Remedy Problem Possible Cause Remedy Thermistor Check Refrigerant Recovery IV. Removal and Replacement of ComponentsService for Refrigerant Lines BrazingEvacuation and Recharge Removal and Replacement of Refrigeration Unit Removal and Replacement of CompressorRemoval and Replacement of Evaporator Page Page Defrost Thermistor Removal and Replacement of ThermistorsCabinet Thermistor Clogged Filter Thermistor sensorRemoval and Replacement of Door Gasket Removal and Replacement of Defrost HeaterRemoval and Replacement of Control Board Condenser Fan Motor Removal and Replacement of Fan MotorsDoor Re-Hinging and Drawer Conversion Evaporator Fan MotorCleaning and Maintenance Instructions CleaningShelves MaintenanceAir Filter Drawers115/60/1 A2. HUR40A-D, HWR40A-D auxiliary code Q6 and later HUF40A-D, HWF40A-D C1. HUR68A, HWR68A auxiliary code Q5 and earlier C2. HUR68A-D, HWR68A-D auxiliary code Q6 and later HUF68A-D, HWF68A-D HUR96A-D, HWR96A-D