115/60/1 | Hoshizaki HUR40A(-D), HWR40A(-D), HUR96A(-D), HUR68A(-D)

VI. Wiring Diagrams

A1. HUR40A, HWR40A (auxiliary code Q5 and earlier)

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Transformer Output 10V at 115V

Note: Jumper (color: white) between pins 7 and 8 of connector K151 may not be present on all units, but this will not adversely affect performance.

CAUTION

Before diagnosing and/or servicing the unit, confirm that you have the proper wiring diagram by checking against the diagram located inside the front panel.

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Hoshizaki HUR40A(-D), HWR40A(-D), HUR96A(-D), HUR68A(-D), HWR68A(-D) service manual 115/60/1

Contents

Superior Degree Reliability Energy Star Contents Page Dimensions Specifications Nameplate RatingsUndercounter Model Names HUR40A, HUF40A Units mm 1a. HUR40A-D, HUF40A-D HWR40A, HWF40A 2a. HWR40A-D, HWF40A-D HUR68A, HUF68A 3a. HUR68A-D, HUF68A-D HWR68A, HWF68A 4a. HWR68A-D, HWF68A-D HUR96A Units mm 5a. HUR96A-D HWR96A Units mm 6a. HWR96A-D II. General Information Construction Evaporator Case Refrigerators Continuous Operating Mode Sequence of Operation and Timing ChartsSequence of Operation Timing Chart Operating Freezers Continuous Operating Mode Freezers Continuous Refrigerators Energy Saving Operating Mode Defrost End Defrost thermistor reaches defrost Energy Freezers Energy Saving Operating Mode Board Self Check Minute Delay Freezers Energy Start-Up Delay Control Board Rear Relay Wiring Harness K311Thermistor Wiring Harness K151 Front Settings and Diagnostics Gaining Access to Settings and Diagnostics Switching the Display Between Fahrenheit and Celsius F5 Temperature DisplayAdjusting the Setpoint Temperature Cabinet Temperature Correction calibration factor Settings and Diagnostics Menu Later Section Defrost Termination Temperature F1 Defrost Interval F0 Setpoint Temperature Differential F2 High Temperature Alarm Delay Time F3 Low Temperature Alarm Delay Time F4 Temperature Display Scale F5 Alarm History F6 Compressor Run Time F7 Operating Modes Continuous Perimeter Frame HeaterEnergy Saving III. Service Diagnosis Alarm Codes Alarm Signals Alarm Code Problem Alarm Display Priority Error Code Priority Description Reset Options Alarm Details and CountermeasuresHigh Temperature Alarm E1 Possible Causes Low Temperature Alarm E2 Defrost Alarm E3 High Pressure Alarm E4 Clogged 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 Remedy Problem Possible Cause Remedy Problem Possible Cause Remedy Thermistor Check Refrigerant Recovery IV. Removal and Replacement of ComponentsService for Refrigerant Lines Brazing Evacuation and Recharge Removal and Replacement of Refrigeration Unit Removal and Replacement of Compressor Removal and Replacement of Evaporator Page Page Defrost Thermistor Removal and Replacement of ThermistorsCabinet Thermistor Clogged Filter Thermistor sensor Removal and Replacement of Door Gasket Removal and Replacement of Defrost Heater Removal and Replacement of Control Board Condenser Fan Motor Removal and Replacement of Fan MotorsDoor Re-Hinging and Drawer Conversion Evaporator Fan Motor Cleaning and Maintenance Instructions Cleaning Shelves MaintenanceAir Filter Drawers 115/60/1 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