Manuals / Hoshizaki / Kitchen Appliance / Freezer

Hoshizaki HUR96A(-D), HWR40A(-D) h. Control Board Error Alarms EA and ED, Reset Options

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

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h. Control Board Error Alarms (EA and ED)

"EA" is displayed when an EEPROM write error is detected. "ED" is displayed when an EEPROM verification or read error is detected.

Reset Options

Replacing the control board with a functioning replacement control board will eliminate this error condition.

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Hoshizaki HUR96A(-D), HWR40A(-D), HUR68A(-D), HUR40A(-D), HWR68A(-D) h. Control Board Error Alarms EA and ED, Reset Options

Contents

Models SERVICE MANUALCommercial Refrigerators & Freezers Undercounter & Worktop Series HoshizakiHoshizaki America, IncENERGY STAR CONTENTS A. Alarm Codes III. Service Diagnosis1. Alarm Display Priority 2. Alarm Details and CountermeasuresB. Dimensions I. Specifications A. Nameplate RatingsUndercounter Model Names HUR96A-D, HWR96A-D1. HUR40A, HUF40A Units mm in 1a. HUR40A-D, HUF40A-D Units mm in 2. HWR40A, HWF40A2a. HWR40A-D, HWF40A-D Units mm in 3. HUR68A, HUF68A3a. HUR68A-D, HUF68A-D Units mm in 4. HWR68A, HWF68A4a. HWR68A-D, HWF68A-D 5. HUR96A Units mm in 5a. HUR96A-D6. HWR96A Units mm in 6a. HWR96A-D Evaporator Case II. General Information A. Construction1. Refrigerators - Continuous Operating Mode B. Sequence of Operation and Timing Chartsa Sequence of Operation POWER ON Board Self CheckDefrost Indicator Timing ChartPower ON Timea Sequence of Operation 2. Freezers - Continuous Operating ModeDefrost Indicator Timing ChartPower ON TimePOWER ON Board Self Check 3. Refrigerators - Energy Saving Operating Mode2-minute Delay a Sequence of OperationDefrost Indicator Timing ChartPower ON Defrost ThermistorPOWER ON 4. Freezers - Energy Saving Operating Mode2-minute Delay a Sequence of OperationDefrost Indicator Timing ChartPower ON Defrost ThermistorC. Control Board 1. Start-Up DelayThermistor Wiring Harness K151 Relay Wiring Harness K311Rear Front1. Gaining Access to Settings and Diagnostics D. Settings and Diagnosticsb Adjusting the Setpoint Temperature 2. Temperature Displaya Switching the Display Between Fahrenheit and Celsius F5 c Cabinet Temperature Correction calibration factor earlier 3. Settings and Diagnostics MenuFreezer a Defrost Interval F0 b Defrost Termination Temperature F1c Setpoint Temperature Differential F2 Detection Time d High Temperature Alarm Delay Time F3e Low Temperature Alarm Delay Time F4 g Alarm History F6 f Temperature Display Scale F5Alarm Code Description4. Operating Modes h Compressor Run Time F7a Continuous E. Perimeter Frame Heaterb Energy Saving c Automatic Corrections Made During Energy Saving Operating ModeIII. Service Diagnosis A. Alarm Codes 1. Alarm Display Priority a. High Temperature Alarm E1 2. Alarm Details and CountermeasuresReset Options Possible CausesPossible Causes b. Low Temperature Alarm E2Reset Options d. High Pressure Alarm E4 c. Defrost Alarm E3Reset Options Reset OptionsPossible Causes e. Clogged Filter Alarm E7Reset Options Possible Causes f. Defrost Temperature Sensor Malfunction Alarm E8Reset Options Possible Causes g. Clogged Filter Sensor Malfunction Alarm E9Reset Options Reset Options h. Control Board Error Alarms EA and EDProblem B. Diagnosis ChartPossible Cause RemedyRemedy ProblemPossible Cause Remedy ProblemPossible Cause C. Thermistor Check A. Service for Refrigerant Lines IV. Removal and Replacement of Components1. Refrigerant Recovery 2. Brazing3. Evacuation and Recharge C. Removal and Replacement of Compressor B. Removal and Replacement of Refrigeration UnitD. Removal and Replacement of Evaporator 17 Plug in the unit, and turn on the power supply 5 Recover the refrigerant and store it in an approved container10 Remove the evaporator and drier 11 Place the new evaporator and new drier in positionE. Removal and Replacement of Capillary Tube / Suction Line Assembly Cabinet Thermistor F. Removal and Replacement of ThermistorsDefrost Thermistor Clogged Filter Thermistor sensorH. Removal and Replacement of Defrost Heater G. Removal and Replacement of Door GasketI. Removal and Replacement of Control Board K. Door Re-Hinging and Drawer Conversion J. Removal and Replacement of Fan MotorsCondenser Fan Motor Evaporator Fan MotorA. Cleaning V. Cleaning and Maintenance Instructions1. Stainless Steel Exterior 2. Stainless Steel Interior5. Air Filter B. Maintenance6. 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