Hoshizaki HUR40A(-D), HWR40A(-D), HUR96A(-D), HUR68A(-D) Setpoint Temperature Differential F2

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3)Press the unmarked, blank button to display the current setting. Press the up or

down button to increase or decrease the defrost termination temperature.

Note: The defrost termination temperatures can be adjusted within the following ranges:

•Refrigerator: 59 to 68°F (15 to 20°C) in one degree increments

•Freezer: 41 to 68°F (5 to 20°C) in one degree increments

4)Press the unmarked, blank button to save the setting.

5)Press the MANUAL DEFROST button to return to the menu screen. Press and hold

both the button and the unmarked, blank button for 5 seconds to exit the setting mode and return to the temperature display.

6)If a jumper was present between connector K151 pins 7 and 8, reconnect it after all setting and diagnostic work is complete.

c)Setpoint Temperature Differential (F2)

To change the differential, follow the steps below.

1)Make sure the jumper is removed between connector K151 pins 7 and 8 on the control board. Otherwise you will not be able to access this setting. For details, see "D.1. Gaining Access to Settings and Diagnostics."

2)Press and hold both the button and the unmarked, blank button for 5 seconds. "F0" should appear in the display window. Press the MANUAL DEFROST button until "F2" appears in the display window.

3)Press the unmarked, blank button to display the current + setting (the decimal

between the digits is not shown). Press the up or down button to increase or decrease the + (plus) differential in .9°F increments.

Note:

•Both the + and - values can be adjusted between 0.0 and 6.3°F in .9°F increments (0.0 to 3.5°C in .5°C increments).

•You cannot set both + and - to 0.0.

4)Press the unmarked, blank button to save the + setting and move to the - (minus) differential setting.

5)Press the up or down button to increase or decrease the - (minus) differential in

.9F increments. Note:

•Both the + and - values can be adjusted between 0.0 and 6.3°F in .9°F increments (0.0 to 3.5°C in .5°C increments).

•You cannot set both + and - to 0.0.

6)Press the unmarked, blank button to save the - (minus) setting. The - (minus) sign will turn off and the display will change to the + (plus) differential setting.

7)Press the MANUAL DEFROST button to return to the menu screen. Press and hold

both the button and the unmarked, blank button for 5 seconds to exit the setting mode and return to the temperature display.

8)If a jumper was present between connector K151 pins 7 and 8, reconnect it after all setting and diagnostic work is complete.

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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-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 CaseRefrigerators Continuous Operating Mode Sequence of Operation and Timing ChartsSequence of Operation 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 BoardRelay Wiring Harness K311 Thermistor Wiring Harness K151Rear FrontSettings and Diagnostics Gaining Access to Settings and DiagnosticsSwitching the Display Between Fahrenheit and Celsius F5 Temperature DisplayAdjusting the Setpoint Temperature 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 ModesContinuous Perimeter Frame HeaterEnergy Saving III. Service Diagnosis Alarm Codes Alarm Signals Alarm Code ProblemAlarm Display Priority Error Code Priority DescriptionAlarm Details and Countermeasures High Temperature Alarm E1Reset Options 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 IV. Removal and Replacement of Components Service for Refrigerant LinesRefrigerant Recovery BrazingEvacuation and Recharge Removal and Replacement of Refrigeration Unit Removal and Replacement of CompressorRemoval and Replacement of Evaporator Page Page Removal and Replacement of Thermistors Cabinet ThermistorDefrost Thermistor Clogged Filter Thermistor sensorRemoval and Replacement of Door Gasket Removal and Replacement of Defrost HeaterRemoval and Replacement of Control Board Removal and Replacement of Fan Motors Door Re-Hinging and Drawer ConversionCondenser Fan Motor Evaporator Fan MotorCleaning and Maintenance Instructions CleaningMaintenance Air FilterShelves 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
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