Hoshizaki JWE-620UA-6B service manual

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3.

Inadequate Rinse -----------------------------------------------------------------------------------

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4.

Dishwasher Will Not Start When Door Closed ----------------------------------------------

44

5.

No or Inadequate Detergent/Rinse Aid Supply ----------------------------------------------

45

6.

Wash Tank Water Boils ----------------------------------------------------------------------------

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7.

Wash Tank Water Not Draining------------------------------------------------------------------

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D. Float Switch Check and Cleaning------------------------------------------------------------------

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1.

Float Switch Check ---------------------------------------------------------------------------------

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2.

Float Switch Cleaning------------------------------------------------------------------------------

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E. Thermistor Check --------------------------------------------------------------------------------------

48

IV. Removal and Replacement of Components -------------------------------------------------------

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A. Removal of Panels-------------------------------------------------------------------------------------

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B. Accessing the Control Box ---------------------------------------------------------------------------

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C. Removal and Replacement of Internal Booster Tank -----------------------------------------

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D. Removal and Replacement of Wash Pump Motor---------------------------------------------

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E. Removal and Replacement of Rinse Pump Motor---------------------------------------------

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F. Removal and Replacement of Handle-------------------------------------------------------------

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G. Removal and Replacement of Door---------------------------------------------------------------

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H. Removal and Replacement of Spring Unit-------------------------------------------------------

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I. Removal and Replacement of Spring -------------------------------------------------------------

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J. Adjustment of Door Opening/Closing Force -----------------------------------------------------

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K. Removal and Replacement of Flush Pipe -------------------------------------------------------

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L. U-Packing Installation Instructions -----------------------------------------------------------------

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M. Removal and Replacement of Thermistor-------------------------------------------------------

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N. Removal and Replacement of Control Board or Operation Board-------------------------

61

1.

Control Board ----------------------------------------------------------------------------------------

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2.

Operation Board-------------------------------------------------------------------------------------

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V. Cleaning and Maintenance Instructions -------------------------------------------------------------

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A. Daily Maintenance -------------------------------------------------------------------------------------

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B. Self-Cleaning --------------------------------------------------------------------------------------------

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C. Weekly Maintenance ----------------------------------------------------------------------------------

66

1.

Heater--------------------------------------------------------------------------------------------------

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2.

Exterior ------------------------------------------------------------------------------------------------

66

3.

Wash Compartment --------------------------------------------------------------------------------

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D. Monthly Maintenance ---------------------------------------------------------------------------------

66

1.

Power Switch (Ground Fault Circuit Interrupter) --------------------------------------------

66

2.

Water Supply Line ----------------------------------------------------------------------------------

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E. Descaling (As Required) -----------------------------------------------------------------------------

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F. Shutdown -------------------------------------------------------------------------------------------------

68

G. Long Storage, Relocation, Disposal, Transfer --------------------------------------------------

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VI. Operating Instructions-----------------------------------------------------------------------------------

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VII. Technical Information -----------------------------------------------------------------------------------

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A. Water Circuit---------------------------------------------------------------------------------------------

71

B. Wiring Diagram -----------------------------------------------------------------------------------------

72

1. Auxiliary Code U-1, U-2, U-3, V-0, A-0 --------------------------------------------------------

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2. Auxiliary Code A-1 and Later---------------------------------------------------------------------

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Contents Model JWE-620UA-6B Hoshizaki AMERICA, INC Contents Page Important Safety Information Specifications Specification Sheet DisplayNameplate Rating Dimensions/Connections II. General Information A. Construction DishwasherInternal Booster Tank Control Box Auxiliary Code U-1, U-2, U-3, V-0, A-0Auxiliary Code A-1 and Later Auto Fill Cycle Sequence of OperationAuto Fill lamp flashing and RINSE, STANDARD, or Long lamp on Wash Cycle STANDBY/CLEANING Button Start Rinse CycleRinse lamp flashing DrainSequence of Operation Flow Chart Auxiliary Code A-1 and Later Control Board and Operation Board Control Board LocationControl Board Layout CN5Control Board Diagram CN9X10 Error Codes Mode LampsReady Lamp Auto Fill LampMode Button STANDBY/CLEANING ButtonService Menu Access Standby LampService Menu Chart Auxiliary Code U-1, U-2, U-3, V-0, A-0 DefaultService Menu Chart Auxiliary Code A-1 and Later Temperature Display Error Codes Internal Booster Tank Energy Saving ModeBuzzer Special ModesConsecutive Rinse Mode Continuous Wash ModeAlert Function Auxiliary Code A-1 and Later OFF Diagnostic Procedure III. Service DiagnosisSwitch Open/Closed Display Mode Page Error Codes Error Code TableError Code Log Error Code Details Auto Fill Error A1Internal Booster Tank Auto Fill Error A2 Wash Tank Water Level Error A3 Defective Replace Control Board Repair or replace Replace Wash Tank Thermistor Error H1, H2 Internal Booster Tank Thermistor Error H3, H4 ROM/RAM Error H5 Eeprom Error H6Phase Reversal Error H7 Service Flow Charts Unit Will Not StartPage Dishes Not Clean Page Inadequate Rinse Dishwasher Will Not Start When Door Closed No or Inadequate Detergent/Rinse Aid Supply Wash Tank Water BoilsWash Tank Water Not Draining Float Switch Check Float Switch Check and CleaningFloat Switch Cleaning Thermistor Check Accessing the Control Box IV. Removal and Replacement of ComponentsRemoval of Panels Page Removal and Replacement of Internal Booster Tank Removal and Replacement of Wash Pump Motor Removal and Replacement of Rinse Pump Motor Removal and Replacement of Handle Removal and Replacement of Door Removal and Replacement of Spring Unit Removal and Replacement of SpringAdjustment of Door Opening/Closing Force Removal and Replacement of Flush Pipe Packing Installation Instructions Removal and Replacement of Thermistor Control Board Removal and Replacement of Control Board or Operation BoardOperation Board Page Cleaning and Maintenance Instructions Daily Maintenance Pump Filter Water Level Sensor Location Front Self-Cleaning Weekly Maintenance Monthly InspectionDescaling As Required Shutdown Long Storage, Relocation, Disposal, Transfer VI. Operating Instructions VII. Technical Information Water Circuit Wiring Diagram Auxiliary Code U-1, U-2, U-3, V-0, A-0Auxiliary Code A-1 and Later