Hoshizaki JWE-620UA-6B service manual Error Code Log

Page 34

Error

Problem

Operation

Reset

Code

 

Internal Booster Tank Thermistor Error

Normal

After replacing failed component,

 

(open)

(internal

alarm resets.

H4

 

booster tank

 

 

Thermistor senses abnormal temperature

heaters off)

 

 

(at (heater off) or below -6°F (-21°C)).

 

 

H5

ROM/RAM Error

Unit stops

After replacing control board, alarm

Control board ROM/RAM fails.

 

resets.

 

 

 

 

EEPROM Error

Unit stops

After replacing control board, alarm

H6

EEPROM fails.

 

resets.

 

 

 

 

Phase Reversal Error

Unit stops

After correcting the connection by

H7

 

 

swapping two of three wires at the

Power supply phase is reversed.

 

power switch (GFCI) connection,

 

 

 

 

 

alarm resets.

2. Error Code Log

Use the "ON/OFF" button to turn off the unit. Press and hold the "MODE" button, then press the "ON/OFF" button. "01" should appear on the display. Use the down arrow button to scroll to service menu items 21 through 25 (Auxiliary Code U-1, U-2, U-3, V-0, A-0) or 26 through 30 (Auxiliary Code A-1 and later). 21 (Auxiliary Code U-1, U-2, U-3, V-0, A-0) or 26 (Auxiliary Code A-1 and later) is the most recent error. Press the "MODE" button to view the selected service menu item. Press the "MODE" button once again to return to the main service menu list. If no errors exist in the log, "--" is displayed.

Press the "STANDBY/CLEANING" button to exit the service menu. The display goes blank.

To erase the log, press and hold the up and down buttons for 3 seconds with one of the error codes displayed. The unit beeps once and the entire log clears.

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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 Ready Lamp Error CodesMode Lamps Auto Fill LampService Menu Access Mode ButtonSTANDBY/CLEANING Button 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 Buzzer Error CodesInternal Booster Tank Energy Saving Mode 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
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