Hoshizaki JWE-620UA-6B service manual Control Board Diagram, CN9

Page 21

3. Control Board Diagram

a) Auxiliary Code U-1, U-2, U-3, V-0, A-0











200V from Transformer

Transformer

11V 7.7V



 

 

 

1 (CN1) 4

[Communication]

1

 

Operation Panel

2

 

3

 

Board

 

4

 

(Shielded Wire)

 

5

 

 

 

Wash Tank Thermistor

(CN5)

 

 

1

 

Internal Booster Tank Thermistor

2

 

3

 

 

 

 

4

 

 

(CN7)

 

 

1

 

 

2

XA

 

3

Buzzer Output

Connector

1

 

(CN11)

 

 

2

 

 

(CN10)

 

JWE-620UA-6B

1

 

Pins 1-4 shorted: 3 phase control

 

 

Pins 1-4 open: Booster Tank control

4

 

 

(CN6)

 

 

1

 

 

2

XH

 

3

 

Connector

 

(CN12)

 

 

 

1

 

2

(CN13)

1 (CN2) 6

[External

Relay]

 

X1

1

 

 

 

 

MC3

Booster Tank Heater

 

X2

 

 

3

 

 

 

 

MC1

Wash Tank Heater

 

 

 

 

X3

5

 

 

 

 

X1

Rinse Pump

 

 

 

 

X4

7

 

 

 

 

MC2

Wash Pump

 

 

 

 

X5

(CN3)

 

 

 

 

1

 

Water Valve

 

 

 

 

 

X6

 

 

 

 

X7

 

 

 

 

 

(CN4)

 

 

 

1

 

Wash Tank Electrode

 

2

 

(Water Level Sensor)

 

 

 

 

5

 

Door Switch

XA

6

 

 

Connector

 

(CN9)

 

Internal Booster Tank Water Level Float Switch

 

 

 

1

 

 

2

 

Internal Booster Tank Backup Water Level Float Switch

 

 

 

3

 

 

 

4

 

 

 

5

 

 

 

6

 

 

 

7

 

 

 

8

 

Phase Reversal Input

 

9

 

 

10

 

 

 

 

(CN8)

 

 

*1 Connectors CN 1 - 4 are VH Connectors

16

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Contents Model JWE-620UA-6B Hoshizaki AMERICA, INC Contents Page Important Safety Information Display Specifications Specification SheetNameplate Rating Dimensions/Connections Dishwasher II. General Information A. ConstructionInternal Booster Tank Auxiliary Code U-1, U-2, U-3, V-0, A-0 Control BoxAuxiliary Code A-1 and Later Sequence of Operation Auto Fill CycleAuto Fill lamp flashing and RINSE, STANDARD, or Long lamp on Wash Cycle Rinse Cycle STANDBY/CLEANING Button StartDrain Rinse lamp flashingSequence of Operation Flow Chart Auxiliary Code A-1 and Later Control Board Location Control Board and Operation BoardCN5 Control Board LayoutCN9 Control Board DiagramX10 Mode Lamps Error CodesReady Lamp Auto Fill LampSTANDBY/CLEANING Button Mode ButtonService Menu Access Standby LampDefault Service Menu Chart Auxiliary Code U-1, U-2, U-3, V-0, A-0Service Menu Chart Auxiliary Code A-1 and Later Temperature Display Internal Booster Tank Energy Saving Mode Error CodesBuzzer Special ModesContinuous Wash Mode Consecutive Rinse ModeAlert Function Auxiliary Code A-1 and Later OFF III. Service Diagnosis Diagnostic ProcedureSwitch Open/Closed Display Mode Page Error Code Table Error CodesError Code Log Auto Fill Error A1 Error Code DetailsInternal 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 Eeprom Error H6 ROM/RAM Error H5Phase Reversal Error H7 Unit Will Not Start Service Flow ChartsPage Dishes Not Clean Page Inadequate Rinse Dishwasher Will Not Start When Door Closed Wash Tank Water Boils No or Inadequate Detergent/Rinse Aid SupplyWash Tank Water Not Draining Float Switch Check and Cleaning Float Switch CheckFloat Switch Cleaning Thermistor Check IV. Removal and Replacement of Components Accessing the Control BoxRemoval 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 Removal and Replacement of Spring UnitAdjustment of Door Opening/Closing Force Removal and Replacement of Flush Pipe Packing Installation Instructions Removal and Replacement of Thermistor Removal and Replacement of Control Board or Operation Board Control BoardOperation Board Page Cleaning and Maintenance Instructions Daily Maintenance Pump Filter Water Level Sensor Location Front Self-Cleaning Monthly Inspection Weekly MaintenanceDescaling As Required Shutdown Long Storage, Relocation, Disposal, Transfer VI. Operating Instructions VII. Technical Information Water Circuit Auxiliary Code U-1, U-2, U-3, V-0, A-0 Wiring DiagramAuxiliary Code A-1 and Later
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