NO. J002-794 ISSUED APR. 1 REVISED SEP
MODEL JWE-2400CUA-L-25B JWE-2400CUA-R-25B
DISHWASHER
HOSHIZAKI
Complete and detailed explanation of the problem
HOSHIZAKI AMERICA, INC 618 Highway 74 South Peachtree City, GA
Attn Hoshizaki Technical Support Department
Phone 1-800-233-1940 Technical Support 770 487-2331 Fax
CONTENTS
III. Service Diagnosis
A. Diagnostic Procedure
B. Error Codes
Error Code Table
Important Safety Information
Indicates a hazardous situation which could result in death or
serious injury
Indicates a situation which could result in damage to the unit or
NUMBER OF LARGE DISHES / RACK
Thermistor Control 182ºF83ºC-185ºF 85ºC
Thermistor Control 163ºF73㩷C - 168㩷㪝76C
DISHWASHER SIDE
B. Nameplate Rating
For certification marks, see the nameplate on the dishwasher
C. Dimensions/Connections
1. JWE-2400CUA-L-25B
2. JWE-2400CUA-R-25B
Units mm in
II. General Information A. Construction
1. Dishwasher
Wash Spray Arm stationary Wash Start Switch Service Panel Switch
Vertically Sliding Service Panel Rack Flow Water Level Sensor
2. Booster Tank
Water Level Float Switch FS1 downward end
Backup Water Level Float Switch FS2 upward end
Water Level Safety Float Switch FS3 downward end Thermistor TH2
X11 Service Panel Switch
X12 Phase Reversal Relay
X14 Conveyor Drive Signal
Voltage Tap Switch
B. Functions
C. Sequence of Operation
1. Increasing Rinse Water Flow Rate
1. Auto Fill Cycle
2. Ready Cycle Unit Inactive
READY lamp and RINSE TEMP. or WASH TEMP. lamp on
3. Wash Cycle/Rinse Cycle
WASH lamp and RINSE TEMP. or WASH TEMP. lamp on
4. Table Limit Switch
5. Emergency Stop Button
6. Drain
Flow Chart
Dishwasher Sequence Flow Chart JWE-2400CUA-25B
D. Sequence of Operation
Cycle Steps
Chart
E. Timing
1. Auto Fill
Cycle
2. Wash Cycle/Rinse Cycle
Delay Time 0.5 sec
Extended Wash Cycle Time *30 sec
Extended Rinse Cycle Time *15 sec
F. Control Board and Operation Board
1. Control Board Location
2. Control Board Layout
3. Control Board Diagram
200VAC from Transformer
5. Features
b Service Menu and Error Log
c Error Codes
6. Controls, Adjustments, and Lamps
i Conveyor Speed Switch
7. Service Menu and Error Log
a Service Menu Access
c READY Lamp
b Service Menu Chart
Setting Range
Item and Details
Display
8. Temperature Display
9. Error Codes
10. Buzzer
b Low Water Temperature Lock Function
11. Operation Time Display
12. Special Modes
a Continuous Wash Mode
Alert Function Setting Flow
Service Menu
factory default
Set service menus 17 to
III. Service Diagnosis
A. Diagnostic Procedure
Switch Open/Closed Display Mode
1 Use the “ON/OFF” button on the operation panel to turn off the unit
2 Pull out the overflow pipe to drain the wash tank
3 Drain the booster tank through the drain hose
4 Replace the overflow pipe and drain hose in their correct positions
B. Error Codes
1. Error Code Table
Error
Problem
2. Error Code Log
3. Error Code Details
a Auto Fill Error A1
Continue Booster Tank Water Level Float Switch
Check and clean. See “III.D. Float Switch Check and Cleaning.”
Sticking with float in “ON” position
Defective with internal contacts in “ON” position
b Booster Tank Auto Fill Error A2
c Wash Tank Water Level Error A3
Page
Page
f Wash Tank Thermistor Error H1, H2
H 1 / H
g Booster Tank Thermistor Error H3, H4
H 3 / H
h ROM/RAM Error H5
i EEPROM Error H6
j Conveyor Overload or Table Limit Error 1 L1
k Conveyor Overload or Table Limit Error 2 L2
l Booster Tank Error b1
m Booster Tank Water Level Safety Error b2
C. Service Flow Charts
1. Unit Will Not Start
Unit will not start Problem Main Power Supply Emergency Stop Button
ON/OFF Button Power Failure No Water Supply Service Panel
Continue Transformer Wiring to Control Board Control Board
Open coil winding Loose connections or open In alarm Defective
See “III.B. Error Codes.” Replace
Replace
2. Dishes Not Clean
Dishes not clean Problem Low Wash Pump Output Wash Spray Arms Filter
Remedy Clean Remove cause Clean tank filter
Stop using neutral cleaner Replace Clean Set in position
Temperature too low Temperature will not rise Control output error
Refill or adjust detergent feeder Use specified detergent only
Raise setting or see “Heater Not Energized” Reset overheat thermostat
Check input/output and repair or replace Replace Reset manually
3. Inadequate Rinse
Inadequate rinse Problem Low Rinse Pump Output Rinse Spray Arms
Low pump output Improperly loaded Temperature too low Too short
Remedy Clean Clean Remove cause Replace Clean Set in position
4. Dishwasher Will Not Start Wash/Rinse Cycle
Dishwasher will not start wash/rinse cycle
5. No or Inadequate Detergent/Rinse Aid Supply
6. Wash Tank Water Boils
No or inadequate detergent/rinse aid supply Problem
Supply volume too low
7. Wash Tank Water Not Draining
Wash tank water not draining Problem Drain Hose Drain Pipe
Overflow Pipe
Possible Cause Clogged Pinched Raised Clogged
D. Float Switch Check and Cleaning
1. Float Switch Check
2. Float Switch Cleaning
E. Thermistor Check
IV. Removal and Replacement of Components
B. Removal and Replacement of Wash Pump Motors
A. Removal of Panels
C. Removal and Replacement of Rinse Pump Motor
6 Disconnect the rinse pump motor wiring at the closed end connectors
JWE-2400CUA-L-25B View without rinse pump motor
Band
Booster Tank
Discharge Pipe
D. Removal and Replacement of Gear Motor
Bracket Wash Tank Flinger Coupling Hexagon Socket Set Screw Nut
Gear Motor Bracket Bolt
E. Removal and Replacement of Conveyor
F. Removal and Replacement of Crankshaft
G. Removal and Replacement of Control Box
H. Removal and Replacement of Thermistor
I. Removal and Replacement of Control Board or Operation Board
1. Control Board
2. Operation Board
Connector Tube B Operation Board Tube A
Stay - OP Joint - Operation B Operation Panel B Cable - Operation
J. Removal and Replacement of Heater
K. Removal and Replacement of Float Switch
L. Removal and Replacement of Thermostat
V. Cleaning and Maintenance Instructions A. Daily Maintenance
7 Remove the separators
14 Replace the separators in their correct positions
Hook
Rack Rail Ring
21 Install the curtain L in the wash compartment
B. Weekly Maintenance
C. Monthly Inspection
1. Heater
2. Exterior
D. Descaling As Required
E. Shutdown
2 Turn off the water heater 3 Turn off the gas and water supplies
F. Long Storage, Relocation, Disposal, Transfer
VI. Operating Instructions
VII. Technical Information A. Water Circuit
B. Wiring Diagram
![Sheathed Heater [H7 - 15]](/images/new-backgrounds/64384/6438423xi2.webp){kind=small}
Overflow Pipe
Water Level Safety Float Switch [FS3]
Thermistor [TH2]