Manuals / Hoshizaki / Kitchen Appliance / Dishwasher

Hoshizaki JWE-2400CUA-R-25B, JWE-24000CUA-L-25B service manual Control Board Layout

Models: JWE-2400CUA-R-25B JWE-24000CUA-L-25B

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2. Control Board Layout

2. Control Board Layout

Inputs and outputs are laid out on the control board as illustrated below.

Signal Input XA Connector (6P)

Buzzer Output XA Connector (2P)

Signal Input XA Connector (10P)

Power Input VH Connector (4P)

Thermistor Signal Input

XA Connector (4P)

										CN2
		1	10	1	6	1	2			1
		1	10	1	6	1	2	1	4	1	Power Input VH Connector (6P)
								1	4
			CN8		CN9	CN10
		4	CN8		CN9	CN10			CN1
		4				High
			CN7			High				6
		1	CN7						X1	6

						Low	VR1
						Low	VR1		X2	1
						Buzzer Volume				1
		8				Buzzer Volume					Output VH Connector (7P)
		8							X3		Output VH Connector (7P)
			CN6						X3
			CN6						X4
										7
		1

									X5
										CN3
		5								CN3
		5	CN5	CN11			CN12		X6	1	Output VH Connector (5P)
		1	CN5	CN11		CN13			X6	1
		1		3	1	CN13			X7
						2 1	3	1
										5
										5
										CN4
										CN4

		Operation Board XA Connector (5P)						XH Connector (3P): not in use
		Operation Board XA Connector (5P)

						XH Connector (2P): not in use

					Booster Tank Water Level Safety
					Signal Input XA Connector (3P)

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Hoshizaki JWE-2400CUA-R-25B, JWE-24000CUA-L-25B service manual Control Board Layout

Contents

MODEL JWE-2400CUA-L-25B JWE-2400CUA-R-25B NO. J002-794 ISSUED APR. 1 REVISED SEPDISHWASHER HOSHIZAKIHOSHIZAKI AMERICA, INC 618 Highway 74 South Peachtree City, GA Complete and detailed explanation of the problemAttn Hoshizaki Technical Support Department Phone 1-800-233-1940 Technical Support 770 487-2331 FaxCONTENTS A. Diagnostic Procedure III. Service DiagnosisB. Error Codes Error Code TableIndicates a hazardous situation which could result in death or Important Safety Informationserious injury Indicates a situation which could result in damage to the unit orNUMBER OF LARGE DISHES / RACK Thermistor Control 182ºF83ºC-185ºF 85ºCThermistor Control 163ºF73㩷C - 168㩷㪝76C DISHWASHER SIDE For certiﬁcation marks, see the nameplate on the dishwasher B. Nameplate Rating1. JWE-2400CUA-L-25B C. Dimensions/ConnectionsUnits mm in 2. JWE-2400CUA-R-25B1. Dishwasher II. General Information A. ConstructionWash Spray Arm stationary Wash Start Switch Service Panel Switch Vertically Sliding Service Panel Rack Flow Water Level SensorWater Level Float Switch FS1 downward end 2. Booster TankBackup Water Level Float Switch FS2 upward end Water Level Safety Float Switch FS3 downward end Thermistor TH2X12 Phase Reversal Relay X11 Service Panel SwitchX14 Conveyor Drive Signal Voltage Tap SwitchC. Sequence of Operation B. Functions1. Increasing Rinse Water Flow Rate 1. Auto Fill CycleREADY lamp and RINSE TEMP. or WASH TEMP. lamp on 2. Ready Cycle Unit Inactive3. Wash Cycle/Rinse Cycle WASH lamp and RINSE TEMP. or WASH TEMP. lamp on4. Table Limit Switch 5. Emergency Stop Button6. Drain Dishwasher Sequence Flow Chart JWE-2400CUA-25B Flow ChartD. Sequence of Operation Cycle StepsE. Timing Chart1. Auto Fill CycleDelay Time 0.5 sec 2. Wash Cycle/Rinse CycleExtended Wash Cycle Time *30 sec Extended Rinse Cycle Time *15 sec1. Control Board Location F. Control Board and Operation Board2. Control Board Layout 200VAC from Transformer 3. Control Board Diagramb Service Menu and Error Log 5. Featuresc Error Codes 6. Controls, Adjustments, and Lamps7. Service Menu and Error Log i Conveyor Speed Switcha Service Menu Access c READY LampSetting Range b Service Menu ChartItem and Details Display8. Temperature Display 9. Error Codes10. Buzzer 11. Operation Time Display b Low Water Temperature Lock Function12. Special Modes a Continuous Wash ModeService Menu Alert Function Setting Flowfactory default Set service menus 17 toIII. Service Diagnosis A. Diagnostic ProcedureSwitch Open/Closed Display Mode 2 Pull out the overﬂow pipe to drain the wash tank 1 Use the “ON/OFF” button on the operation panel to turn off the unit3 Drain the booster tank through the drain hose 4 Replace the overﬂow pipe and drain hose in their correct positions1. Error Code Table B. Error CodesError Problem2. Error Code Log a Auto Fill Error A1 3. Error Code DetailsCheck and clean. See “III.D. Float Switch Check and Cleaning.” Continue Booster Tank Water Level Float SwitchSticking with float in “ON” position Defective with internal contacts in “ON” positionb Booster Tank Auto Fill Error A2 c Wash Tank Water Level Error A3 Page Page H 1 / H f Wash Tank Thermistor Error H1, H2H 3 / H g Booster Tank Thermistor Error H3, H4i EEPROM Error H6 h ROM/RAM Error H5j 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 1. Unit Will Not Start C. Service Flow ChartsUnit will not start Problem Main Power Supply Emergency Stop Button ON/OFF Button Power Failure No Water Supply Service PanelOpen coil winding Loose connections or open In alarm Defective Continue Transformer Wiring to Control Board Control BoardSee “III.B. Error Codes.” Replace ReplaceDishes not clean Problem Low Wash Pump Output Wash Spray Arms Filter 2. Dishes Not CleanRemedy Clean Remove cause Clean tank filter Stop using neutral cleaner Replace Clean Set in positionRefill or adjust detergent feeder Use specified detergent only Temperature too low Temperature will not rise Control output errorRaise setting or see “Heater Not Energized” Reset overheat thermostat Check input/output and repair or replace Replace Reset manuallyInadequate rinse Problem Low Rinse Pump Output Rinse Spray Arms 3. Inadequate RinseLow pump output Improperly loaded Temperature too low Too short Remedy Clean Clean Remove cause Replace Clean Set in positionDishwasher will not start wash/rinse cycle 4. Dishwasher Will Not Start Wash/Rinse Cycle6. Wash Tank Water Boils 5. No or Inadequate Detergent/Rinse Aid SupplyNo or inadequate detergent/rinse aid supply Problem Supply volume too lowWash tank water not draining Problem Drain Hose Drain Pipe 7. Wash Tank Water Not DrainingOverflow Pipe Possible Cause Clogged Pinched Raised CloggedD. Float Switch Check and Cleaning 1. Float Switch Check2. Float Switch Cleaning E. Thermistor Check IV. Removal and Replacement of Components B. Removal and Replacement of Wash Pump MotorsA. Removal of Panels C. Removal and Replacement of Rinse Pump Motor 6 Disconnect the rinse pump motor wiring at the closed end connectors Band JWE-2400CUA-L-25B View without rinse pump motorBooster Tank Discharge PipeD. Removal and Replacement of Gear Motor Bracket Wash Tank Flinger Coupling Hexagon Socket Set Screw NutGear Motor Bracket Bolt E. Removal and Replacement of Conveyor F. Removal and Replacement of Crankshaft H. Removal and Replacement of Thermistor G. Removal and Replacement of Control Box1. Control Board I. Removal and Replacement of Control Board or Operation Board2. Operation Board Connector Tube B Operation Board Tube AStay - 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 Rack Rail Ring Hook21 Install the curtain L in the wash compartment C. Monthly Inspection B. Weekly Maintenance1. Heater 2. ExteriorE. Shutdown D. Descaling As Required2 Turn off the water heater 3 Turn off the gas and water supplies VI. Operating Instructions F. Long Storage, Relocation, Disposal, TransferVII. Technical Information A. Water Circuit B. Wiring Diagram