Moyer Diebel 201HT Installation & Operation Manual
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Moyer Diebel 201HT Installation & Operation Manual

Undercounter dishwashers
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Installation/Operation Manual with Service Replace
201HT
501HT
www.moyerdiebellimited.com
3765 Champion Boulevard
Winston-Salem, NC 27105
336/661-1992 Fax: 336/661-1660
Toll-free: 800.858.4477
401HT
Issue Date: 10.4.10
Manual P/N
For machines beginning with S/N W11948 and above
2674 N. Service Road, Jordan Station
Ontario, Canada L0R 1S0
905/562-4195 Fax: 905/562-4618
Toll-free: 800.263.5798
ment Parts
Undercounter
Dishwashers
(with pumped final rinse)
Models:
201HT
High temperature w/booster
201HTN
High temperature w/o booster
201LT
Low temperature chemical sanitizing
401HT
High temperature w/booster
401HTN
High temperature w/o booster
501HT
High temperature w/booster
501HTN
High temperature w/o booster
501LT
Low temperature chemical sanitizing
Dishwasher serial no.
0512240 rev. I
Printed in USA

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Summary of Contents for Moyer Diebel 201HT

  • Page 1 Parts Installation/Operation Manual with Service Replace Undercounter Dishwashers (with pumped final rinse) Models: 201HT High temperature w/booster 201HTN High temperature w/o booster 201HT 201LT Low temperature chemical sanitizing 401HT High temperature w/booster 401HTN High temperature w/o booster 501HT High temperature w/booster...
  • Page 2 The USGBC and the CaGBC Member Logos are trademarks owned by the U.S. Green Building Council and The Canadian Green Building Council, respectively, and are used by permission. The logos signify only that Moyer Diebel is a USGBC member and a CaGBC member;...
  • Page 3 USE CANADIAN WARRANTY CARD IN CANADA AND USA WARRANTY CARD IN THE UNITED STATES. NO POSTAGE NECESSARY IF MAILED IN THE UNITED STATES BUSINESS REPLY MAIL FIRST-CLASS MAIL PERMIT NO. 2101 WINSTON-SALEM, NC POSTAGE WILL BE PAID BY ADDRESSEE MOYER DIEBEL PO BOX 4183 WINSTON-SALEM, NC 27119-0981...
  • Page 4 WARRANTY REGISTRATION CARD Serial # Model Date of Installation: Company Name: Address: (Street) State or Province Zip Code Telephone #: ( Contact: Installation Company: Address: Telephone #: Contact: This Card Must Be Returned to Validate Machine Warranty: IMPORTANT IMPORTANT WARRANTY REGISTRATION CARD Model Serial # Date of Installation:...

  • Page 5: Revision History

    Revision History Revision History • The Revision History can contain part number changes, new instructions, or information that was not available at print time. • We reserve the right to make changes to these instructions without notice and without incurring any liability by making the changes.. • Equipment owners may request a revised manual, at no charge, by calling 1 (800) 858-4477 in the USA or by calling 1 (800) 263-5798 in Canada. Revision Revised Serial Number Revision Date Pages Effectivity D escription 9.15.06 All W11948 Released first edition 3.22.07 W11948 Revised Schematic Solid State Timer Service 11.26.07 iii, 3-6, 28-29, W14326 Installation, schematics 30-31, 32-33, MTB, Booster interlock 61-66 2KW wash tank Heater 12.1.07 32-33 W14478 Booster control thermostat P/N changed from 109069 to 0512108 6.10.09...

  • Page 6: Limited Warranty

    EXTENT REFLECTED ABOVE. MOYER DIEBEL MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUD- ING, BUT NOT LIMITED, TO ANY WARRANTY OF MERCHANTABILITY, OR FITNESS OF PURPOSE. MOYER DIEBEL SHALL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES. THE REMEDIES SET OUT ABOVE ARE...

  • Page 7: Table Of Contents

    Table of Contents Table of Contents Model 201, 401, 501 Undercounter Dishwashers Revision History ......................i Limited Warranty ......................ii Model Descriptions ......................iv ....................Installation Receiving ..............1 Electrical Connections ..........2 Water Connections .............6 Drain Connections ............7 ..................Initial Start-up Booster Fill Switch ............ 8 Check List .............. 9 Chemical Dispensing Pumps ........10 Priming ......12 Adjustments.......13 Operation ........................ 14 Normal Wash Mode ............14 Scrub Mode (extended wash) ........15 Rinse Sentry Mode .............15 Drain Operation ............16 ................ Cleaning and Maintenance Cleaning .

  • Page 8: Model Descriptions

    Model Description Model Description 201-HT, 401-HT, and 501-HT Models Pumped final rinse high temperature sanitizing dishwasher with built-in 40°F rise stainless steel electric booster. Single Phase to Three Phase Field Conversion. 201-HTN, 401-HTN, and 501-HTN Models Pumped final rinse high temperature sanitizing dishwasher without built-in 40°F rise stainless steel electric booster. 201-LT, 501-LT Model Pumped final rinse low temperature chemical sanitizing dishwasher with 3 built-in chemical dispensing pumps. Optional Equipment (consult factory) 70°F/39°C rise built-in booster heater 70°F/39°C rise booster heater element-P/N 111233, Gasket- P/N 109985 1-RDT Right-hand sink - P/N 403562 1-RDT Left-hand sink - P/N 403561 17" Stand - P/N 0708757 17" Storage cabinet - P/N 0703593 6" Stand - P/N 0712393 Peg dish rack - P/N 101285 Flat-bottom dish rack - P/N 101273 Drain water tempering kit - 0712382-1...

  • Page 9: Installation

    Installation Receiving NOTE: The installation of your dishwasher must be performed by qualified service personnel. Problems due to improper installation are not covered by the Warranty. Inspect the outside of the dishwasher carton for signs of damage. Remove the carton and inspect the dishwasher for damage. Check for any accessories that may have shipped with your dishwasher.

  • Page 10: Electrical Connections

    Installation Electrical Connections For Model 201HT, 401HT, and 501HT machines beginning with S/N 14236 and above 1. Refer to the connection diagrams below. 2. Models 201HTN /LT, 401HTN, 501HTN /LT are equipped with a 4 ft. power cord/plug and only require a 115VAC,15A receptacle.
  • Page 11 115VAC 4 ft. power cord w/plug supplied 115VAC Model 201HTN / LT, 401HTN, 501HTN /LT Model 201HT, 401HT, 501HT Prior to S/N 14236 All S/N's Note: Models 201 HTN, 201LT, 401HTN, 501HTN, 501LT are equipped with a 4 ft. power cord and plug.
  • Page 12 Installation Electrical Connections (continued) For Models 201HT, 401HT, and 501HT beginning with S/N 14236 and above WARNING: Electrocution or serious injury may result when working on an energized circuit. Disconnect power at the main breaker or service disconnect switch before working on the circuit.
  • Page 13 1 PH Booter Heater/Wash Tank Heater Interlock Circuit For Model 201HT, 401HT, 501HT dishwashers beginning with S/N 14236 and above. The booster heater/wash tank heater interlock circuit removes power from the wash tank heater whenever the booster heater contactor energizes. The illustration below shows how the booster heater contactor is wired.

  • Page 14: Water Connections

    All models have a built-in flow control. The incoming hot water supply pressure must be between 25-95 psi/173-655 kPa. For Models 201HT, 401HT, and 501HT: For the 40°F/ 22°C rise booster, the hot water supply must provide a minimum of 140°F/60°C, measured at the dishwasher.

  • Page 15: Drain Connections

    Installation Drain Connections ATTENTION Do not connect the drain hose to a disposer. The dishwasher will not drain correctly. NOTE The dishwasher drains in 8 seconds and drain water exits the hose with considerable force. All models have a 6ft. 5/8" I.D. drain hose. The maximum drain height connection must not exceed 3 ft.[9 m].

  • Page 16: Initial Start-Up

    Initial Start-up Filling the Booster For Models 501HT, 401HT, and 201HT Note: The dishwasher contains a built-in booster heater that was drained prior to shipment and must be filled with water before operating the dishwasher. Booster Fill Switch The booster heater is filled using the Booster Fill Switch.

  • Page 17: Check List

    Initial Start-up Check List All Models Remove any protective film from dishwasher. Check the interior for foreign material. Make sure that the dishwasher is permanently located. Make sure that all utility connections are complete. Make sure that the flexible drain hose and the hot water fill hose are not kinked. Make sure that the chemical supply containers are full and that the chemical pick-up tubes are installed in the proper containers.

  • Page 18: Chemical Dispensing Pumps

    Chemical Dispensing Pumps Models 501HT, 501HTN, 401HT, 401HTN, 201HT, 201HTN Models 201HT, 201HTN, 401HT, 401HTN, 501HT, and 501HTN: are equipped with a built-in detergent dispensing pump and a rinse-aid dispensing pump. The pumps are located behind the lower front access panel.
  • Page 19 Initial Start-up Chemical Dispensing Pumps Models 501LT and 201LT ATTENTION (For LT Models Only), 5.25% sodium hypochlorite (chlorine bleach) must be used as a sanitizing agent to provide a minimum concentration of 50 ppm in the final rinse. The 50 ppm concentration must be checked using chlorine test strips to make sure that the proper concentration is maintained Models 501LT and 201LT are equipped with a built-in detergent, rinse-aid, and sanitizer dispensing pumps...

  • Page 20: Priming

    Initial Start-up Chemical Dispensers Priming the Chemical Dispensing Pumps Models 501HT, 501HTN, 401HT, 401HTN, 201HT, 201HTN Make sure the chemical containers are full and the correct pick-up tubes are in the containers. Turn the dishwasher power switch ON. The switch will illuminate and the dishwasher will fill with water.

  • Page 21: Adjustments

    Initial Start-up Chemical Dispensers All Models Chemical Dispensing Pump Speed and Tank Fill Adjustments Note: The chemical dispensing pump speeds are not set at the factory and variations in the type of chemicals supplied by the chemical supplier usually require that the supplier make final adjustments for the products supplied.

  • Page 22: Operation

    Operation Normal Wash Cycle 501HT Control Panel Wash Temperature Prime Switch In-cycle Light Digital Display Scrub Final Rinse Temperature In-cycle Light ON/OFF Digital Display Power Switch Scrub Start Push button Push button Push the POWER switch up to the ON position. The switch illuminates, water enters the wash compartment.

  • Page 23: Scrub Mode (Extended Wash)

    Operation Normal Wash Cycle (continued) Check the rinse cycle temperature gauge during the final rinse cycle to ensure the final rinse temperature ranges between 180-195°F/82-91°C for high temperature models. NOTE: Models 201 and Models 401, (prior to S/N W10012006 for Model 401), have a Model 201 Model 401HT single temperature gauge to indicate the...

  • Page 24: Drain Operation

    Operation Dishwasher Drain Operation Push the dishwasher POWER switch up to the ON position. The POWER switch illuminates and the machine fills with water. Press and hold the green START button for 1-second. (Silver button for Model 501HT). Release the START switch. The dishwasher starts and the green cycle light illuminates.

  • Page 25: Cleaning And Maintenance

    Cleaning Cleaning The best preventative maintenance is keeping the dishwasher as clean as possible during regular use. A regular cleaning schedule will increase the life of the dishwasher and ensure the best results. CAUTION: Damage to the unit or improper operation may occur if components are not flushed and cleaned on a regularly scheduled basis.
  • Page 26 Cleaning Cleaning Daily-End of the Day (continued) Reinstall the scrap screen. Wipe the exterior of the dishwasher clean using a soft cloth and mild detergent. Leave the dishwasher door open overnight to allow the inside to dry. Clean Wash Nozzles and Bearings...

  • Page 27: Deliming

    Cleaning Cleaning After Meal Period or Every 8 Hours Clean the scrap screen after each meal period and more frequently if necessary in order to keep the scrap screen from becoming clogged. Deliming Your dishwasher should be delimed regularly. The frequency will depend on the mineral content of your water.

  • Page 28: Maintenance

    Maintenance Maintenance Schedule The best maintenance you can perform is to keep your dishwasher clean. Before and During Operation Check the temperature gauges during operation to ensure the proper temperatures are maintained. Check the chemical supply container level and replenish if necessary. Weekly Maintenance 1.

  • Page 29: Troubleshooting

    Troubleshooting Condition Cause Solution Dishwasher will not run. Door not closed. Close door completely. Main power OFF. Check breaker on panel. Dishwasher OFF. Turn dishwasher ON. Low or no water. Main water supply off. Open supply valve. Solenoid valve defective. Install repair kit or replace.
  • Page 30 Blank Page This Page Intentionally Left Blank...

  • Page 31: Service Replacement Parts

    Main Terminal Block, Timer Board - All Models .......... Rinse-Aid/Sanitizer Chemical Dispensing Pump - All Models ....Detergent Chemical Dispensing Pump - All Models ........Control Panel (201HT/HTN, 201LT, 401HT/HTN, 501HTN, 501LT) ... Control Panel with Digital Display (501HT) ..........Door Assy - All Models................

  • Page 32: Wash Pump/Motor Assy - All Models

    Wash Pump/Motor Assy - All Models...
  • Page 33 All Models - Wash Pump/Motor Assy Item Part Description Qty. 0512340 SCREW, M4.0x0.70 30mm PHILIPS PAN HEAD 0512341 IMPELLER HOUSING COVER 114144 NUT, M6 (left-hand threads) 0501501 WASHER, LOCK, M6 0501478 WASHER, PLAIN, M6 0512345 IMPELLER 114139 SEAL 110285 GASKET 114137 BACKPLATE, PUMP 107337...

  • Page 34: Wash Tank, Drain, Scrap Screens - All Models

    Wash Tank, Drain, Scrap Screens - All Models 23 28...
  • Page 35 HEATER, 120VAC 750W (For Low Temp.120VAC Models Only) (201HTN, 201LT, 401HTN 501HTN, 501LT) ---- 0512168 HEATER, 230VAC 1200W (201HT, 501HT) Prior to S/N 14326 ---- 0512426 HEATER, 230VAC 2000W (201HT, 501HT) Beginning with S/N 14326 and above (for all except 501HT)

  • Page 36: Built-In Electric Booster (201Ht, 401Ht, 501Ht)

    Built-in Electric Booster (201HT, 401HT, 501HT) 401 HT Only...
  • Page 37 Built-in Electric Booster (201HT, 401HT, 501HT) Item Part Description Qty. 0509042 BOOSTER TANK 0512185 BOLT, HEX FLANGE 1/4-20 X 3/8 SS 0508817 PLUG, 1/8 HEX COUNTERSUNK 109985 SEAL, ELECTRIC HEATER FLANGE 111235 HEATER 5/6.6KW 208/240V 111233 HEATER 7.5/10KW 208/240 (70 DEGREE RISE)

  • Page 38: Base Electrical Components - All Models

    Base Electrical Components - All Models For Booster Heater (Beginning with S/N 14236 and above) For Wash Tank Heater (All S/N’s) For Booster Heater (Prior to S/N 14236) 201HT, 401HT, 501HT For Wash Tank Heater (All S/N’s) 201LT, 501LT...
  • Page 39 All Models - Base Electrical Components Item Part Description Qty. 0512108 THERMOSTAT, BOOSTER (Beginning with S/N W14236 and above) (501HT, 401HT, 201HT) 109069 THERMOSTAT, BOOSTER (Prior to S/N W14236) (501HT, 401HT, 201HT) 0507323 THERMOSTAT, WASH TANK (All S/N's) (501HT, 401HT, 201HT)

  • Page 40: Fill Piping - All Models

    Fill Piping - All Models...
  • Page 41 All Models - Fill Piping Item Part Description Qty. 0502653 ELBOW, 90 DEGR 3/8MPTX1/2 HOSE 0512185 BOLT, HEX FLANGE 1/4-20 X 3/8 SS 0300065 SUPPORT, VALVE 0300203 CLAMP, VALVE 0502618 HOSE BARB, 1/2 X 3/8 MPT 0503679 CLAMP, SS GEAR-MIN. 5/16-MAX.7/8 0509526 HOSE, 1/2 X 7FT FEM.GARD.ADAPT.

  • Page 42: Fill Valve Assy - All Models

    Fill Valve Assy - All Models...
  • Page 43 All Models - Fill Valve Assy. Item Part Description Qty. 0504952 SOLENOID VALVE, COMPLETE (5.0 GPM) 0502803 STRAINER SCREEN, SOLENOID VALVE 0502804 WASHER, SEAL 0504958 WASHER, FLOW 5.0 GPM 0502807 GASKET 0502811 KIT, REBUILD 0505229 GUIDE 0501406 SCREW, SLOT SS RH 8-32 X 1/2 0505235 COIL, 115V 60HZ 10W...

  • Page 44: Fill Chute Assy - All Models

    Fill Chute Assy - All Models FROM TOP OF BOOSTER OR FILL VALVE FROM DETERGENT PUMP FROM RINSE-AID AND SANITIZER PUMPS...
  • Page 45 All Models - Fill Chute Assy. Item Part Description Qty. 106090 TIE PLATE 0509048 GASKET, INLET CHUTE 0508867 CHUTE, INLET INJ.MOLDED 0507709 WASHER, FLAT #10 SS 0503722 NUT, HEX 10-32 SS 0502666 HOSE, 1/8ID X 1/4OD PVC 8 ft. (RINSE AID AND SANITIZER PUMP) 0502667 HOSE, 1/4ID X 3/8OD PVC 8 ft.

  • Page 46: Sprayarm Assy - All Models

    Sprayarm Assy. - All Models...
  • Page 47 All Models - Sprayarm Assy. Item Part Description Qty. 0501478 WASHER, 17/64IDX9/16 OD18G SS 107967 NUT, HEX SS 1/4-20 NYLON INSERT H35509 HUB,UPPER WASH ARM 107873 WASHER, PACKING 110215 SCREW, RETAINING 0502571 CLAMP,HOSE GEAR HOSE 1-1/2” SS 0512120 HOSE, UPPER WASH ARM, 0712749 ASSY., BEARING 0512129...

  • Page 48: Main Terminal Block, Timer Board - All Models

    Main Terminal Block, Timer Board - All Models Try replacing the 4 Amp fuse before replacing the circuit bd.
  • Page 49 SCREW TRUSS SLOT SS 10-32X3/8 100213 SCREW, 10-32 X 1/4", TRUSS HD. 0504951 BLOCK, TERMINAL, 3-POLE (Prior to S/N W14236) 501HT, 401HT, 201HT Only 0509527 BLOCK, TERMINAL, 4-POLE (Beginning with S/N W14236 and above) 501HT, 401HT, 201HT Only 0312339 COVER, ENCLOSURE, ELEC. CONN...

  • Page 50: Rinse-Aid/Sanitizer Chemical Dispensing Pump - All Models

    Rinse-aid/Sanitizer Chemical Dispensing Pump - All Models To Injection Point...
  • Page 51 All Models - Rinse-aid/Sanitizer Chemical Dispensing Pump Item Part Description Qty. 0503756 MOTOR, INJECTOR PUMP 0706635 TUBE, ELEMENT ASSEMBLY 45CC 0707142 ROTOR, ASSEMBLY 0501519 TIE, NYLON 4i 0505483 LABEL, RINSE AID ---- 0503694 LABEL, SANITIZER 0306363 TUBE,1/2IDX11-7/8LG. STIFFENER 0501869 STRAINER 0504822 SCREW, 8-32 X 1/2 PAN HD PH S.S 0506589...

  • Page 52: Detergent Chemical Dispensing Pump - All Models

    Detergent Chemical Dispensing Pump - All Models Yellow Rollers Check the squeeze tube every six months for wear.
  • Page 53 All Models - Detergent Chemical Dispensing Pump Item Part Description Qty. 0510870-1 GEARMOTOR,108 RPM, 115/60/1 114203 PUMP HD KIT, PERISTALIC 114202 TUBE ASY,SANTOPRENE,1/4IDX8.25 0501519 TIE, NYLON 4i 0502644 ELBOW, 1/4 HOSE BARB 0501519 TIE, NYLON 4i 0502667 HOSE, 1/4ID X 3/8OD 0503695 LABEL, DETERGENT 0306363...

  • Page 54: Control Panel (201Ht/Htn, 201Lt, 401Ht/Htn, 501Htn, 501Lt)

    Control Panel - (201HT/HTN, 201LT, 401HT/HTN, 501LT) 401HT ONLY 401HT ONLY...
  • Page 55 (201HT/HTN, 201LT, 401HT/HTN, 501LT) - Control Panel Item Part Description Qty. 0512220 SWITCH, ROCKER DPDT, 120VAC, (201HTN, 201LT, 401HTN, 501LT, 501HTN 0512221 SWITCH, ROCKER DPDT, 250VAC (201HT, 401HT ) 0512232 LIGHT, INDICATOR, GREEN LED, 2VDC, (All Models) 0512218 PUSHBUTTON,GREEN 0512217...

  • Page 56: Control Panel With Digital Display (501Ht)

    Control Panel with Digital Display - (501HT, 501HTN)
  • Page 57 (501HT, 501HTN) - Control Panel with Digital Display Item Part Description Qty. 0512221 SWITCH, ROCKER DPDT, 250V NEON (501HT) 0512220 SWITCH, ROCKER DPDT, 120V NEON (501HTN) 0512232 LIGHT, INDICATOR, GREEN LED, 2VDC 0512213 SWITCH, PIEZO 0512226 SWITCH, ROCKER, ROUND, SPDT, MOMENTARY 0501408 SCREW, TRUSS, SLOT SS 8-32 X 1/4 0512113...

  • Page 58: Door Assy - All Models

    Door Assembly - All Models...
  • Page 59 All Models - Door Assembly Item Part Description Qty. 0312171 HANDLE, DOOR 0312172 HANDLE, DOOR, 501HT ONLY 0501408 SCREW, TRUSS SLOT SS 8-32 X 1/4 0712164 DOOR WELDED ASSY 0712162-1 HINGE, RH ASSY 0501476 WASHER,SS 9/32 X 5/8 OD 0501422 BOLT, HEX SS 1/4-20 X 1-1/2 0512122 SPRING, DOOR...

  • Page 60: Panel Assy - All Models

    Panel Assembly - All Models Prior to S/N W100120006 Beginning with S/N W100120006 and above...
  • Page 61 All Models - Panel Assembly Item Part Description Qty. 0312193 PANEL, FRONT (201HT/HTN, 201LT, 501LT) 0312193 PANEL, FRONT (401HT) (Prior to S/N W100120006) 0312372 PANEL, FRONT (501HT, 501HTN) 100779 SCREW 1/4-20X5/8 TRUSS SS PHIL 108826 GROMMET 0312174 PANEL, RH SIDE...
  • Page 62 Blank Page This Page Intentionally Left Blank...

  • Page 63: Electrical Schematics

    201HTN, 401HTN, 501HTN (All S/N’s) High Temp........201HT, 401HT, 501HT (Prior to S/N 14236) High Temp. 201HT, 401HT, 501HT (Beginning with S/N 14236 above) ....High Temp............501HT (Prior to S/N 14236) High Temp. 501HT (Beginning with S/N 14236 above) .........
  • Page 64 Low Temp. - 201LT, 501LT - All S/N’s Low Temperature Undercounter - All S/N’s...
  • Page 65 High Temp.- All S/N’s - 201HTN, 401HTN, 501HTN All S/N’s 201HTN, 401HTN, 501HTN High Temperature Dishwasher w/o Built-in Booster...
  • Page 66 High Temp. - 201HT, 401HT - Prior to S/N 14236 Prior to S/N 14236 201HT, 401HT High Temp w/ built-in boosters...
  • Page 67 Beginning with S/N 14236 - 201HT, 401HT - High Temp. Beginning with S/N W14236 and above 201HT, 401HT High Temperature Dishwasher with built-in booster.
  • Page 68 High Temp. - 501HT - Prior to S/N 14236 SINGLE PHASE THREE PHASE TO CUSTOMERS DISCONNECT SWITCH PER LOCAL ELECTRICAL CODES 115-208/230V 60HZ 208/230V+115V NEUTRAL 60HZ WHTR 115 V NEUTRAL 115 V 1HTR 1HTR BOOSTER HEAT BOOSTER HEAT 208/230 VAC 208/230 VAC 5 kW 5 kW...
  • Page 69 Beginning with S/N 14236 - 501HT - High Temp. Beginning with S/N 14236 and above 501HT High Temperature Digital Display Undercounter...

  • Page 70: Timer Chart

    Timer Chart - All Models...

  • Page 71: Basic Service

    Basic Service Basic Service Illustration Digital Temperature Display Board (501HT Only) ........Digital Temperature Display Codes (501HT Only) ........Timer Board Selector Switch (All Models) ..........Timer Board Troubleshooting Guide (All Models) ........Timer Board Diagnostic Testing (S/N W081217467 and above) ....
  • Page 72 Digiital Temperature Display Board - 501HT...
  • Page 73 Digiital Temperature Display Board - 501HT p/n 0512106 Digital temperature Display coDes Display coDe cause Wash Display Wash temperature is below 100°F Wash temperature is above 180°F Wash tank has no water and heater is on Bad booster thermistor Open or broken wire between thermistor and board Loose connection Wash tank has no water and is extremely hot...
  • Page 74 Timer Connection Diagram - All Models...
  • Page 75 All Models - Timer Board Troubleshooting Service Bulletin Troubleshooting Timer Board P/N 0512105 201, 401, 501, UH100, UH170, UH200 June 2009 SINGLE PHASE THREE PHASE TO CUSTOMERS DISCONNECT SWITCH PER LOCAL ELECTRICAL CODES 115-208/230V 60HZ 208/230V+115V NEUTRAL 60HZ WHTR 115 V NEUTRAL Test/Condition Indication/Cause...
  • Page 76 Timer Board Diagnostic Testing diagnostic testing for p/n 0512105 solid state timer board - effective serial # W081217467 and up before testing, turn the power switch OFF and allow the machine to complete the drain cycle. check incoming voltages Open the door If the green cycle indicator light blinks, the dOOr sWItch and cyclE lIght work Note: this function times out after 10 seconds close the door...

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