Viking FDB451 Service Manual
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Viking FDB451 Service Manual

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See also: Use and Care Manual , Installation
Service
®
Preferred Service
Manual
This manual is to be used by qualified appliance technicians only. Viking
does not assume any responsibility for property damage or personal
injury for improper service procedures done by an unqualified person.
Built-In
This Base Manual covers general and
specific information including, but not
Dishwasher
limited to the following models:
FDB451
VDB451
SMK-0005
Aug 2012

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Summary of Contents for Viking FDB451

  • Page 1 Service ® Preferred Service Manual This manual is to be used by qualified appliance technicians only. Viking does not assume any responsibility for property damage or personal injury for improper service procedures done by an unqualified person. Built-In This Base Manual covers general and...

  • Page 2: Table Of Contents

    Door Latch Interlock Removal ....18 Detergent Dispenser ......19 Door Spring and Cable Assembly ..20 Door Hinge Disassembly ....... 21 Parts Location - Interior ......... 22 Lower Spray Arm Removal ....23 Coarse Strainer Removal ...... 23 ©2012 Viking Preferred Service...

  • Page 3: Safety Information

    Always read and obey all safety messages. This is the safety alert symbol. CAUTION VIKING will not be responsible for any injury or property damage from improper service procedures. This symbol alerts you to hazards that can kill If performing service on your own product, you must or hurt you and others.

  • Page 4: General Information

    DRAIN • The access hole for the drain line should be 2” square (5.1 cm). Locate as low ©2012 Viking Preferred Service...
  • Page 5 Use two or more people to move dishwasher. Failure to do so can result in back or other injury. WARNING TIP OVER HAZARD DO NOT push down on open door. Doing so can result in serious injury or cuts ©2012 Viking Preferred Service...

  • Page 6: Model-Serial Number Matrix

    D 1 0 0 0 0 2 3 4 Month Serial number digits Year of manufacture MODEL VDB451SS HOUSEHOLD DISHWASHER VIKING RANGE 120V 60Hz OPER 12.2A ® CORPORATION 2.5A GREENWOOD, MISSISSIPPI OTHER 15.5A LISTED 38930 USA SERIAL NO 041012D10000234 ©2012 Viking Preferred Service...

  • Page 7: Settings And Functions

    PANS and NORMAL WASH. Note: Periods of portion of the cycle is completed. For all other soaking will occur to aid in removal of baked error messages and to deselect the audible on soils sound signal, see the Troubleshooting/ Fault Codes section. ©2012 Viking Preferred Service...

  • Page 8: Illumination Of Buttons

    Note: All cycle times, temperatures and fills are approximate and are dependent on installation and environmental conditions. Note: Heating delays to meet set temperatures may extend the cycle times. Note: AirFlo Gentle Drying will add approximately one hour to the total cycle time. ©2012 Viking Preferred Service...

  • Page 9: Preparing Dishes

    After selecting the wash cycle and options, depress “START” button. The start symbol will illuminate. This merely means the machine is ready. Close the door securely within 4 seconds of pressing the “START” button. ©2012 Viking Preferred Service ©2012 Viking Preferred Service...

  • Page 10: Changing A Program After The Unit Has Started

    If the door is opened after the cycle has started, the ”START” button will flash to indicate that the dishwasher is in Standby Mode. Press the “START” button and close the door securely within 4 seconds to restart the cycle. ©2012 Viking Preferred Service...

  • Page 11: Entering Diagnostic Mode

    This is the indication that the test cycle has completed. Note: During this test cycle, if the control board senses a failure that it is programmed to monitor, it will display an error code. ©2012 Viking Preferred Service...

  • Page 12: Fail Codes

    3. Verify AC connection to the machine control 4. Verfiy connection between machine control and motor control 5. Defective machine control Motor Under Voltage Motor control communicates a low motor 6. Defective motor control Error control voltage condition ©2012 Viking Preferred Service...
  • Page 13 Flash all LEDs but start Power loss occurred 1. Power lost during a cycle and run continuously during a 2. Reset by pressing and holding start for 3 seconds AC Power Loss running cycle ©2012 Viking Preferred Service...

  • Page 14: Parts Location-Door

    Discharge capacitor through a resistor before attempting to service. Ensure all ground wires are connected before certifying unit as repaired and/or operational. Parts Location–Door Door Latch Interlock Control Panel Outer Door Door Spring Assembly Detergent Dispenser Hinge Inside View Side View ©2012 Viking Preferred Service...

  • Page 15: Door Disassembly

    (Control panel is still mounted to outer door panel at this point.) Remove wires going to the door latch and the three connectors going to the control pad and one connector going to start switch, shown above. ©2012 Viking Preferred Service...

  • Page 16: Control Panel Removal

    In order to gain access to control panel, remove outer door panel, see outer door removal procedure, Page 15. Remove control panel, see Control Panel Removal. Remove the four T10 Torx screws as indicated by arrows in photo above, remove user interface board from control panel assembly. ©2012 Viking Preferred Service...

  • Page 17: Start Button Removal

    Removal procedure, Page 15. keeper Remove the two T10 TORX screws that feet mount Start switch to console, see red arrows below, remove switch. Keeper feet are inserted into small rectangular holes in the console, and screwed down ©2012 Viking Preferred Service...

  • Page 18: Door Latch Interlock Removal

    Snug these two screws down all the way, don't overtighten. At this time tighten the T20 TORX screw at bottom of latch. These actions should ensure proper latch alignment ©2012 Viking Preferred Service...

  • Page 19: Detergent Dispenser

    When replacing soap dispenser, a rubber lubricant is required to install the new dispenser, part # 036641-000 (P80 emulsion), this should come with the new dispenser and should be applied to seal before installation. Failure to use this lubricant could result in water leaks. ©2012 Viking Preferred Service...

  • Page 20: Door Spring And Cable Assembly

    The image below shows the spring in its adjusting the door spring tension that default location (sixth hole from the top). you are wearing protective gloves and eye wear. Injury can occur should the spring or cable come loose or slip during assembly. ©2012 Viking Preferred Service...

  • Page 21: Door Hinge Disassembly

    Next remove the outer door panel (see Outer Door Removal section, Page 15.). Disconnect tension cable from hinge. Reverse the procedure to reinstall the hinge. Remove C-Clip securing hinge. Note: Remove C-Clip slowly (clip has spring and can dislodge). ©2012 Viking Preferred Service...

  • Page 22: Parts Location - Interior

    Discharge capacitor through a resistor before attempting to service. Ensure all ground wires are connected before certifying unit as repaired and/or operational. Parts Location - Interior Vent Assy Lower Spray Arm Coarse Fine Filter Filter ©2012 Viking Preferred Service...

  • Page 23: Lower Spray Arm Removal

    Squeeze tabs on coarse strainer to release (shown below). Coarse Strainer Lift coarse strainer out and repair or replace as necessary. Reverse the procedure to reinstall the coarse strainer. ©2012 Viking Preferred Service...

  • Page 24: Vent Assembly Removal

    Remove the panel and set aside to gain access to the mounting screws for the vent assembly, remove screws as shown in photo below. Reverse previous steps for installation. ©2012 Viking Preferred Service...

  • Page 25: Base Pan-Front View

    With the base pan removed, you now have shows the location of these screws. With the access to locate, diagnose, and service all panel removed, locate the moisture sensor the components. and unplug, leaving the moisture sensor attached to the base pan. ©2012 Viking Preferred Service...

  • Page 26: Parts Location - Base Unit

    Ensure all ground wires are connected before certifying unit as repaired and/or operational. Parts Location - Base Unit Rear Levelling Leg Front Levelling Legs Wash Temp Machine Sensor Control Board Drain Motor Motor Blower Diverter Fill Pump/ Flow thru control Motor valve Valve Motor Heater board ©2012 Viking Preferred Service...

  • Page 27: Drain Motor Disassembly

    (below right) to release the pump from the main housing. Grasp the pump and rotate clockwise and the pump can be removed. ©2012 Viking Preferred Service...

  • Page 28: Wash Diverter Disassembly

    It makes it easier to handle the motor assembly. Clamp, Diverter inlet The wash diverter is attached to the sump by the use of three T20 TORX screws. Remove all three screws. ©2012 Viking Preferred Service...

  • Page 29: Circulation Motor Disassembly

    Disconnect the pump inlet hose from the pump assembly. Output Motor Grommet Inlet Filter Clamp Bottom Edge Pump Inlet Clamp The motor assembly can now be removed for service. ©2012 Viking Preferred Service...

  • Page 30: Water Heater Disassembly

    Arrow 2 120-volt,12 ohm, 10 amp, 1200 watt draw. It is While grasping the tabs, pull the sensor out controlled from of the sump assembly as shown. P12 (gray) to Neutral on the main terminal block. ©2012 Viking Preferred Service...

  • Page 31: Fill Valve Disassembly

    Remove the the board and avoid any damage caused by base pan and moisture sensor. The valve static discharge, Viking Range Corporation is secured to the rear frame with two TORX recommends the use of a ground strap.
  • Page 32 Release these tabs in the directions shown by the arrows. Disconnect P4/P9 wiring harness. Now care- fully pull the board down and release from front. P4 P9 Wiring Harness ©2012 Viking Preferred Service...

  • Page 33: Huba (Pressure) Sensor Removal

    Remove front kick plate panel by removing the two screws shown in photos below. nect connector and remove Huba Sensor from unit. You now have access to the Huba Sensor, Reverse previous steps to install Huba Sen- shown in photo below. sor. ©2012 Viking Preferred Service...

  • Page 34: Blower Removal

    Release tabs and slide blower assembly and pull out of mount. Pull blower assembly out towards you slowly as shown above. Disconnected blower motor connection as shown below. Release Reverse previous procedures to install the blower. ©2012 Viking Preferred Service...

  • Page 35: Control Board Test Points

    P6-2 (Gray) – P10-1 (White) 175K Ω Moisture Sensor P8-1 (Red/White) – P8-2 (Purple) Temperature Sensor P8-3 (Black/White) – P8-4 (Blue) 47K Ω @ 77˚ (varies based on temp) Water Heater P12 (Gray) – P10-1 (White) 12.00 Ω ©2012 Viking Preferred Service...

  • Page 36: Control Board Diagnosis

    0 Ω ohms. Open the door and the reading should be infinity (∞). If the readings are incorrect, check the wiring to the door switch and inspect the door switch. Note: Testing the soap dispenser can be achieved in the diagnostic mode. ©2012 Viking Preferred Service...

  • Page 37: Circulation Motor

    0 Ω ohms are read, replace the fill valve (see Fill Valve Disassembly procedure, page 31). Note: Testing the circulation motor can be achieved in the diagnostic mode. P-10 P-10 Note: Testing the fill valve can be achieved in the diagnostic mode. ©2012 Viking Preferred Service...

  • Page 38: Drain Motor

    P8-1 and P8-2 should be 175K Ω and check for obstructions in the drain pump ohms. (see Drain Motor Disassembly procedure, page 27 ). P-10 P-10 Note: Testing the drain motor can be achieved in the diagnostic mode. ©2012 Viking Preferred Service...

  • Page 39: Wash Diverter

    If wiring is Note: If the diverter does not position itself, OK, replacement of the sensor is necessary. a Diverter time out error will display (see Fail Codes, page 12). P-10 P-10 ©2012 Viking Preferred Service...

  • Page 40: User Interface Port

    Voltage between P9-1 and P9-2 should be 12 VDC. If no voltage is found, check ribbon connector. If connector is OK, replacement of the user interface is necessary (see Control Panel Removal procedure, page 16). ©2012 Viking Preferred Service...

  • Page 41: Water Heater

    0 Ω ohms are read, check the wiring to the heater. If the wiring is correct, replace the heater. The heater can also be tested in the Diagnostic mode (see page 12). P-12 P-10 P-12 P-10 ©2012 Viking Preferred Service...

  • Page 42: Dry System

    Cold air enters to the dishwasher and runs though the dishes and become hot and moist This hot and moist air (steam) is sucked by blower though air water inlet and directs to outside through the new duct design ©2012 Viking Preferred Service...

  • Page 43: Troubleshooting

    The moist air is exhausted through the blower out the front kickplate grill There is no heater element in the drying system, drying is accomplished as explained on the previous page. ©2012 Viking Preferred Service...

  • Page 44: Troubleshooting Guide

    Water left in bottom near Normal Some water in bottom is normal filters Dishwasher will not drain Drain hose Verify hose is not obstructed or kinked Drain pump Verify no obstructions in pump ©2012 Viking Preferred Service...

  • Page 45: Wiring Diagrams

    Wiring Diagrams Brown Blue Violet Orange ©2012 Viking Preferred Service...

  • Page 46: Schematic

    Wiring Diagrams ©2012 Viking Preferred Service...

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Vdb451

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