Viking VESO127SS Service Notebook
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Viking VESO127SS Service Notebook

Built-in electric wall oven
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See also: Use and Care Manual , User Manual
SERVICE NOTEBOOK
BUILT-IN ELECTRIC WALL OVEN
Models
VESO127SS
VESO527SS
VEDO127SS
VEDO527SS
VESO130SS
VESO530SS
VEDO130SS
VEDO530SS
DESO127SS
DESO527SS
DEDO127SS
DEDO527SS
DESO130SS
DESO530SS
DEDO130SS
DEDO530SS
VIKING RANGE CORPORATION
111 Front Street, Greenwood, Mississippi (MS) 38930 USA 662-455-1200

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  • Page 1 SERVICE NOTEBOOK BUILT-IN ELECTRIC WALL OVEN Models VESO127SS VESO527SS VEDO127SS VEDO527SS VESO130SS VESO530SS VEDO130SS VEDO530SS DESO127SS DESO527SS DEDO127SS DEDO527SS DESO130SS DESO530SS DEDO130SS DEDO530SS VIKING RANGE CORPORATION 111 Front Street, Greenwood, Mississippi (MS) 38930 USA 662-455-1200...

  • Page 2: Important Information

    Safety Information Viking will not be responsible for injury or property damage arising from service performed This manual uses safety symbols to inform the...
  • Page 3 (12) months from the date of original retail purchase. Viking Range Corporation, warrantor, agrees to repair or replace, at its option, any part which fails or is found to be defective during the warranty period.

  • Page 4: Table Of Contents

    Table of Contents Important Information ....................2 Safety Information ........................2 Note to Customer ........................2 General Overview......................6 Specifications.........................7 Serial Number Location....................8 Model Numbers ........................8 Serial Numbers .........................8 Operation........................9 Oven Control Panel........................9 Oven Preheat Chart.........................10 Oven Settings and Functions ....................11 Clock and Timers........................13 Self-Clean Cycle ........................17 Service Procedures .....................18 Part Locator..........................18...
  • Page 5 Full Access ......................... 31 Oven Function Selector Removal ..................32 Oven Thermostat Removal..................... 32 Oven Control Board Removal....................33 Oven Light Switch Removal ....................33 Oven Cycle/Clean Indicator Lights Removal ................ 34 Oven Timer/Clock Removal ....................34 Digital Timer ......................34 Analog Timer ......................

  • Page 6: General Overview

    General Overview The Viking Built-In Electric Wall Ovens are available in various configurations. The oven features include hidden bake elements, two broil element styles (glass enclosed or tubular), TruConvec convection motor and bake element, and two types of oven controls. The ovens are available in single or double oven configurations and come in two widths.

  • Page 7: Specifications

    Specifications Professional Select Premiere Knobs 27" Wide 30" Wide 27" Wide 30" Wide VESO127 VEDO127 VESO130 VEDO130 VESO527 VEDO527 VESO530 VEDO530 Model Number Digital Digital Clock 10-Pass Concealed Element 10-Pass Concealed Element Bake Element 10-Pass Tubular Electric Infrared Glass Enclosed Broiler 2-Speed 2-Speed...

  • Page 8: Serial Number Location

    Serial Number Location The model number and serial number are located on the data plate. The data plate is located on the top left side of the oven cavity under the control panel. Model Numbers E S O 1 2 7 S S V = Professional D = Designer SS = Stainless...

  • Page 9: Operation

    Operation Oven Control Panel The Viking Built-In Electric Wall Ovens are available in two control panel options. Each oven has a Function Selector and a Temperature Control. On double ovens, the Interior Oven Light Switch and Electronic Timing Center are shared.

  • Page 10: Oven Preheat Chart

    Oven Preheat Chart Preheat is defined as the time from room temperature till the oven light cycles off. The following chart represents a typical preheat cycle set at 300° F. The chart shows what elements are on and in what order. The numbered columns represent the number of cycles the oven takes to complete preheat.

  • Page 11: Oven Settings And Functions

    Low Broil Oven Settings and Functions Self-Clean SELF CLEAN BAKE CONV. BAKE BROIL SELF CLEAN BAKE BROIL CONVEC CONV. BAKE BROIL CONV. BROIL ROAST CONV. BROIL BROIL CONVEC CONV. BROIL ROAST CONV. BROIL During the self-clean cycle, the oven reaches elevated temperatures using the broil and bake elements.
  • Page 12 Convection Dehydrate Convection Bake SELF SELF CLEAN BAKE CLEAN BAKE CLEAN CONV. CONV. BAKE BROIL BAKE BROIL BROIL BROIL BROIL CONVEC CONVEC CONV. CONV. BROIL ROAST BROIL ROAST CONV. CONV. BROIL BROIL With the selector set to TruConvec and the temperature control on 200°...

  • Page 13: Clock And Timers

    Setting the Min/Sec Timer Clock and Timers Digital Electronic Timing Center The Min/Sec Timer is designed for accurate timing and can be used at the same time the Bake The Electronic Timing Center is used to program Time or Start Time functions are in use. It can be and control all timing functions.
  • Page 14 Setting the Automatic Start Time Bake the display indicating that the Bake Time program has been set. Program NOTE The Bake Time and Start Time modes of the timer can be used to automatically turn the oven on and For Double Ovens, the word DELAY will show off at a preselected time.
  • Page 15 NOTE Setting the Analog Display Press any function button to clear a completed The time-of-day must be set before any other cycle or function. program can be used. When the oven is first connected to the power, the digital display will Setting the Bake Time Program show 00:00.
  • Page 16 NOTE To set the Automatic Time Bake Program For Double Ovens, the word DELAY will show with either UPPER OVEN or LOWER OVEN, depending on which oven has been selected. 3. Set the Oven Function selector to the desired function – BAKE, CONVECTION BAKE, OR TRUCONVEC, etc.

  • Page 17: Self-Clean Cycle

    Self-Clean Cycle 4. The clean indicator light will remain on until the self-clean is completed or This oven features an automatic pyrolytic self- interrupted and the oven temperature cleaning cycle. During this cycle, the oven reaches drops to a safe temperature. A complete elevated temperatures in order to burn off soil and cycle is approximately 3 1/2 hours with an deposits.

  • Page 18: Service Procedures

    Service Procedures Part Locator...

  • Page 19: Service Situation Chart

    Service Situation Chart Partial Full Single Double Front TASK Removal Removal Unit Unit Serviceable Required Required Door Assembly Inner Door Glass Outer Door Glass Door Hinge Door Handle Door Gasket Oven Racks Oven Rack Supports Oven Temperature Sensor Broil Elements Bake Elements Convection Bake Elements Convection Motor Assembly...

  • Page 20: Partial Oven Removal

    Partial Oven Removal Full Oven Removal CAUTION: The oven is heavy. Removal WARNING: Disconnect power to oven from the installation will require two people. before servicing. Follow lockout/tagout Use care when removing the oven to avoid procedures. damaging the oven, wall, cabinet, or floor. CAUTION: The oven is heavy.

  • Page 21: Door Assembly Removal

    Door Assembly Removal Door Gasket Removal Condition Requirements: Door Lowered CAUTION: Use care when handling the door assembly. Do not lift or carry the door by the 1. Insert a narrow tool or small flat-blade handle. screwdriver into the center of each clip and pry upward.

  • Page 22: Outer Door Panel Removal

    Outer Door Panel Removal Outer Door Glass Removal Condition Requirements: Outer Door Panel Removed CAUTION: Use care when handling the door assembly. Do not lift or carry the door by the handle. 1. Remove four screws that attach the outer door glass assembly to the heat barrier.

  • Page 23: Inner Door Glass Removal

    Inner Door Glass Removal Door Handle Removal Condition Requirements: Outer Door Glass Removed CAUTION: Use care when handling the door assembly. Do not lift or carry the door by the 1. Remove six screws that attach the heat handle. barrier to the door liner. Condition Requirements: 2.

  • Page 24: Door Hinge Removal

    Standard Rack Door Hinge Removal Condition Requirements: Condition Requirements: Door Lowered Outer Door Panel Removed 1. Slide the oven rack forward and then lift 1. Remove four screws that attach the hinge the front end to remove the rack from the to the door liner.

  • Page 25: Oven Light Bulb Removal

    Oven Light Bulb Removal Top Light Side Lights The top light bulb is located in the cavity and uses a 20W bulb. The side light bulbs are located in the oven cavity and use a 5W bulb. WARNING: Disconnect power to oven before servicing.

  • Page 26: Temperature Sensor (Rtd) Removal

    Temperature Sensor (RTD) 3. Apply side pressure to the sensor connector to secure the connector against Removal the opening in the oven liner. The Temperature Sensor (RTD) is located in the 4. While maintaining side pressure on the back of the oven cavity. It is used to sense oven connector, disconnect the old sensor and temperature.

  • Page 27: Broil Element Removal

    Broil Element Removal Tubular Style Glass Enclosed WARNING: Disconnect power to oven before servicing. Follow lockout/tagout WARNING: Disconnect power to oven procedures. before servicing. Follow lockout/tagout procedures. Condition Requirements: Door Assembly Removed Condition Requirements: 1. Remove six screws that hold the broil Door Assembly Removed assembly to the top of the oven cavity.

  • Page 28: Bake Element Removal

    Bake Element Removal 4. Slide the bake element partially out, mark and disconnect the four wires from the bake element. WARNING: Disconnect power to oven before servicing. Follow lockout/tagout procedures. Condition Requirements: Door Assembly Removed 1. Remove the two screws that hold the bake element access panel to the oven frame.

  • Page 29: Convection Baffle Removal

    Convection Baffle Removal Convection Bake Element Removal Condition Requirements: Door Assembly Removed 1. Remove four screws and the oven rack WARNING: Disconnect power to oven support from the oven cavity. before servicing. Follow lockout/tagout procedures. Condition Requirements: Convection Baffle Removed 1.

  • Page 30: Convection Fan Motor Removal

    Convection Fan Motor Removal Convection Fan Blade Removal Condition Requirements: Convection Baffle Removed WARNING: Disconnect power to oven 1. Loosen the fan setscrew counterclockwise before servicing. Follow lockout/tagout two to three turns. procedures. 2. Remove the 1/2 inch nut from the fan. Condition Requirements: Convection Baffle Removed 1.

  • Page 31: Access To Control Components

    Access to Control Components Full Access The Control Components are located on top of the oven. Access is required in order to perform many DANGER: ONLY TRAINED AND troubleshooting procedures and remove some QUALIFIED TECHNICIANS SHOULD control components. The single and double ovens TROUBLESHOOT THIS OVEN WITH are similar.

  • Page 32: Oven Function Selector Removal

    Oven Function Selector Removal Oven Thermostat Removal The Oven Function Selector is located on the The Oven Thermostat is located on the control control panel. It is used to select the oven function panel. It is used to set the oven temperature. It is a (i.e., Bake, Broil, and TruConvec, etc).

  • Page 33: Oven Control Board Removal

    Oven Control Board Removal Oven Light Switch Removal The Oven Control Board is located above the oven The Oven Light Switch is located on the control cavity in the front of the component compartment. panel. It is used to turn the oven lights on or off. It is used to control all oven functions.

  • Page 34: Oven Cycle/Clean Indicator Lights Removal

    Oven Cycle/Clean Indicator Oven Timer/Clock Removal Lights Removal The Oven Timer/Clock is located on the control panel. It is used to control the meat probe, bake The Oven Cycle/Clean Indicator Lights are time, and automatic bake functions. The digital located on the control panel. The Oven Cycle and analog styles are replaced using the same Indicator Light is used to indicate when an oven procedures.

  • Page 35: Analog Timer

    4. Disconnect connectors from the timer. Analog Timer The number of connectors will vary depending on the number of ovens and WARNING: features available. Disconnect power to oven before servicing. Follow lockout/tagout 5. Remove four screws and the digital timer procedures.

  • Page 36: Convection Motor Capacitors Removal

    Convection Motor Capacitors CAUTION: Use care when lifting the Removal control panel assembly from the tabs. The weight of the control panel assembly could The Convection Motor Capacitors are located pull wires from connectors. It will be above the oven cavity in the front of the necessary to remove some connectors from the component compartment.

  • Page 37: Thermal Cut-Out (Tco) Removal

    Thermal Cut-Out (TCO) Removal Lower Double Oven Single Oven and Upper Double Oven The Thermal Cut-Out (TCO) for the lower double oven is located between the upper and lower oven The Thermal Cut-Out (TCO) for the single oven cavities. It is used as a safety device to prevent and upper double oven is located above the oven overheating of electrical components cavity in front of the capacitors.

  • Page 38: Door Latch Assembly Removal

    Lower Double Oven Door Latch Assembly Removal The Door Latch Assembly for the lower double Single Oven and Upper Double Oven oven is located between the upper and lower oven The Door Latch Assembly for the single oven and cavities. It is used as a safety device during the upper double oven is located above the oven self-clean cycle.

  • Page 39: Door Switch Removal

    Door Switch Removal 2. Pull the door switch through the access hole. Single Oven and Upper Double Oven 3. Disconnect two connectors from the door The Door Switch for the single oven and upper switch. double oven is located above the oven cavity in the front of the component compartment.

  • Page 40: Lower Double Oven

    Oven Lights Transformer Lower Double Oven The Oven Lights Transformer is located above the The Door Switch for the lower double oven is oven cavity in the rear of the component located between the upper and lower oven compartment. It is used to reduce the 240 volt cavities.

  • Page 41: Blower Motor

    Blower Motor 2. Remove one screw and the blower guard from the oven. Single Oven and Upper Double Oven 3. Disconnect two connectors from the The Blower Motor for the single oven and upper blower motor. double oven is located above the oven cavity in the rear of the component compartment.

  • Page 42: Lower Double Oven

    Lower Double Oven 2. Remove four screws from the blower motor mounting bracket. The Blower Motor for the lower double oven is located on the back of the oven cavity. It is used to 3. Disconnect two connectors from the reduce air temperature between the oven cavities.

  • Page 43: Door Hinge Receiver Removal

    Door Hinge Receiver Removal Meat Probe Socket Removal CAUTION: CAUTION: Some areas of the oven Some areas of the oven interior are sharp; wear protective gloves to interior are sharp; wear protective gloves to avoid injury. avoid injury. Condition Requirements: Condition Requirements: Oven Fully Removed Oven Fully Removed...

  • Page 44: Troubleshooting

    Troubleshooting Selector and Thermostat Characteristics The tables show the operating characteristics of the selector and thermostat positions. The selector and thermostat are potentiometers (variable resistors) whose resistance varies per user selections. The selected resistance informs the board of the user’s selections. Selector Resistance –...

  • Page 45: Component Testing

    Component Testing Component Operating Voltage Resistance Test Location (approximate) (approximate) Convection Element 240 VAC 18.2 Ohms K17 yellow – P2 white Outer Broil Element 240 VAC 30.2 Ohms K17 yellow – P6 grey Inner Broil Element 240 VAC 34.0 Ohms K17 yellow –...
  • Page 46 Component Operating Voltage Resistance Test Location (approximate) (approximate) Oven Light 240 VAC 28 Ohms L2 – P12 yellow Transformer – primary Oven Light 12 VAC 0.1 Ohms Transformer – 2 black Transformer – wires secondary Analog Timer 240 VAC 0.57 Ohms Timer L1 –...

  • Page 47: Troubleshooting Guide

    Troubleshooting Guide Problem Probable Cause Correction No bake, no broil, no House breaker or fuse open. Reset breaker or replace fuse. oven lights, no power Defective oven wiring (shorted, Repair or replace defective wiring. to timer L1-L2. open, or burned). No bake, no broil, no Open thermal cut-out.
  • Page 48 Problem Probable Cause Correction No convection broil, Open broil element. Replace broil element. timer display on, Open selector. Replace selector. oven lights operate. Open thermostat. Replace thermostat. Open convection fan motor. Replace convection fan motor. Open relay K12, K13, K5 or K7. Replace power board.
  • Page 49 Problem Probable Cause Correction Blower motor Open blower motor. Replace blower motor. inoperable. Oven sensor out of calibration. Replace oven sensor. Open relay K8 or K9. Replace power board. Open power board. Replace power board. Defective oven wiring (shorted, Repair or replace defective wiring. open, or burned).

  • Page 50: Oven Control Board

    Oven Control Board Oven Control Board Connections...
  • Page 51 Double Line Break Spare 1 Cycle Light Spare 2 Clean Light Door Lock Motor Convection Oven Temp Bake Light Selector Cycle Selector Probe Convection Fan Power Convection Broil Fan Direction Convection Fan Speed Broil Cool Fan Speed Bake Bake 2nd Board Status Clock Manual...

  • Page 52: Communication Between Control Boards On Double Ovens

    Communication between Control Boards on Double Ovens On double ovens, the control boards use a low voltage communication to determine what functions can be performed by both ovens at the same time and in what order. For example, only one oven can be in self-clean mode at a time.

  • Page 53: Strip Circuits And Schematics

    Strip Circuits and Schematics CONVECTION ELEMENT RELAY RELAY 18.2 Convection Element Strip Circuit OUTER BROIL ELEMENT RELAY RELAY GREY 30.2 Outer Broil Element Strip Circuit INNER BROIL ELEMENT RELAY RELAY PURPLE Inner Broil Element Strip Circuit OUTER BAKE ELEMENT RELAY RELAY BLUE WHT YEL...
  • Page 54 CONVECTION MOTOR CONVECTION POWER RELAY 3 ufd 1.5 ufd CONVECTION BLUE BROWN DIRECTION RELAY GREY ORANGE CONVECTION GREEN SPEED RELAY BOARD CIRCUIT Convection Motor Strip Circuit COOLING BLOWER MOTOR WHITE WHITE *18.2 UPPER OVEN WHITE WHITE WHITE BOARD *18.2 CIRCUIT LOWER OVEN *NOTE: BLOWER MOTORS IN PARALLEL MEASURE APPROXIMATELY 9.3 Cooling Blower Motor Strip Circuit...
  • Page 55 DOOR LATCH MOTOR WHITE BLACK BOARD 12.86 CIRCUIT Door Latch Motor Strip Circuit BLACK LIGHT TRANSFORMER BOARD CIRCUIT TO LIGHTS Light Transformer Strip Circuit TIMER (DISPLAY) Digital = 1.2 Analog = 0.57 L2(N) BLACK Timer Display Strip Circuit...

  • Page 56: Wiring

    Professional Select Single Oven...
  • Page 57 Professional Premiere Single Oven...
  • Page 58 Professional Select Double Oven (Upper)
  • Page 59 Professional Select Double Oven (Lower)
  • Page 60 Professional Premiere Double Oven (Upper)
  • Page 61 Professional Premiere Double Oven (Lower)
  • Page 62 Designer Select Single Oven...
  • Page 63 Designer Premiere Single Oven...
  • Page 64 Designer Select Double Oven (Upper)
  • Page 65 Designer Select Double Oven (Lower)
  • Page 66 Designer Premiere Double Oven (Upper)
  • Page 67 Designer Premiere Double Oven (Lower)

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