Viking VGDO271 Service Notebook
Viking VGDO271 Service Notebook

Viking VGDO271 Service Notebook

Gas wall ovens
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SERVICE NOTEBOOK
GAS WALL OVENS
VGDO271
VIKING RANGE CORPORATION, P. O. DRAWER 956, GREENWOOD, MS. 38930 - USA

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Summary of Contents for Viking VGDO271

  • Page 1 SERVICE NOTEBOOK GAS WALL OVENS VGDO271 VIKING RANGE CORPORATION, P. O. DRAWER 956, GREENWOOD, MS. 38930 - USA...
  • Page 2: Table Of Contents

    Table of Contents Important information......... 4 Introduction Testing Procedures General Information........5 Sail Switch............14 Model number location........5 Vent Hi-Limit Switch........14 Important Safety Information Thermal Fan Switch ........14 Safety Practices for Servicer......6 Fan Motors ........... 15 Receiving Wall Oven........
  • Page 3 Table of Contents Baking ............Installation Time Baking ..........38 Packing Material........Delayed Baking ..........39 Oven location..........Prepare for Broiling ........39 Cabinet Opening........Infrared Broiling System ......39 Gas and Electrical Supply Location..Hold .............. 39 Electrical Connection Requirements..Prepare for Self-Clean and Delayed Gas Connection Requirements....
  • Page 4: Important Information

    (such as exposure to electrical shock) may result. CAUTION VIKING will not be responsible for any injury or property damage from improper service procedures. If performing service on your own product, assume responsibility for any personal injury or property damage which may result.
  • Page 5: Introduction General Information

    VIKING gas wall ovens. There may be, however, some parts which need further explanation. Refer to the owners guide or VIKING maintains a toll- free technical support line to answer questions from authorized service technicians. The...
  • Page 6: Safety Practices For Servicer

    SAFETY INFORMATION As with all appliances, there are certain rules to follow for safe operation. Verify everyone who operates oven is familiar with the operations and To avoid risk of electrical shock, property with these precautions. Use appliance only for its damage, personal injury, or death verify wiring is intended purpose as described.
  • Page 7: Receiving Wall Oven

    SAFETY INFORMATION RECEIVING WALL OVEN Installer needs to show consumer location of the wall oven gas shut-off valve and how to shut it off, if 8. Use Only Dry Potholders--Moist or damp necessary. potholders on hot surfaces may result in burns from Authorized servicer must install the wall oven in steam.
  • Page 8: In Case Of Fire

    Do not use water on grease fires SAFETY INFORMATION IN CASE OF FIRE Do not let grease or other flammable material Fires can occur as a result of over cooking or excessive collect in or around wall oven. Do not repair or replace any part of wall oven grease.
  • Page 9: Self-Cleaning Oven

    SAFETY INFORMATION SELF-CLEANING OVEN Do not clean door gasket. Door gasket is essential EXTENSION CORD for a good seal. Be careful not to rub, damage or Due to possible pinching during installation, extension move it. cords should not be used on built-in products. Do not use oven cleaners.
  • Page 10: Product Safety Devices

    SAFETY INFORMATION PRODUCT SAFETY DEVICES Safety devices and features have been engineered into the product to protect consumer and servicer. Safety devices must never be removed, bypassed, or altered in such a manner as to defeat the purpose for which they were intended. Listed below are various safety devices together with reason each device is incorporated in the gas wall oven.
  • Page 11: General Information Baking Guide

    GENERAL INFORMATION Oven Rack Placement Baking Guide Refer to owners manual for following recommendations only as a guide for times and temperature. Times, rack position, and temperatures may vary depending on conditions and food type. For best results, always check food at minimum time. When roasting, choose rack position based on size of food item.
  • Page 12: Removing Oven Door

    GENERAL INFORMATION Removing Oven Door Replacing Oven Light To avoid personal injury or property damage, handle oven door with care. To avoid risk of burns or electrical shock, disconnect • Door is heavy and can be damaged if dropped. electrical supply to oven before changing light bulb. •...
  • Page 13: Care And Cleaning Cleaning

    CARE AND CLEANING Cleaning Part Material to Use General Directions Clean burner area Soap and a non-abrasive 1. Pull oven bottom forward and lift out. plastic scouring pad, cloth 2. Unscrew nut on burner and remove burner baffle. or toothbrush. 3.
  • Page 14: Sail Switch

    T EST PROCEDURES To avoid the risk of electrical shock, personal injury or death, disconnect power before servicing, unless testing requires it. Control compartment tests generally requires removal 4. Disconnect wires from switch connections. of oven from cabinet cutout. See disassembly 5.
  • Page 15: Fan Motors

    T EST PROCEDURES To avoid the risk of electrical shock, personal injury or death, disconnect power before servicing, unless testing requires it. Fan Motors The fan motors are mounted to the control compartment back. They cool the exterior oven cabinets, electrical components and close the sail switch contacts during self-clean operation.
  • Page 16: Auto Latch Motor

    T EST PROCEDURES To avoid the risk of electrical shock, personal injury or death, disconnect power before servicing, unless testing requires it. Auto Latch Motor remove latch motor or switches from latch 1. Shut off electricity at the fuse box or circuit breaker. Do not assembly.
  • Page 17: Oven Temperature Test

    T EST PROCEDURES To avoid the risk of electrical shock, personal injury or death, disconnect power before servicing, unless testing requires it. Oven Temperature Test The following procedure should be used to verify oven temperature calibration. • Verify oven door is adjusted and sealing properly. •...
  • Page 18: Troubleshooting Procedures

    T EST PROCEDURES To avoid the risk of electrical shock, personal injury or death, disconnect power before servicing, unless testing requires it. Problem Probable Cause Correction 1. No oven operation in bake or A. No voltage to ERC A. Check for 120 VAC at ERC broil.
  • Page 19 T EST PROCEDURES To avoid the risk of electrical shock, personal injury or death, disconnect power before servicing, unless testing requires it. Problem Probable Cause Correction 6. Oven light does not operate A. Failed light bulb. A. Replace bulb. B. Failed light switch B.
  • Page 20: Disassembly Procedures

    DISASSEMBLY PROCEDURES To avoid the risk of electrical shock, personal injury or death, disconnect power before servicing, unless testing requires it. 7. Gently pull control panel up and forward to remove complete assembly. To avoid risk of personal injury or property damage this unit requires a two man lift when lifting unit in or out of cutout Removing and Replacing Oven...
  • Page 21: Mylar Control Panel

    DISASSEMBLY PROCEDURES Thermal Fan Limit Switch 1. Turn off and disconnect both electrical and gas supplies to the unit. Mylar Control Panel 2. Open oven door and remove screws securing unit to 1. Turn off power to unit. the wall. 2.
  • Page 22: Lower Oven Door Latch / Door Plunger Light Switch Assembly

    DISASSEMBLY PROCEDURES 10. Push inner assembly of light socket toward rear of range, or twist out, depending on style of base. 11. Disconnect wires from light socket. 12. Reverse procedure to reinstall light socket. Lower Oven Door Latch / Door Plunger Reposition insulation around lamp socket.
  • Page 23: Oven Door Removal

    DISASSEMBLY PROCEDURES Blower Motor 1. Turn off and disconnect electrical and gas supplies Oven Door Removal to the oven. 1. Open oven door and remove screws securing door to 2. Open oven door and remove screws securing unit to hinge assembly. the wall.
  • Page 24 DISASSEMBLY PROCEDURES Oven Burner Ignitor Shut - Off Valve 1. Shut off power and gas supply to oven. 2. Remove oven door and oven racks. 1. Turn off and disconnect electrical and gas supplies 3. Remove oven bottom by lifting from front and to the oven.
  • Page 25 DISASSEMBLY PROCEDURES Door Assembly...
  • Page 26: Installation

    INSTALLATION INSTRUCTIONS Packing Material Gas and Electric Supply Location Remove protective packing material from oven. Tape Gas supply must be located in the area shown. Gas residue can be cleaned with a soft cloth and alcohol. connection must not interfere with the electrical connection.
  • Page 27: Gas Connection Requirements

    INSTALLATION INSTRUCTION Assemble gas supply line to oven. All gas supply In Canada, electrical connections are to be made in piping tubing, fittings, and shutoff valves are not supplied with this oven. See examples. accordance with CSA C22.1 Canada Electrical Code. All electrical connections are to be made in accordance with CSA standards Z240.6.1 electrical requirements NOTE: Refer to National Fuel Gas Code to determine...
  • Page 28: Gas Supply Pressure

    INSTALLATION INSTRUCTIONS Converting Pressure Regulator for Use with G as Supply Pressure Natural Gas or Propane Gas This oven arrives from factory adjusted for use with natural gas. If using LP/propane gas is desired, oven ust be converted. See “Type 1" or Type 2" regulator. To avoid property damage, maximum gas supply pressure must not exceed 14"...
  • Page 29: Converting Type 1 Pressure Regulator For Use With Lp/ Propane

    INSTALLATION INSTRUCTIONS Converting Broiler Burner for Use with LP/Propane 1. Locate orifice spud attached adjacent to pressure Converting Type 1 Pressure Regulator for Use with LP/ Propane regulator and remove for later use. 2. Open oven door and locate broiler burner on oven 1.
  • Page 30 INSTALLATION INSTRUCTIONS 5. Replace trim after burner is tested and air shutter is Converting Oven Burners for Use with LP/Propane Lower burner orifices and air shutters are located properly adjusted. • See “Test and Adjust Oven Burner “ section. behind front trim. Remove oven trim to convert oven burners.
  • Page 31: Gas Connection

    INSTALLATION INSTRUCTIONS Testing for Gas Leaks After final gas connections are made, turn on manual Converting Broiler Burner for Use with Natural Gas 1. Locate orifice spud attached adjacent to pressure gas valve and test all connections in gas supply piping and oven for gas leaks.
  • Page 32: Adjust Oven Burner Flame

    INSTALLATION INSTRUCTIONS Adjust Oven Burner Flame To avoid electric shock that can cause personal injury or death, disconnect main electrical supply to oven before servicing. Lower burner orifices and air shutters are located behind front trim. Remove oven trim to adjust oven burners.
  • Page 33: Programming Instructions

    PROGRAMMING INSTRUCTIONS Controls clock, timer, and interior oven light for both ovens. STOP TIME pad is used to program delayed bake and delayed clean features for both upper and lower ovens. Oven Control Description Controls upper oven settings. Any time or temperature settings entered only effect upper oven.
  • Page 34: Display

    PROGRAMMING INSTRUCTIONS Display Some items in display can be seen but will not glow. Displays temperature and baking method or function for upper oven. Displays time-of-day, timer and Timed of delayed settings. Displays temperature and cooling method or function for lower oven. DESCRIPTION of DISPLAY TIME AM, PM or HR TIME AM or PM Flashes in display while time-of -day is entered.
  • Page 35: Oven Signals

    PROGRAMMING INSTRUCTIONS Oven Signals Preheat signal After setting oven to bake and selecting a temperature, oven preheats. When oven reaches set temperature, 1-second signal sounds. Timer and end-of-cycle When a timed baking cycle is complete or time elapses on timer, three long signals Signal sound, then once approximately every 6-8 seconds.
  • Page 36: Quick Reference Instructions

    PROGRAMMING INSTRUCTIONS To Cancel Remaining Baking Time 1. Press OFF/ CANCEL pad. Quick Reference Instructions Read “Important Safety Instructions” before using Instant Broil “Quick Reference Instructions”. If there are 1. Center food on broiling grid and pan, and place on unanswered questions, see detailed sections of this rack in oven.
  • Page 37: Flashing Display

    PROGRAMMING INSTRUCTIONS To cancel timer, press and hold TIMER ON/OFF pad for approximately 5 seconds. 6. Press OFF/CANCEL pad when finished. Also, to cancel timer, press TIMER ON/OFF pad, then press + or - pad until timer displays “00". Delayed Slow Bake 1.
  • Page 38: Baking

    PROGRAMMING INSTRUCTIONS Baking Open oven door to confirm nothing is stored in oven cavity and set racks to proper height before baking. Oven Rack Placement Position oven rack before turning oven on. Preheat approximately 10 -15 minutes before placing food inside oven. 1.
  • Page 39: Delayed Baking

    • Begin broiling using suggested rack levels in PROGRAMMING INSTRUCTIONS Broil Guide .section to test broiler results. If food is not brown enough, broil on a higher rack Delayed Baking position. If food is too brown, broil on a lower Set oven to begin and end baking at later time.
  • Page 40: Prepare For Self-Clean And Delayed Self-Clean Cycle

    PROGRAMMING INSTRUCTIONS Self-Cleaning Self-clean feature uses high oven temperature to clean Prepare for Self-Clean and Delayed Self-Clean Cycle oven interior. Only one oven can be cleaned at a time. 1. Prepare oven for self-cleaning. 2. Press CLEAN pad. 3. Press + or - pad to adjust desired amount of To avoid risk of personal injury, do not touch oven cleaning time.
  • Page 41: Adjusting Oven Temperature

    Interrupt Self-Clean Cycle NOTES: 1. Press OFF/CANCEL pad. 2. After oven has cooled to a safe temperature, door can be opened. Adjusting Oven Temperature Oven temperature has been factory calibrated and tested. In the unlikely event that oven consistently overcooks or undercooks food, oven temperature can be adjusted.
  • Page 42: Testing Procedures Service Information

    TESTING PROCEDURES “Quick Test” Mode for Electronic Range Control Follow procedure to use the quick test mode. Entries Service Information must be made within 32 seconds of each other or the Electronic Range Control (ERC) operates in control will exit the quick test mode. The quick test conjunction with a transformer/relay board 1, relay mode cannot be reactivated until power is disconnected board 2, and oven temperature sensor(s) to control all...
  • Page 43: Temperature Calibration Offset

    connector pins 3 and 5. TESTING PROCEDURES 1. Turn off power to oven. 2. Attach voltmeter lead to E18 connector on relay Temperature Calibration Offset board. The ERC incorporates ± 35°F calibration offset 3. Attach voltmeter lead to E11 (BK) connector on capabilities for the oven.
  • Page 44: Relay Board 2

    TESTING PROCEDURES Door Lock Relay --K4 Double line break relay okay. Drive voltage at J1 Relay Board 2 connector pins 1 and 7. The relays for oven light, bake, broil, convection 1. Turn off power to oven. element, convection fan and double line break are 2.
  • Page 45: Component Testing Information

    COMPONENT TESTING INFORMATION Illustration Component Test procedure Results Test continuity of receptacle Indicates continuity with bulb Oven light socket terminals. screwed in. Measure voltage at oven light 120 VAC, see wiring diagram for terminal identification If no voltage is present at oven light check wiring.
  • Page 46 COMPONENT TESTING INFORMATION Illustration Component Teat Procedure Result Broil Burner Verify gas is supplied. Proper orifice installed for Natural or LP. Check for damage to screen. Replace if punctured or torn. Pressure regulator Verify gas pressure (WPC). 5" Natural If on LP service verify gas 10"...
  • Page 47 C OMPONENT TESTING INFORMATION ECR mylar touch system Illustration Component Test Procedure Results See Illustrations Mylar touch F1 - Control malfunction. Test mylar touch pad. above system F2 - Oven over temperature. Check sensor wiring, sensor, and temperature limiter. F3 - Open sensor or sensor circuit Check sensor resistance and wiring.
  • Page 48 COMPONENT TESTING INFORMATION Illustration Component Teat Procedure Results ERC Controlled Quick test mode Press and hold Bake Time pad for Clean Double line break (DLB) on 5 seconds within the first 5 minutes Bake DLB and Bake on of power up. (This must be the first Broil DLB and Broil on pad touhed.) Pressing each pad will...
  • Page 49 COMPONENT TESTING INFORMATION...
  • Page 50 COMPONENT TESTING INFORMATION Continuity is indicated as 100Ώ and below. Each pad must be pressed to perform the following test. Switch Matrix Relay Drive Requirements Relay drive requirements are defined as a percentage of on time based on a 60 second cycle. Bake 100% bake Broil...
  • Page 51: Wiring Schematic

    SCHEMATIC WIRING DIAGRAM VGDO 271 BUILT-IN GAS 27” W. DOUBLE WALL OVEN...
  • Page 52: Wiring Diagram

    VGDO271 WIRING DIAGRAM BUILT-IN GAS 27” W. DOUBLE OVEN...

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