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Viking VGSO166 - User Manual

Viking VGSO166
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Preferred Service
SMC-0007
January 2009
This Base Manual covers general and
specic information including, but not
limited to the following models:
VGSO166
36” Gas
Single Wall Oven
Service
Manual
This manual is to be used by qualied appliance technicians only.
Viking does not assume any responsibility for property damage
or personal injury for improper service procedures done by an
unqualied person.

Other manuals for Viking VGSO166

Questions and Answers

  • K
    Katherine MorganAug 1, 2025
    What to do if my Viking VGSO166 has no display or lights?
    • V
      Victoria SanchezAug 1, 2025
      If your Viking oven isn't working, and the display and lights are off, the issue might be a tripped house breaker. Try resetting the breaker. Another potential cause is defective oven wiring (shorted, open, or burned). In this case, the defective wiring should be repaired or replaced.
  • W
    William SchultzAug 6, 2025
    How to fix Viking VGSO166 when lights don't work?
    • S
      Stacey KingAug 6, 2025
      If the lights in your Viking oven aren't working, start by checking if there's 120 VAC going to the lights, which may indicate a defective bulb. Also, verify the oven light switch changes states when pushed. Finally, check for any defective or broken wiring that may need repair or replacement.
  • W
    wilsonmonicaAug 11, 2025
    What to do if Viking VGSO166 burners are not working?
    • I
      Ian BryantAug 11, 2025
      If the burners on your Viking oven aren't working, but the display lights and fans are functioning normally, several issues could be the cause. First, check if the gas valve is turned off and, if so, turn the valve to the on position. Other potential causes include a faulty igniter (verify voltage to igniter), a defective gas valve (verify resistance and current), a malfunctioning selector switch (verify proper contacts close), a thermostat timer (verify voltage to and from timer), or a sensor (verify resistance).
  • C
    Cassandra GarzaAug 16, 2025
    Why is my Viking VGSO166 not baking?
    • P
      Peter WeissAug 16, 2025
      If your Viking oven isn't baking, several things could be wrong. Ensure the gas valve is turned on. If it is off, turn it to the on position. Other potential issues include a faulty igniter (verify voltage to igniter), a defective gas valve (verify resistance and current), a malfunctioning selector switch (verify contacts are closed), a thermostat timer (verify voltage to and from timer), or a sensor (verify resistance).
  • Y
    yorkmichaelAug 21, 2025
    What causes a Viking VGSO166 Oven not to broil?
    • S
      susanwongAug 21, 2025
      If your Viking oven isn't broiling, several things could be the cause. Start by ensuring the gas valve is turned on. If it's off, turn it to the on position. Other potential issues include a faulty igniter (verify voltage to igniter), a defective gas valve (verify resistance and current), a malfunctioning selector switch (verify contacts are closed), a thermostat timer (verify voltage to and from timer), or a sensor (verify resistance).
  • S
    Stephen LopezAug 27, 2025
    How to troubleshoot a Viking Oven with no convection fan?
    • M
      Mark KingAug 27, 2025
      If the convection fan in your Viking oven isn't working, the issue might be with the convection fan itself. Verify voltage and resistance. Also, verify the selector switch contacts are closed and verify voltage to and from timer. Finally, check for any defective wiring that may need repair or replacement.

Summary

Important Information

Safety Information

Explains safety alert symbols (DANGER, WARNING, CAUTION) and messages, and their meanings.

Warranty Information

Professional 36 Single Wall Oven Warranty

Details the One Year Full, Five Year Limited, Ten Year Limited, and Ninety Day Residential Plus Warranties.

WARRANTY SERVICE

Explains how to obtain warranty service, contact authorized agents, and retain proof of purchase.

General Information

Specifications

Lists overall dimensions, gas requirements, electrical needs, burner ratings, and shipping weight.

Warnings

Provides safety instructions regarding fire, electric shock, and gas hazards.

Electrical Requirements

Details the 120 VAC/60 Hz requirement and electrical shock hazards.

Gas Connection

Covers gas supply line size, inlet type, sealant, and gas leak hazards.

Manual Shut-Off Valve

Explains the need and placement of a manual shut-off valve for gas.

Pressure Regulator

Discusses the built-in regulator, manifold pressure, and input pressure limits.

Flexible Connections

Specifies requirements for flexible gas connectors.

Rigid Connections

Describes rigid gas connection requirements, including Canadian and Massachusetts specifics.

Operational and Installation Warnings

Covers warnings about using the oven as a heater, lifting the oven, checking gas leaks, and handling the door.

Model - Serial Number Matrix

Explains how to interpret model and serial numbers and where to find the data plate.

Operation

Oven Main Panel Overview

Details the Oven Function Selector, Interior Oven Light Control, and Electronic Timing/Temperature Center.

Bake (Natural Airflow Bake)

Full power heat from bottom burners, natural airflow, good for single rack baking.

Convection Bake

Heat from bottom burners circulated by a rear fan for even heat distribution.

Convection Dehydrate

Uses warm, circulated air to remove water from food by evaporation.

Convection Defrost

Uses a motorized fan to accelerate natural defrosting without heat.

Broil (Infrared Broil)

Heat from the top broil element, good for fast broiling meats.

Convection Broil (Infrared Convection Broil)

Top element operates at full power with air circulation from the rear fan.

Diagnostics

Built-In Error Codes

Explains error codes F1 (Shorted probe), F2 (Open Probe), and F3 (Controller Malfunction).

Service Diagnostics and Procedures

Service Situation Chart

Chart detailing component serviceability (front, partial, full removal).

Parts Location - Main Oven

Identifies bake igniter, bake burner, broil igniter, broil burner, and lights within the main oven cavity.

Parts Location - Control Panel

Shows locations of Oven Sensor, Oven Light Switch, Selector Switch, and Thermostat Timer.

Parts Location - Side Oven

Locates Broil Valve, Dual Bake Valve, Shut-off Valve, and Pressure Regulator.

Door Removal and Reinstallation

Step-by-step instructions for safely removing and reinstalling the oven door.

Component Testing Overview

Lists components, voltage, resistance, amperage, and test locations for troubleshooting.

RTD Temperature-Resistance Chart

Provides a chart correlating temperature (Fahrenheit) with RTD resistance.

Troubleshooting Guide

Lists common problems, probable causes, and corrections for oven operations.

RTD Temperature Sensor Testing

Explains how to test the RTD sensor resistance and check for grounds.

Oven Cavity Light Testing

Details how to test oven cavity light bulbs and sockets for resistance.

Convection Fan Motor Testing

Explains how to test the convection fan motor voltage and operation.

Thermostat Timer Testing

Describes how to test power input, output, and wiring for the thermostat timer.

Thermostat Timer Testing (continued)

Further testing of thermostat timer output to selector switch and error code diagnosis.

Error Code F1 - Shorted Probe Diagnosis

Steps to diagnose a shorted RTD probe.

Error Code F3 - Controller Malfunction Diagnosis

Steps to diagnose controller malfunctions and verify voltage outputs.

Selector Switch Testing

Explains how the selector switch controls operation and how to test its contacts.

Bake Igniter Testing

Details how to test bake igniter resistance and check for proper glow.

Broil Igniter Testing

Explains how to test broil igniter resistance and check for proper glow.

Dual Bake Valve Testing

Details how to test the dual bake valve resistance and current flow.

Broil Valve Testing

Explains how to test the broil valve resistance and current flow.

Wiring and Schematics

Wiring Diagram

Provides a detailed wiring diagram for the Gas 36” W. Oven (VGSO166).

Wiring Safety Precautions

Contains critical safety warnings regarding electrical grounding and wire labeling.

Viking VGSO166 Specifications

General IconGeneral
Capacity2.5 cu. ft.
Control TypeElectronic
Interior LightYes
Self-CleaningYes
TimerYes
FinishStainless Steel
Temperature Range550°F

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