Troubleshooting Guide - Viking VDSC548T Series Service Manual

Service Diagnostics and Procedures

Troubleshooting Guide

Below and on the following page are some general guides should a problem be detected. Please refer to the
test procedures in this manual to determine the defective component.
Problem
Nothing operates
Surface burner igniter
inoperable–no sparking
Igniters spark, but no
flame
Igniters spark continuously
after ignition
Burner ignites but flame is
large, distorted, yellow
Convection fan inoperable
Convection fan operates,
but no heat
Oven lights inoperable
No bake, broil, oven
lights, power to control
board (P1 white to black)
No bake, broil, oven
lights 120 VAC at control
board (P1 white to black)
Bake element inoperable
Broil element inoperable
© 2011 Viking Preferred Service
Probable Cause
Wiring
Breaker
Debris/soil on igniter
Igniter wire
Single point spark module
Gas supply valve
Gas supply interrupted
Power supply is not grounded
Reversed polarity
Wet/dirty igniters
Debris/soil on igniter
Conversion problem
Wrong type gas
Defective oven wiring
Convection fan motor
Oven control board
Defective capacitors
Defective oven wiring
Convection element
Oven control board
Defective oven wiring
Light bulb
Light switch
Door switch
House breaker or fuse open
Defective oven wiring (shorted,
open, or burned)
Defective oven wiring (shorted,
open, or burned)
Oven control board
Defective oven wiring
Bake element
Oven control board
Defective oven wiring
Broil element
Oven control board
Correction
Repair or replace wiring as needed
Reset breaker
Clean igniter and remove debris
Repair/replace wire
Test module (refer to test procedure under diagnostics)
Verify gas supply/valve is on
Check pressure regulator
Verify ground
Verify proper polarity
Dry/clean igniters
Clean burner head
Verify conversion is complete
Verify gas type is proper for range setting
(LP or Natural)
Repair/replace defective wiring
Test convection fan motor
Verify relay operation, wiring, and inputs
Repair/replace defective wiring
Test convection element
Verify relay operation, wiring, and inputs
Repair/replace wiring
Replace light bulb
Test light switch
Test door switch
Reset breaker or replace fuse
Repair/replace defective wiring
Repair/replace defective wiring
Replace control board (check operation of blower motor)
Repair/replace wiring
Test bake element
Verify relay operation, wiring, and inputs
Repair/replace wiring
Test broil element
Verify relay operation, wiring, and inputs
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