A Viking gas oven that will not heat almost always has a weak bake igniter. As it ages it draws less current and can no longer open the safety gas valve, so it glows but never lights. On electric and dual-fuel models, a failed bake element or control relay is the usual cause.
On a gas Viking oven, the igniter does two jobs: it glows to light the gas and it draws enough current to open the safety valve. As the igniter ages, its resistance rises and its current draw falls, until it can still glow but no longer opens the valve. The result is an oven that heats the igniter but never ignites. This is the single most common Viking oven fault, and replacing the igniter fixes it.
On electric and dual-fuel Viking ovens, the bake or broil element does the heating. A failed element often shows visible damage, a split or a burned spot, and tests open on a meter. A control relay that no longer closes can also prevent heating even when the element is good, so we test both.
Uneven heating rather than no heating usually points to the temperature sensor or the convection fan rather than the igniter or element. Because most Viking ovens are electromechanical, there is no numeric code to read; we diagnose by testing the igniter draw, the element resistance, and the sensor. Each is a discrete, replaceable part on a serviceable range.
Quick Reference
| Oven Type | Symptom | Fix |
|---|---|---|
| Gas | Glows, won't light | Replace bake igniter |
| Electric/dual-fuel | No heat | Test element and relay |
| Any | Uneven heat | Sensor or convection fan |
| Any | Won't reach temp | Confirm igniter/element draw |
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