42/44 Electrical and chassis
Viking Oven Selector Switch
The rotary switch behind the oven mode knob that picks bake, broil, convection or clean.
- Written by
- Hollis Yamada
- Works on
- Service technician — refrigeration and cooking
- Experience
- 21 years in the trade
- Published
What the switch does
On ranges that choose the oven mode with a separate knob, that knob turns a rotary selector switch. Viking’s service notebook for its self-clean dual-fuel ranges shows an eight-position switch there, each setting closing a different group of element contacts for modes such as bake, convection bake, broil and self-clean. It also feeds the relays that carry the heavy current, so a fault here can look like a bad dual-fuel relay board.
How it fails
The switch sits just above a hot oven and below a busy cooktop. Heat dries it, cooking grease drifts into the gaps, and years of turning wear its contacts and detents. Contacts that arc begin to burn, so a mode fails, works when the knob is wiggled, then fails for good. A worn detent lets the knob drift off its setting. If the range is old enough that you are already thinking past it, the page on all-gas or dual fuel when replacing is the next read; the switch itself is a normal Viking oven repair job.
Signs and thresholds
| What you notice | The line it crosses | What happens next |
|---|---|---|
| One mode does nothing while the others heat | The same mode fails every time | Switch contacts and the element for that mode are tested. |
| Knob turns freely without settling into each position | No firm stop at any setting | Worn switch shaft or detent; the switch is replaced. |
| Oven heats only when the knob is held or jiggled | More than once | Stop using that mode; burnt contacts get worse quickly. |
| Wrong heat for the chosen mode | Broil heat on bake, or a fan on a mode without one | Switch and wiring are checked before any board. |
What you can do yourself
- Turn the mode knob slowly through every position with the oven off and feel for a clean click at each.
- Pull the knob straight off and check its insert is not split or rounded; a cracked knob can feel like a failed switch.
- Try each mode briefly and write down which heat and which do not.
- Stop there. Anything past this is a job for Viking Repair Issaquah — call (425) 920-9484.
When to call
Call when a mode stays cold, the knob no longer lands on its settings, or heat comes and goes as the knob is touched.
Call (425) 920-9484Asked about the oven selector switch
Why does only one oven mode on my Viking not work?
Each position of the selector switch closes its own set of contacts, so one burnt contact can kill a single mode while the rest work. The element that mode uses can fail the same way. Viking Repair Issaquah tests both before ordering either; call (425) 920-9484.
Is it the knob or the switch behind it?
Look at the knob first. A split or worn insert slips on the shaft and feels like a loose switch, and a knob is a simple fix. If the shaft itself turns with no firm stops, the switch is worn. Viking Repair Issaquah sorts which on the visit; ring (425) 920-9484.
Do all Viking ranges choose the oven mode with a separate knob?
Not all of them. Viking's self-clean dual-fuel ranges use a multi-position selector switch behind a mode knob, but other models are built differently, so read the model label before assuming which yours has. Viking Repair Issaquah checks it against the parts list for that model; call (425) 920-9484.
