Fan oven question

I would expect it to run continuously, as the elements continue to give out heat when unpowered and the point of the fan is to maintain an even temperature throughout the volume.

Mine (very old Neff) runs continuously AND runs for a while after the oven is switched off.

That's what I thought as that is what my oven does. All I swapped was the stat and you cannot get the connections wrong as there are only 2 but Lou says that the fan has always stopped when up to temp.

Both our Bosch ovens bought at different times, the fan runs continually during cooking and even runs on after the ovens have been switched off to help cool the ovens down. Maybe there was fault in the oven from new?

Richard

Is it a built-in oven?

My built-in Indesit - at least twelve years old - has two fans. One to circulate the hot air around the oven - that stays on during the entire cooking process. The other blows cool air around the outside of the oven to reduce heat damage to the unit it is built in to. That fan only comes on when there's too much temperature build-up but it has an over-run device (like a bathroom extractor fan) and that fan will run on after the oven has been switched off.

Nick

Another data point. On our Belling the oven fan runs all the time the oven is switched on, but it stops when the oven is switched off.

The other fan, which cools the cooker in general especially up behind the controls, has its own thermostat and sometimes runs on long after everything else is switched off.

nib

The one the turns the fan off is a Hot-point HUE61 the other is an Electrolux.

The Hot-point was bought new about 3 years ago and I am tending to agree with you.

A simple wiring diagram if available would sort this out but I cannot find one

Yes you are correct about the other fan.

Both ovens have the secondary cooling fan you mention. It's under the glass hob and both are working - I actually checked this when swapping the stat.

As you said they do stop on for a while after the main oven is turned off.

On mine (Neff, but Bosch & siemens likely to be the same) when in fan mode, the fan runs whether or not the thermostat is up to temperature.

But it has modes where it alternates between the grill element (or the bottom element) and fan mode, in that case the fan does stop when it's the other element's turn.

It is built in, it seems to be the internal fan that keeps running until its cooled.

Is that actually a fan oven, or is it a built-in oven with a fan to cool the outside to stop it from damaging the surround?

It's a very old built in fan oven.

This house is effectively a 1980's museum, Artex, avocado suite, Neff equipment, I don't have the heart to change it!

My fairly new Smeg (2019) does the same.

Our built in Bosch oven runs the fan all the time the oven is on, even when the element is switched off by the stat *and* after the oven has been switched off manually, while it calls. Furthermore - and I don't understand the logic behind this - if you programme the oven to start in (say) an hour's time, the fan starts running immediately even though the oven is stone cold.

The logic behind it is the kind known as 'faulty'. Somebody didn't fully test it.

Ours, also Bosch, runs the oven fan continuously while the oven is on, regardless of whether the element is on. However, it stops as soon as the oven is turned off, leaving the separate fan that cools the control electronics, running for a period.

We've never used the delayed start, so I don't know what happens there.

Double, built in gas oven here, and...

The fan runs when either oven is in use, continuously, then 10-minutes after switch off. Idea is - all heat is ejected out via gaps in the doors, helping keep the oven case cool, and to cool it down, after use.