Main oven fan switches off

[Boris45]

I have a 5 year old CDA double oven. When cooking, using the main oven, the main fan switches itself off after about 15 minutes. It will intermittently switch on and off during cooking. The food is still cooked but takes longer to do so. The motor has been replaced and the element appears to be working fine. Can anybody help?

[electrofix]

a lot of ovens have cooling fans to keep the controls cool. is this fan running if it has one

Dave

[Boris45]

Yes it has a cooling fan. It does run when needed. However, I’m referring to the fan in the main oven, located behind the back panel. An engineer will diagnose the problem for 40 pounds, then return with a parts and charge labour thereafter. Pricey.

[electrofix]

I realise you are talking about the fan inside the oven however if the cooling fan was not running then it can overheat causing the oven to switch off till it cools down

right so its not the cooling fan

when the fan switch off does the element still stay on and glow red ? or does that go off as well

let me know the model number please

Dave

[Boris45]

I’ll have to take the back plate off again, let it run and look more carefully at the element. From last time I remember the element did heat up and glow orange but didn’t stay like this for very long. I suspect once the oven reaches temperature the element switches off? The model number is DC740SS/3. I just don’t remember the main fan ever switching off before during cooking.

[Boris45]

You have me very interested now. What switches the main oven fan off? Should it not remain on during cooking? And should the element glow red during cooking?

[electrofix]

fan should run continuously and element should cycle on and off as long as its on the fan oven setting.

if its a fan grill setting things operate differently if yours has that setting

Dave

[Boris45]

Strange then that the fan in the main oven switches itself off. I wonder why??

[electrofix]

Boris45 wrote:Strange then that the fan in the main oven switches itself off. I wonder why??

thats what we need to work out

what i am trying to find out is just the fan going off or is the element going off as well

Dave

[kaibart]

They have a problem with the placement of the tocs thermal cut outs on these dave may be able to help more with technical info as where they sit may have been mixed up since you had the oven

[electrofix]

kaibart wrote:They have a problem with the placement of the tocs thermal cut outs on these dave may be able to help more with technical info as where they sit may have been mixed up since you had the oven

got no access to tec on these but was thinking toc but working around it first. Assume you mean like the Beko one they modified

Dave

[kaibart]

Yes and they mixed up the top oven and bottom oven tocs and rating is different

[Boris45]

I’ll try to look at the element and fan as the oven runs later. Would the thermal cut out then stop the fan and the element? Could then be it!

[electrofix]

normally if its a cut out it all will stop

Dave

[Boris45]

Ran the oven with the backplate off. Ran perfectly for 27 minutes, no cut out. Could it be a ventilation problem? Where do ovens draw air from? If I locate it and clean or vacuum, might be worth a try. All seems to work fine.

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