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Hi,
I have a SMEG SUK91CMX5 – a wide range with a single cavity oven with two fans/elements. The elements both stopped working mid-cooking (no RCD trip)Fortunately this model has a conventional top/bottom element as well so resorted to conventional cooking
The fans work, all ancilliaries are fine – just no heat (the thermostat light comes on – and works fine on conventional setting). I have removed and tested both elements with a multimeter (both going together seemed too much of a coincidence) both show good resistance and so are OK. I removed the back and found two TCO – both tested the same 0.9 ohms. Any ideas for where too next ? I can’t justify smeg call out again to a four year old cooker that cant live for longer than 6 months without seeing its beloved engineer (I even know its tea with two its been that often!)
Any help appreciated (I must be missing the obvious!)Re: Smeg Fan Oven Mystery!
Not familiar with Smeg ovens but single oven with 2 fan elements!…very odd.
Nevertheless with symptoms such as you describe 999 times out of 1000 its the element that fails. Like when the ceiling light goes out you can figure its the lightbulb at fault.
Re: Smeg Fan Oven Mystery!
Hi Martin, thanks for the reply!
The oven is large (double the width of a ‘normal’ oven) and has two seperate elemts and two seperate fans. I thought the elements had gone, but they are seperate, and have had them both out and tested with a multimeter. Both give a god resistance reading (and spot on volts x volts / power in this case 2.2KW each) 24 ohms I’m fairly sure its not the elements. The Thermal cut outs (one for each element) also show as a closed circuit on a tester (albeit very low reading only 0.9 ohms) 😉Re: Smeg Fan Oven Mystery!
Have you checked the elements to ensure no continuity between live and earth terminals, and live and neutral terminals. (a megger is better than a multi meter for this test) Agreed it sounds unlikely for both to fail at once but from the setup it sounds likely that they are wired in series on the same circuit so if one failed it could knock the circuit off for both?
Re: Smeg Fan Oven Mystery!
Hi,
Thanks for the post. I did check both elements to ground as well, and they were both fine (unfortunately ! would have made life easier if it wasn’t)
Am going to submit to the Smeg engineer as I think this has beaten me!Smeg Fan Oven Mystery!
Hi
If I remember rightly the is a small regal pcb at the rear bottom right which controls the element supply.
BRYAN
Re: Smeg Fan Oven Mystery!
Hi Brian – yes there is – but not sure if there is anyway I can ‘test’ it – all the othe relemts work normally (grill/conventional top and bottom oven/hob) It doesnt look charred/burnt or ‘smell’ like its failed, but by a process of elimination I guess it could well be!
Smeg Fan Oven Mystery!
Hi
The only way to check is wether it’s got power in and then out. If theres power in but not out then you’ve found the fault.
Bryan
Re: Smeg Fan Oven Mystery!
Guys – thanks for all your help – appreciated!
I’m going to have another Sunday afternoon dis-assembling and see if I can test the first (its easiest to get at!) then I’ll have a go at the selector.Failing that I’ll give in gracefully and resort once again to the Smeg repair service!
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