[Fortinbras]

Re: Smeg SUK81MX: Oven not working

Absolutely right again Dave!

I noticed hours later that the fan at the front was still running. I have since reinstated the thermostat and the fan has switched-off. I have also tested the other, square-shaped. thermostat which breaks the circuit at high temperatures, that seems to be working properly.

That just leaves the rotary knob on the fascia to investigate. It looks like it could be quite a fiddle (I am not used to this kind of thing… but am reasonably competent with a screwdriver!). Is this likely to be the culprit? I suppose it is just a question of removing and replacing it?

Many thanks, again, for your help.

[Fortinbras]

Re: Smeg SUK81MX: Oven not working

Thanks Dave, that is very helpful.

I will try to summon the appetite to remove the fascia panel tomorrow and see whether the switch has melted. Not sure whether I can test it with a meter?

If so, I will order a new one. Still slightly suspicious that the thermal switch that I removed from the rear of the cooker was ‘open circuit’ across its connections (I think it should have been ‘closed’). Maybe there are a number of contributing factors to this oven failure?

I appreciate you assistance. Thank you!

[Fortinbras]

Re: Smeg SUK81MX: Oven not working

Just one additional thought… is it possible that the Ty60 device works in reverse, i.e. blocking current at normal temperature and conducting at high temperature?

Would it be worth pulling-out the cooker again, removing the rear panel and disconnecting the two wires I had joined together? (Too later for tonight’s dinner, unfortunately, but there is still hope for tomorrow’s Sunday lunch!).

[Fortinbras]

Re: Smeg SUK81MX: Oven not working

Thanks Dave,

Yes the clock is in manual mode. I have switched the mains off and on again and the oven temperature light and fan do not come on until the time has been set, I am presuming that if the elements were working they would also come on with them.

I’m not sure what the ‘multibank’ switch is ‘behind the knob’… would that be for temperature control or grill? Is there any way this could be tested?

You are quite correct, the model number is SUK81MFX1 (although SUK81MFX5 seems to be more common and looks, to all intents and purpose, identical as far as I can tell anyway).

Thanks a lot for your help!

[Fortinbras]

Re: Smeg SUK81MX: Oven not working

…I did, incidentally, use this site to find a local Smeg engineer.

But the earliest they can visit is the week after next!!!
(obviously lots of repair work needed on Smeg devices!)

[Fortinbras]

Re: Smeg SUK81MX: Oven not working

Many thanks for your help.

I decided to dive in and remove the rear panel. I located what looks like a small round safety thermostat (labelled: Campini Ty60). I discovered that there was an open circuit between the two terminals, so removed the wires and by-passed the device by joining them together, then reconnected the power… and still nothing works!

None of the oven elements, or the grill, are functioning. But the fan works, the thermostat lights works (but not the grill light) and the clock continues to remind me that time is running-out!

Any more thoughts?

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