Please how do we resolve error 4 on a smeg oven after using the pyrolysis PE cleaing cycle & now the door wont unlock thanks

Number one Tip, NEVER use self cleaning cycles. They only exist to break ovens and sell parts.

Try disconnecting the mains after about 10 minutes of cool down time. If that doesn't work, you will need a service call to correctly diagnose if the lock solenoid has failed or you need a new control board.

Why You Should (Almost) Never Use Your Oven's Self ...

https://www.thekitchn.com > why-you-should-almost-n...

Sep 8, 2022 - Self-cleaning, often with temperatures that go over 1000°, is a particular problem. The elements and the oven just get so hot - much, ...

Why You should Never Run A Self Clean Oven Cycle & A ...

https://www.generalappliancesvc.com > why-you-shoul...

Jan 29, 2020 - With an inside temperature exceeding 500° C, and a flash point (the temperature at which items can self-combust without an ignition source) ...

4 Reasons to Stop Using Self-Cleaning Oven Feature ...

https://fixappliances.ca > 4-reasons-stop-using-self-clea...

A self-cleaning oven is a feature on many modern ovens that burns off cooking spills and splatters at an extremely high temperature (932 F° or 500 C°) to ...
‎How Self-Cleaning Ovens Work · ‎Major Parts Damage · ‎Family Safety

It could be the switch, but also check for chaffed wiring where the wires pass close to or through metal. The vibration of the fan cause the insulation to wear through. The wires are glass coated which frays and exposes the plastic below. If you have used the cleaning cycle, that is also a reason for these failures. Number 1 tip, NEVER use self cleaning cycle

4 Reasons to Stop Using Self-Cleaning Oven Feature ...

https://fixappliances.ca > 4-reasons-stop-using-self-clea...

A self-cleaning oven is a feature on many modern ovens that burns off cooking spills and splatters with an extremely high temperature (932 F° or 500 C°) to ...
‎How Self Cleaning Ovens Work · ‎Major Parts Damage · ‎Family Safety

Why You should Never Run A Self Clean Oven Cycle & A ...

https://www.generalappliancesvc.com > why-you-shoul...

Jan 29, 2020 - With an inside temperature exceeding 500° C, and a flash point (the temperature at which items can self-combust without an ignition source) ...

..

Were you using the dreaded 'Self Cleaning' cycle?

Number one tip, never ever use the self cleaning cycle. The oven locks, wiring and sometimes even the hob wiring can't cope with 1,200'F.

Call for service.

4 Reasons to Stop Using Self-Cleaning Oven Feature ...

https://fixappliances.ca > 4-reasons-stop-using-self-clea...

A self-cleaning oven is a feature on many modern ovens that burns off cooking spills and splatters with an extremely high temperature (932 F° or 500 C°) to ...
‎How Self Cleaning Ovens Work · ‎Major Parts Damage · ‎Family Safety

Why You should Never Run A Self Clean Oven Cycle & A ...

https://www.generalappliancesvc.com > why-you-shoul...

Jan 29, 2020 - With an inside temperature exceeding 500° C, and a flash point (the temperature at which items can self-combust without an ignition source) ...

Same problems, error 4 followed by error 8 on smeg oven SFP496X-1
The cooling fan had stopped working.
I fixed the problem by replacing the 20W ceramic resistor connected to the fan.
The spare parts number maybe 806890480
an image of resistor

Engineer is a solution.
The other solution is;

Switch 3 times between rotisserie and pyrolysis or bread baking setting and pyrolysis.

As acknowledgement the displays are actuated.

At each change of operating modes switch immediately stops the current test step and the next step of the test enabled. The oven light should according to the mode ON or OFF; that is, at pyrolysis OFF otherwise ON.

Hi,

Seems like you found out the hard way what I wrote about in this tip...

Check it out it also contains some thing to try on how to unlock that oven..

Self Cleaning Oven Problem

heatman101

Asker's Testimonial " Wish I had read this first. I never would have usedthe self cleaning option. Thanks for the info!! " - amymrocks

Use a flashlight and look into the hole from where you normally feel hot airflow. Locate the hook holding the door on the left side. Using a thin screwdriver or a knife gently push the hook to the left. Voila! The door is open and functions are back working normally. Also known as Error 4 interlock problem. This will depends on the model of the oven

Hold oven door light in while touching clean cycle enter up arrow or down arrow then hit cancel. door will unlock.

Started the pyrolysis cycle for 1 minute and then cancelled it. The door then unlocked.

Typically on any self cleaning oven, remove the racks and any pots/pans etc and wipe any excessive food stuffs etc from the bottom and set it for 3 hours.