Amica EBI 8562 AA Oven Overheating: Top Panel, Touch Display, Child Protection Failures

Hello and welcome,
as the topic. 4 months after the warranty, the Amica electric oven began to fail. The top panel (the one above the glass - with the knobs and the touch display) started to overheat. In general, the oven is protected against children's touch - it should not heat up. However, recently during baking, the top panel is terribly hot. It's so hot that the touchscreen started to go crazy - it overheated and started turning on, switching and beeping on its own. Interestingly, during the operation of the oven, there is a gap in the upper gap between the panel and the glass, where the fan blows hot air during the operation of the oven. However, after baking, it no longer works. All the heat is transferred to the very center of the top panel (where the display is and below it), where it is boiling - you can't touch it. It is warmer than during operation and the panel starts to fail. Previously, the panel did not heat up. Please, if possible, any opinions on what could be the cause and whether it makes sense to fix it or it is better to buy a new oven. Amica specialists charge PLN 200 for the access and analysis alone, and they suggest faulty operation of the fan/seal or thermostat, i.e. repair may be expensive. I haven't invited a professional yet, because as I said, I don't know if it's worth it or if it's better to buy a new oven ... I am asking for advice.
Regards,
Martin

First, check that the thermostat is not damaged. New is not a fortune ~ PLN 50. The question is whether the clock chip has not been damaged by temperature.

The thermostat is probably operational - it pops when turned (0-50 degrees) and the LED is on when turned on. Besides, I did not notice that the oven was heating incorrectly, i.e. it was burning something or underheating. The touch panel and the clock work - i.e. they react to touch, the clock shows the time. Only the tap responsible for the temperature when pulling out something buzzing (like a spring?)

The question is whether after reaching the temperature it turns off, i.e. whether the heating lamp goes out.

Yes, I just checked the baking at 100 degrees, the light went out.

At the back of the oven is a cooling fan for the top of the oven and the space under the clock electronics. It is a radial fan and you can't hear it when it works. Most likely it got stuck or jammed. Not to be confused with the rotisserie drive motor.
This is how it should look

You can hear the fan running and air is exhausted from this gap between the lid handle and the lcd screen. However, when the oven is turned off, nothing is blown out or heard. Then all the temperature goes to the center of the top panel and is boiling (warmer than when the oven is operating).

Well, now I'm just guessing - maybe there is some kind of thermostat that turns this fan on and off when the temperature in this area is low enough that nothing will burn. Remove the covers at this point and take pictures. I am interested in where this fan is powered from - whether only from the heating program switch or maybe from the clock panel.

Ok, I'll play with it over the weekend and let you know what and how, probably a friend of the household appliance serviceman will also report on the forum. Anyway, thanks a lot for any suggestions

So yes, after the visit, the service technician reportedly found a damaged thermostat - it overheats by 20 ° C and a slightly overheated function connector. He wants to collect PLN 400 for the whole operation. I watched the videos and I think I would change it myself because the cost of even a thermostat is PLN 50.

Except that I still don't know if it's the thermostat's fault. What effect can a broken thermostat have on the fact that the panel suddenly started to heat up and after turning off the oven, the entire temperature goes under the touch screen and it is even warmer? As previously suggested magi the thermostat was working, but the difference with the internal thermometer is 20°C more.

These 20 degrees are not the fault of the thermostat itself, but the so-called oven heating hysteresis. He tested it after taking it out or measured how much was in the oven after turning off the heater. Because if you take this measurement without removing it, you can hit a certain part of the body. Check the cooling duct on the top of the oven if anything is blocking the air flow - there may be some dust stuck together or something else. And wash the cooling fan itself (the blades may not be too clean) plus lubricate the bearings with penetrating oil. It certainly won't be worse. Take pictures of the cooling channel before and after cleaning.
I've never remotely repaired something using a WHATSAPP broadcast or something similar, what do you think?

Of course Except that I'm not a mechanic and I don't have any professional equipment or parts to replace. Just a set of screwdrivers etc As I say, I can order a thermostat, etc., only if he is the culprit

For starters, however, I suggest reviewing these cooling the top of the oven. As for the thermostat - in my opinion, it is functional, at most set the temperature lower by these supposedly 20 degrees. Removing the oven from the furniture housing is rather not a problem and at the beginning check if the same happens when the oven is removed outside. I would conduct the test at the beginning at a temperature of 150 degrees and then at about 200. You will see how the ventilation works and what happens after turning off the whole thing. And so that the device can be cooled if necessary, a powerful hair dryer with the heating function turned off.

Ok tomorrow around 12 I will disassemble the oven. I have a dryer I have WD40. I will follow your instructions. Except that when I say when the oven is on, the top fan works and blows from the slot, it also works ... well, I have no idea. I'll watch tomorrow and let you know
PS:
I found a topic on a foreign forum where someone describes a similar case. The solution turns out to be something called "thermocouple". In addition, there is a suggestion that the thermostat causes the fan to shut off too quickly, which causes overheating. The fact is that when the oven is turned off, the fan stops working. I don't remember what it was like before. Is it supposed to be like that or should it run a little after turning off to cool down? In the case of the Amica induction hob, after heating, you can hear it cooling down after switching off. Does this fan have a thermostat? What regulates the operation of this fan? Thermal or thermostat?

Here is a link on a foreign forum:
http://forums.moneysavingexpert.com/showthread.php?t=5268079

So yes, the oven is dismantled first. It heats up normally, i.e. I don't have a thermometer to check it, but it heats up and cuts off normally. The fan works when the oven is turned on. Doesn't work when turned off. It's clean, the chamber is clean. As I mentioned in the post above, I do not know if it should not be that after turning off the oven, the fan should still work. What is responsible for his work?

Hello
I have the same oven as yours. The cooling fan turns on when the oven is turned on and turns off when the oven is turned off. A difference of 20C is acceptable. It's possible that your cooling fan is underperforming. Check that the seal is not damaged and that the door fits properly.

This gasket at the door sits ok, the door is the same ... The problem is that after turning off all the heat goes up through this hole and heats the entire upper panel to boiling and then the screen goes crazy ... But as if the gasket or the door were bad this heat would escape and not escape... The top, however, is boiling. The fan runs regularly and throws the heat away. While baking, it works ok. But after turning it off, it heats up only when it no longer works.
I don't fucking know what it is... I think I'll buy a new oven...

Don't buy a new one - relax, man made it - people will fix it. In the future, when using the oven, do so after the baking process and turn everything off to zero, just leave any baking program but set the thermostat to zero, the fan will work and cool the whole thing after a dozen or so minutes. The fan is turned on together with the lighting (I can tell from the pictures of the wires) of the oven, so there is no way to maintain cooling after turning off the whole thing. I repeat once again - there is something in the cooling channel or the outlet is clogged with something or there is no air supply from the back because there is a wall in the furniture and all the hot air was ground inside the furniture - nothing else is out of the question.
And one more question - after removing the whole thing from the furniture (and of course after starting the oven at about 200 degrees) did you check if the air from cooling the top of the oven escapes and is it very hot? The thermal protection of the oven should not turn off the whole thing, only the heaters themselves - I can see it in the wires. If this is the case, there is something wrong with the heating type switch.

The oven heats up the same when removed. When the fan is running, it's ok. When it stops, all the heat spreads to the top. The air is warm and without a fan, it hardly gets outside. There is a hole in the oven cavity that leads to the fan compartment. The specialists from Amica who connected the equipment to me said that there was cooling, and the oven had never heated up before.

Of course, due to the fact that it is a built-in device, it is not ventilated on all sides. Behind the wall it has a good few cm, as I said before, nothing happened to it and it was cool. The gap between the glass and the panel is empty, there is nothing clean in it. I purged. The fan was also cleaned. The hole in the oven is also clean.

Your idea of overheating is ok, but it's also not an ideal solution - I set the baking to 200 degrees - then I set the regulator to 0 ° C and to 50 ° C, the panel was cooling down, but still very slowly, probably for several dozen minutes. As a test, I set 50 ° C to check the operation of the thermostat. After about 20 minutes, the diode from the thermostat surprised only at 120 ° C, which would mean that the oven is still hot (it is about 100 ° C) despite the passage of time ... So the panel was hot, but not boiling. No less and still hotter than when baking with a fan.

Fan chamber checked lengthwise and across, run over with a rag, air, wiped and fan sprayed with WD40. He walks as he did. It runs evenly and spins. I don't know if it's too fast/too slow. I can't see any irregularities so moderately.

In the earlier photos you can also see that on this function connector the plates are purple from the back - they probably sintered during this overheating of the oven, so they will probably sit down in a while...

Possibly, I was thinking of buying a thermostat and a thermostat for PLN 100, but I do not know if this is it ... I will handle the connection calmly.

Replacing the thermostat will not destroy you financially and at the same time there will be no doubts about whether it is ok or needs to be replaced. You can also check with a voltmeter (or a light bulb) whether the heating type switch is operational (I mean if any of the contacts are not stuck together and one of the upper heaters does not heat all the time).

And do you think that how to order something thermostat or thermostat and this thermal fuse? Also, could you point out the location of this heating switch, i.e. where is it located? I'm green on these things I'll try to put a bulb in because I don't have a voltmeter...

At north.pl you will find originals and replacements (rather buy originals).

https://north.pl/karta/termostat-do-oven-amica-ebi-8562-aa,FVV-ZB-CMMV-E9K.html

and:

https://north.pl/karta/regulated-thermostat-amica-ebi-8562-aa,D87-LR-CMMV-E9K.html

In the afternoon, in the photo you sent, I will mark where to put the bulb clamps to check whether the heater is on the heel or not depending on the set heating mode.

Okay thanks a lot.
And do you think that the thermostat or this thermal switch can affect these overheating or regulate the fan's operation (faster-slower)? In general, it is not written anywhere what is affected by safe thermal ... Once, that for cutting off the heating / turning off the oven, once for the fan ... Because I really do not know what it can heat up from. It's like it's not cooling properly because it's running fine. During baking, it is also not hot, but this panel is warm, but after turning off the oven, as if there was no cooling ...

Basically, the thermostat turns off the power supply to the heaters during their heating and stabilizes the set temperature at, say, some level. The second, let's call it a thermal switch (the white one screwed to the protruding sheet at the back of the oven) is a thermal protection so that what is in the oven does not burn and evaporate. I mark if the thermostat sticks and does not open after reaching the set temperature. Perhaps the thermostat heats everything so much that it overheats and this is the result. This type of motor has no speed control, it slides the same all the time, so it either spins or it doesn't.
edit:
And one more thing - take a picture of what you called the hole (hole) through which the heat goes, and do something like this ... Only turn on the backlight of the oven, and the thermostat to 100 ° C and if by any chance one of the heaters does not heat up (because this would mean that the heating type selector is defective).

With the light on and the thermostat at 100 degrees, the oven is cold, the fan is moving.

Well, that's ok. Depending on the set heating option, the voltage on the heaters will be between the terminals:

Quote:

1-2 top heater 1
1-3 top heater 2
3-4 thermo circuit heater
5-6 (the picture does not show, but there must be a heater at the bottom) bottom heater.

Applying a 230V bulb (specifically wires connected to it) or a voltmeter. Lighting up indicates that this heater is heating. If there is voltage on a given heater, and the setting of the heating option is different, it will mean that the switch of the heaters is damaged.

Do one more check - put a piece of paper between the oven and the oven door and to remove it, it comes out with resistance or slips out loosely.
I corrected TONI_2003

Ok thanks, I will test on Saturday I have a voltmeter.

I'm wondering if it's possible that these ovens just heat up like that, and I didn't pay attention to it until the display flashed. So after turning off the fan does not work and all the heat after turning off is focused on the top panel near the display. At the same time, I'm just curious why the whole oven around the casing, etc. even the sockets, these plates are plastic, the screen or these plugs are asking for overheating if everything is so hot.

In the same way, this function connector is purple on the back, maybe from heating, or maybe it overheated ... I don't know anymore. Maybe he panics unnecessarily, but the fact is that the electronic panel went crazy, probably from the temperature because it was very hot and started beeping and switching functions on its own. Only when he cooled down did he stop freaking out.
I corrected TONI_2003

Calm down, I don't see any tragedy and there is nothing here to indicate that the oven is ending. Try this with a piece of paper and let me know how it turned out.

@Tr1SH
Hello,

A prosaic question. How do you non-invasively disassemble and remove the knobs in this oven? I need to replace the programmer in the twin oven Amica EBI 6521, TYPE: 1142.3TsYDHbXSp, Product's code 53326. To do this and remove the screws that hold it, I need to remove the knob from it. I would like to ask for info, because I don't want to accidentally damage it. Thanks in advance for your help.

I have attached a picture of this knob.
WP_2017112...19_Pro.jpg Download (1.26 MB)

Hello, map a similar problem with the overheating panel in this EBI 8562 AA model, did you manage to diagnose the fault, because in my case it caused damage to the programmer, i.e. it turns on itself, and sets e.g. the time and the thermostat is damaged because instead of the temp. 180 degrees in the oven is actually 225 degrees, if I set it to 150 degrees, it's actually 170 degrees. I will replace the thermostat and the programmer, but before that I would like to determine what is the reason that the top panel is overheating, the fan works in the upper part and on the side of the door I also feel hot air at . preheated oven. I don't know what exactly this thermostat is responsible for and whether or not to replace it at the same time. ANY IDEAS?