Amica Built-in Oven Tripping 25A Differential Fuse After an Hour of Operation: Fuse Issue?

Question

After turning on the Amica oven (built-in), after about an hour of operation, it trips the differential fuse - 25A with the TEST button. The oven and the installation are less than 4 years old.
It also happens after disconnecting the plugs from the sockets of other devices (dishwasher, fridge, TV, computer, washing machine, light). The fuse is not too warm, and you do not smell any suspicious odors by the oven. Was it a fuse?

Trull · Accepted Answer

A breakdown on one of the heaters to ground, I would bet on the bottom or hot-air heater. Measure against ground on a 20M? meter measurement.

Topolski Mirosław · Accepted Answer

You can see that you have excess money. You need to know what you are doing and why, so you can start with the oven and finish the replacement of the entire installation. Wouldn't it be cheaper to call an electrician? - because with the universal meter you could check the heater (if you can) and not replace it. This advice is dictated by our concern for you, because from what you have done, I do not advise you to check anything with a meter, let alone under voltage, because you have no idea about it.

jac0205 · Answer

Well, it's rather a hot-air heater, because basically only this is used.

jac0205 · Answer

Heater replaced. We'll see if it helped ...

jac0205 · Answer

And linden.
The same thing ... Is it possible to check the disassembled (allegedly damaged) heater if it has any punctures? If I have to replace the remaining heaters, it is probably better to buy a new oven. The replacement cost me PLN 130, I wanted to do it myself, but the rear panel resisted and there was a fear of breaking a cable.

Anonymous · Answer

Replace the fuse, Buddy, do not combine it like a horse uphill ... Of course, you have to call a decent electrician for the installation, not one from the round-up ...

movzx · Answer

By the way, there is a chance that a decent electrician will be able to perform basic measurements and make sure whether the oven or the switch itself is damaged.

LiutenetMaria · Answer

Give the designation of this fuse.

jac0205 · Answer

Written from the fuse: EFI-4 25A I AN 30mA AT N ~ 400V 3000 A. 22.5 kA2s 4 pol. IP40

movzx · Answer

So we go back to the starting point - you have to check whether the oven or the switch is damaged (by the way is not is a fuse).

Anonymous · Answer

Not. We return to the point of entry. The switch / switch / fuse is damaged (as he called it, so he called it). From the oven, watcha ...

sebastian.rak · Answer

(Well, now I will probably expose myself to the admin)

secretary
First. Why would you want to replace an item that is not showing signs of damage so far - this is it residual current device and so far it seems to fulfill its function in the installation.
Secondly. Why "From the oven, wara ..." if there is a problem only during its operation:
"This also happens after disconnecting the plugs from the sockets of the rest of the devices (dishwasher, fridge, TV, computer, washing machine, light)"

jac0205
First, it must be clearly stated whether the oven or the RCD is damaged.
If you only have a problem with the oven working, the problem will be with it.
30mA is enough for the RCD to trip.
Puncture does not necessarily occur on the heaters. The heater power cables may be damaged, as well as other elements that are live while the oven is in operation.
If you do not have a meter to measure insulation resistance, look for a good electrician who will have one. Measurement with an ordinary ohmmeter or multimeter may not be sufficient to show breakdown.

Anonymous · Answer

I am in a hurry with the translation. You will not expose yourself to the admin, because he likes it if you talk to him substantively Signs of damage (as per post history) indicate damage anywhere in the oven. There is a statement by both the Author and one of the Forumers regarding hot-air heaters (because this function is most often used by the author). And what turns out? That the replacement of this particular heater did not change anything ... You can continue to replace the other three heaters in this oven, and it will not do anything anyway. I will fly further. You can even replace the oven with a funkiel nówcię straight from the showroom. And it will be the same. And now the hundred-point question. Why, when the oven is used for almost one hour, nothing happens? And why exactly when the oven is working (after an hour) it triggers a differential? On the other hand, the other devices do not have such symptoms after being switched on to the network? :?: A hundred punciorów would recommend it if someone explained it meaningfully to me. I know why this is happening.

jac0205 · Answer

buddy Topolski Mirosław: the equipment has been returned to the service.
Right, I don't know anything about it, so that's why I entrusted it to a professional. However, as it turned out, he was rather a pseudo-specialist. I described the problem to him and he said it was 100% heater and he replaced it, but the problem did not disappear. I go to this establishment again after Christmas.

jac0205 · Answer

The problem seems to be resolved. The power magician came, measured, examined, looked and replaced the upper heater. Oven checked for several hours. Nothing happened.

Topolski Mirosław · Answer

You do not write anything about your visit to this plant. Was it an authorized home appliance service or an electromechanical plant? PS Electric magician who is this some shaman from the African bush? (this is a technical forum)

jac0205 · Answer

Replacing the top heater solved the problem.

Amica Built-in Oven Tripping 25A Differential Fuse After an Hour of Operation: Fuse Issue?

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