SMA Indesit control unit - do-it-yourself repair

SMA Indesit control unit - do-it-yourself repair

All the buttons on the Indesit washing machine flashed

To begin with, I want to warn you that I only provide proven material; the breakdown that will be discussed in this article can be easily fixed by replacing several containers. If in your case this did not help or you have other problems with the control module, I am unlikely to be able to help you. The fact is that the brains of a washing machine are a rather complex part, and even if you see that some diode or resistor has burned out, this does not mean that replacing it will make the unit work. The failure of one part often leads to a problem with other components, so before you rush into the module, think carefully about whether you have the skills that are needed for this procedure or not, because this spare part costs a lot of money. Next I will speak in question-answer language, those who follow my blog remember that there was a forum on it and this article was written based on one of the topics of this forum

The essence of the problem is that I have an Indesit washing machine and for no reason at all the display panel on it blinks, that is, the lights above the buttons blink quickly, quickly, like color music. I looked in the instructions, there’s nothing like that, I went through all the error codes and couldn’t find anything.

Apparently, the power supply in your washing machine, or more precisely in the control unit, has failed. Remove the control unit, if you have a horizontal-loading washing machine, then it is located in the lower left corner of your SMA, when viewed from behind, in the vertical lines at the top under the control panel. You will need to remove the module from the plastic box and inspect the containers for swelling. I think this will help you. Good luck

Thanks for the advice, I'll try it now. I removed the board, it was quite difficult, I had to unscrew the hatch at the back of the washing machine, it is attached with six screws and tried to get it out, but nothing worked, I couldn’t disconnect the wires. As a result, I put the machine on its side, on the side where the powder is poured, although the floor was flooded with water, I had to first drain the water from the washing machine. In short, when I put it on its side, it was only then that I easily disconnected the wires. I wrote this to those who will remove the control module themselves. I just pulled the board out of the box and, in fact, two of the containers were swollen, now I’ll remove them from the receiver and solder them here. I think I'll post the results in an hour.

Fast guy, I didn’t even have time to say “A”, but he had already dismantled the washing machine. Be careful not to confuse the polarity on these capacitors; it often happens that out of ignorance people install them in vain, and as a result the display panel may burn out. be careful

Strike iron without leaving the site. Hooray, it worked, the washing machine washes like a sweetie. I wonder how much money I saved. Thank you for your work, I don’t know how to thank you, I just say thank you

I am very glad that what I advised helped you. After this article was published, a washing machine came into my workshop with a similar problem; all the display buttons on the control panel were also blinking. The video I made can be seen below.

Video about what causes the buttons on the control panel of the Indesit washing machine to blink

In addition, I would like to clarify some things about the capacitance and voltage of the capacitors that need to be changed. The fact is that these capacitors are designed to dampen the pulse, so it is undesirable to set other values, that is, if the capacitance is 680 μF, then you must set the same one, but the voltage can be increased, for example, set to 16 volts and 680 μF. Don't forget about polarity, it's very important. Next, let's look at another example of such a repair, although it turned out to be unsuccessful, as the processor burned out

Why the Indesit washing machine does not turn on

This topic was also taken from the form that was on my website. The essence of the problem was that the owner of the Indesit washing machine connected the ground wire to one of the terminals of the heating element, the result was what you will read about in this paragraph

Hello, help me repair the control module of the Indesit wisl washing machine, control unit 215009152.02. According to the owner, the heating element was not connected correctly, as a result of which the relay leg k5, inductor l1, resistors and varistors were normal. The tny264 and uln2003 PWMs were replaced, as well as the mains and secondary capacitors. The result is a surge in voltage from 0 to 6 instead of 12 volts and from 0 to 2 instead of 5 volts. I changed everything in the harness, the result was the same. Is it possible to have a short circuit in the transformer? I found a diagram of the power supply, maybe you can advise

Judging by the diagram, I assume that you are torturing the EVO-II board. I didn’t understand how it was possible to connect the heating element incorrectly; if it threw a phase onto the body, then most likely there was a short circuit, and the result may well be that the microcircuit was pierced. How the control panel behaves, what blinks. Why did they change uln2003, was it clearly broken or is this just your guess. It is not advisable to check the transformer on the board; it is better to remove it and check it. A short circuit on the transformer is quite possible, but it behaves differently; there would hardly be any pulses. This behavior is more like a broken diode, zener diode, capacitor or transistor, and also - the PWM is definitely working. Did you take measurements from the transformer? And if so, then you need to dig the chain to it. In short, there could be a lot of reasons. From personal experience, in such cases, I first of all check the parts that I indicated in the photo, their denominations under the photo, then unsolder the uln2003 and check without it, then depending on the circumstances. And write about the result

Zener diode = 4.35V, SMD capacitance 0.1 µF, but I don’t know the voltage, I take it from other boards, I don’t remember the transistor value either - again, I’m taking it from another module, as there was no need to look

Yes, there was exactly a phase on the case, nothing works on the display unit, because there is no constant voltage of 12 volts, uln2003 changed all the relays clicked in time, short circuit on all legs, the whole memory is readable and sewn. All measurements were made with a load, the 12V light flashes in time, the capacity when measuring is 280 volts without ripple, I removed all the triacs, varistors and relays, there is a bare power supply at the output, not counting the ulnka, so as not to break the 12 V, without it, the same thing at 5 volts. I’m not sure about the transistor, is it an analogue for bc817? And where is the p6ke diode located on the diagram?

An analogue of a transistor, you need to look on the Internet, but in general I have a lot of junk, I remove it from dead boards, and where the diode is located - I won’t tell you at face value, but in general it looks like there really is a short circuit somewhere. Try the transformer, maybe there really is a short circuit on it, although usually there is pulsation, it doesn’t look like it. Something here smacks of a processor failure, and why is there a ripple coming from the transformer without holding the board in your hands? It’s difficult to advise anything. Try changing the zener diode with the transistor

I figured out the diode, d9 according to the diagram, I changed the zener diode, unfortunately I can’t select a transistor from what I have

Without him, there is simply no point in continuing to drip, it is quite possible that he may be lying.

I completely removed T1, same thing.

Master. Remove the transformer, but in general I already wrote that it looks like the microcircuit has been punctured. After such a blow to the brain, it’s rare that they survive, and it turns out that the phase almost directly hits the mikruhu. Today they brought Indesit to me with the same problem, the heating element exploded, the owner called the repairman, he said that the module was dead. The rest of the story is this: the client decided to do the repairs himself, changed the heating element and the control module, in short, he says that it’s the same garbage again, that nothing works and nothing burns. I took off the back cover, and there the ground was connected to the heating element, but I didn’t look at what kind of board it was (Arcadia or EVO-2), I was in a hurry. On Tuesday I'll throw it on the stand, maybe I'll dig up something there, the breakdown is basically identical. But I think that I will have to change the microcontroller or the entire module. In general, I'll watch it on Tuesday

I replaced the t1 with kt3102b, the power supply started working after removing the microprocessor. Brain dead, topic closed

In principle, this is to be expected

Control module 254297 washing machines Ariston/Indesit

This list of models may not be complete; if your model is not on the list, this does not mean that this part is not suitable, please contact our managers.

Enter your vehicle model to check compatibility with the spare part:

Ariston/Indesit:

• AR103EU
• AR103IT
• AR61EU
• AR63IT
• AR6F105CN
• AR6F105EX
• AR6F85EX
• AR6L105EX
• AR6L105EX60HZ
• AR6L125EX
• AR6L65EX
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• AR6L65KW
• AR6L85AG
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• AR7F105AG
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• AR7L125EX
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• AR7L85AG
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• AR7L85EX.C
• AR7L85SEX
• AR83EU
• AR83IT
• ARF105AUS
• ARGF125EU.R
• ARGF125FR.R
• ARGL105EU.R
• ARL100CSI.L
• ARL105EU
• ARL105TK
• ARL125FR
• ARL145FR
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• ARL95CSI.L
• ARS68IT
• ARSF100CSI.L
• ARSF1050CIS
• ARSF105CSI.L
• ARSF125CIS
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• ARSF125FR
• ARSF80CSI.L
• ARSF85EU
• ARSL100CSI.L
• ARSL1050CIS
• ARSL105CSI.L
• ARSL105EU
• ARSL105EU.T
• ARSL108IT
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• ARTF1047RU
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• ARXXL105EU
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• AWM108EU
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• HVF344UK
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• LBE68ALL
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• SIXL146EU
• SIXL146SEU
• WF000P
• WF100P/SC
• WF100P/WE
• WF101P
• WF321P
• WF325A/SC
• WF325A/WE
• WF326A
• WF340P/SC
• WF340P/WE
• WF445A
• WF530P/SC
• WF530P/WE
• WF541P
• WF720P/SC
• WF720P/WE
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• WIAL143EU
• WIDL126UK
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• WIL12NL
• WIL133UK
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• WIL140BDE
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• WIL153UK
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• WIL62AUS
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• WIL62XEX
• WIL63PL
• WIL63PLTE
• WIL66IT
• WIL81TK
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• WIL95KW
• WILB12EU
• WILM64IT
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• WISE107EXV
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• WISE10CSI
• WISE127EXV
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• WISE12CSI
• WISE87EU
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• WISE87PL
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• WISE8CSI
• WISL1000OTEU
• WISL1000OTEUV
• WISL102CSI
• WISL103CSI
• WISL105CSI
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• WISL105PL
• WISL105PLV
• WISL105SLCS
• WISL105XEX
• WISL106IT
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• WISL10FR
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• WISL125DE
• WISL125DEV
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• WISL62CSI
• WISL62EXV
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• WISL65PL
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• WISL66IT
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• WISL82CSI
• WISL83CSI
• WISL85CSI
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• WISL85PL
• WISL85PLPW
• WISL85SLCS
• WISL85XEX
• WISL86IT
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• WISL92CSI
• WISXE10CIS
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• WITE107EU
• WITE110FR
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• WITE877RU
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• WITL62EU
• WITL66IT
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• WITL90EU
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• WITP102EU
• WITP103IT
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• WITXE1077RU
• WIUE10CSI
• WIUL103CSI
• WIUL83CSI
• WIXE107EX
• WIXE10CSI
• WIXE127DE
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• WIXE127SDE
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• WIXE13FRV
• WIXE147DE
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• WIXE14FR.1
• WIXE167DE
• WIXE167UK
• WIXE8CSI
• WIXL101TK
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• WIXL105DE
• WIXL105ES
• WIXL105EU
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• WIXL105EX60HZ
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• WIXL106EU
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• WIXL106ITV
• WIXL115EU
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• WIXL123SUK.1
• WIXL123UK
• WIXL124NL
• WIXL125AUS
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• WIXL125IRAN
• WIXL125SEU
• WIXL126IT
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• WIXL12FR
• WIXL12FRTE
• WIXL135EU
• WIXL143UK
• WIXL145DE
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• WIXL163SUK
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• WIXL16NL
• WIXL84EX
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• WIXL85PL
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• WIXL86IT
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• WIXXE110FR
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• WIXXE147SUK
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• WIXXL86EU
• WIXXL86EU.1
• WMD740PUK.R
• WMF520PUK.R
• WMF540PUK.C
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• WML520PUK.C
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• WML520PUK.R
• WML540PUK.C
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• WML540PUK.R
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• WML730PUK.R
• WT400UK
• WT540/1P
• WT640GUK
• WT741/2G
• WT741/2P
• WT940/1PUK

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