Vacuum cleaner Electrolux ZSC69FD2 - Speed controller 2193995-10

Welcome,

I need to replace the potentiometer in the speed controller 2193995-10 (marked in the photo) in an Electrolux ZSC69FD2 hoover.
I have not found its designation anywhere so I am looking for information on what kind of potentiometer it is and whether I can get one somewhere.

Thank you in advance for your help,
Greetings

No markings underneath?

Hello,
Desolder and measure with an ohmmeter the resistance value between the two upper legs.

szycha82 wrote:

I need to replace the potentiometer in the speed controller

Hello.
Perhaps there would be more information, something like this: why do you claim that this potentiometer is damaged and needs to be replaced? (description of the fault).

szycha82 wrote:

I didn't find his mark anywhere

The picture is not very clear, maybe this one blue the frame is what you are looking for.
Best regards.

gumisie wrote:

Perhaps there would be more information, something like this: why do you claim that this potentiometer is damaged and needs to be replaced? (description of the fault).

When adjusting the speed, the engine did not even start - after treating the potentiometer, spray contact catches and gives different engine speeds - that's why it seems to me that the potentiometer is on the side.

gumisie wrote:

The picture is not very clear, maybe this one blue the frame is what you are looking for.
Best regards.

In the frame you write about is only a tiny logo and the inscription SPAIN.

szycha82 wrote:

When adjusting the speed, the engine did not even start - after treating the potentiometer, spray contact catches and gives different engine speeds - that's why it seems to me that the potentiometer is on the side.

Thanks for the answer. In this situation, do what your colleagues suggested:
1.

miecho18 wrote:

No markings underneath?

2.

maly_maly wrote:

Desolder and measure with an ohmmeter the resistance value between the two upper legs.

Best regards.

Probably 2.2M? or 4.7M?. What you find mechanically fitting, so good

Thanks for all the tips. For now I am away, I will do it after returning and write what exactly was the potentiometer.
best regards

No markings underneath.
I measured the upper 2 legs after desoldering and it is 21.52k?.
Any ideas where such a potentiometer will get or if it is impossible then maybe some alternative?
Thanks in advance

Buy a 22k? potentiometer.

The question is where to get one - I searched and I can't find one.
I measured it with a caliper and it's 14mmx14mm so it's ACP series CA14 and I can't find one.

szycha82 wrote:

I measured the upper 2 legs after desoldering and it is 21.52k?.

Then set the "slider" (3) of the potentiometer to the middle position and measure its resistance: 1 (upper left) - 3 (lower), 3 (lower) - 2 (upper right). To initially determine the efficiency of the potentiometer, connect the meter on this principle [(3 - 1), (3 - 2)] by turning the knob we observe the ohmmeter indications.

3-2 goes from 0.6k to 22.5k (but along the way has from time to time strange jumps to 30k 40k or OL)
3-1 goes from 21.59k to 0.7k (similarly as above there are breaks ")
I treated it with contact spray several times because before it was much worse.

Added after 17 [hours] 58 [minutes]:

I got this sprayed potentiometer on my contact and sprayed it for a long time - there is a big improvement.
The only thing is that now the adjustment knob from the vacuum cleaner works from the maximum down but the vacuum cleaner does not turn off - it's difficult, it works.
Thank you all for your help.

I suggest you visit the Czech forum link there is a diagram and some useful information on the subject presented. The system is controlled by the MC9S08QD4 series microcontroller / MQD4C replacement that is used in these vacuum cleaners.

.
Hello.
I have a similar problem and I'm curious if yours has been solved.
I wanted to return a friend's hoover to the office and decided to freshen it up a bit. I stripped it down to the bare plastics which I washed and dried. Once assembled, the hoover works at full power as soon as the plug is inserted into the 230 volt socket. The power regulator does not work in any position, i.e. in any position the motor runs at maximum speed. Turning it has no effect. Any advice? ZAM6250 Electrolux hoover. Before dismantling it, everything worked as it should. Well, not quite.

So, the regulator worked, it switched on the motor, increased/decreased its speed, but when working in the MAX position, for no apparent reason, it would reduce the speed to various values, as if someone had been playing gently with the knob, and only by physically intervening with it (with the knob) and setting it to the MAX position did it work at full speed, but the situation liked to repeat itself. In any case, it was switching the engine on and off, and now it was as if it (the regulator) was not there at all.

Hello.
In my vacuum cleaner this potentiometer also needs to be replaced and I am looking for one too. Please share information if you can find it.
Best regards.

I desoldered and cleaned the paths of the potentiometer with spray for electrical contacts. After mounting the engine runs but only in the MAX position and at full speed. In any other regulator the engine switches off. Let me remind you that before desoldering, the engine worked immediately to the maximum and turning the pot did nothing. Now at least turns on / off ... After desoldering I saw on the 20K housing. The meter shows on contacts 1-3 from zero to 20 K, on contacts 2-3 from 20 K to zero (or vice versa). And it looks quite smooth. And how should it be? Can further cleaning of the slider's paths (yes, after bending the plates and getting inside the sweat) restore the proper functioning of the regulator?

cocobongo wrote:

I desoldered and I cleaned the paths of the potentiometer with spray for electrical contacts .

And what else, maybe WD-40 ?.
As it is already: Contact PR and it is not known if it will work in this case.

MA Contact Cleaner.

Added after 7 [minutes]:

Another issue is the form of response. "Or maybe WD40?" It sounds a bit dismissive even if I used WD40. And we are here to help each other, not to point out weaknesses. Where is it said that only electronic graduates speak on the forum? Or maybe instead of trips about WD40 or other chemicals, some specific tip, link, address, for example, where such a pot can be bought new, or are all PCBs available for this model somewhere. Happy New Year!

cocobongo wrote:

Or maybe instead of trips about WD40 or other chemicals, a specific tip, link, address, e.g.

for example: link

I called Electrolux Polska internal 2 (parts). I gave the PNC number from the rating sticker and asked about the PCB for this model. I was sent back with catalog number 2193995533 to the site klinikaagd.pl. Lookup found this disc (commercial number KL691AA89) but it is out of stock and attempts to add it to the shopping cart were denied. Price PLN 100.90. I left an address asking for info when it is available. But for now ... there is none. I will be grateful for the indication whether you can and where to buy the 20K potentiometer alone (blue cube on the photo), because one hundred for such a piece of plastic (admittedly on the plate) is a bit overkill. Through the forum or at coco(_at_)boy.pl
Or maybe someone has a different idea to turn on the switch with the regulator and make it work as predicted by the manufacturer ...? Contact as above.

Added after 5 [minutes]:

Oh. After folding the regulator (again) does not turn on / off the engine, not to mention speed control ... The engine spins to the maximum, turning the knob gives nothing. This can only be turned off by disconnecting the cable from the 230 V network. But a vacuum cleaner! Story! Like new art, it is not rushed!

Added after 14 [minutes]:

Thanks for the link. I should have it somewhere in the basement. For now, I used what first appeared, i.e. the Contact Cleaner mentioned earlier. But I will search and try it because I see it is dedicated to potentiometers.

Added after 4 [hours] 53 [minutes]:

As an expert, but certainly not in the field of electronics, let me ask colleagues more oriented question. What will put a 20K potentiometer in the place of a pot with a lower resistance, e.g. 1 K or the other way - a larger 100 K? I found such mounting potentiometers, one-turn, lying, but unfortunately no 20 K. Hence my question. While prices for a tile with this pot start from PLN 100 up, while buying the minimum required quantity (5 pcs) I will pay with delivery of about PLN 15. And there will be four more to give or withdraw as a gift to colleagues interested here from the elektroda.pl forum. Only for reimbursement of the shipping cost, unless picked up in Warsaw.

Will you be buying from the Chinese? It seems to me that PT15 can fit and in this model they are worth 20k.

No. I found a shop / warehouse in Poland. Seems ok

Added after 2 [minutes]:

https://www.tme.eu/pl

In the attachment pdf I tried to present my case. That is, repairing the potentiometer, and thoroughly washing and adjustment. The condition before the repair was such that at first the vacuum cleaner "stopped" revolutions and then "fell silent" on amen. The recipe is taken from the cited Czech page - uC is MC9S08QD4 / 8-bit datasheet on the net / ...

Hello,
Here is a link to the whole regulator for 32,90 + shipping 9,99:
https://north.pl/promo/plytka-elektroniki-do-...iFEjW1CgFoTAvNo-DVcZYQF_nRg225M0aAgy-EALw_wcB
Greetings
.

look for CA14NV15-20KA2020CFFCG

I had a similar problem and generally repair without initialising this controller may not be successful for the reason that the controller is unprogrammed. .

So perform the following operations (from the post https://www.elektroda.pl/rtvforum/topic3376681.html#18463298):

First, with the hoover housing removed, set the minimum potentiometer value, i.e. short circuit to ground, plug the hoover into the socket - it will turn on at full power, turn the potentiometer to maximum and turn the hoover off - the whole action takes 3-5 seconds.

In this way the board is reset.
Once reset, set it on the hoover off, immediately after the reset.

Now put the housing in the knob position at max, the potentiometer is at max (the maximum deviation of the potentiometer is also the maximum power of the hoover),
insert the knob and pull it to the minimum corresponding to the hoover scale (neither more nor less - just the minimum).
And now we start the hoover.
Once the hoover is running and the electronics (softstart etc.) are initialised, everything works as it should.
If not, the electronics have to be reset again or there is still a fault.



In addition, this is also described on north.co.uk

https://north.pl/pdfart/2/713-ZX-0648,0,21939...ectroluxmodul-elektroniczny-do-odkurzacza.pdf

Any chance someone has extracted the firmware from the MCU? I did , but I just reverse engineered it out of curiosity and found out that there is some corruption. Unfortunately the device I extracted it from is long gone.

Update: Never mind, there is no corruption, it's just some data between instructions skipped at runtime by stack manipulation.