[Solved] Bosch WAS 28743 PL / 01 washing machine - error F57 engine does not work

Hello,
I have a problem with the washing machine as in the topic. During washing, probably right at the very end, because the laundry was rinsed, the F57 code was displayed and the sound signal was displayed, the drum stopped and the door could not be opened in a normal way, but it was possible in an emergency. Now the washing machine behaves identically on each program after closing the door, the lock works properly, it locks and then the water pump starts and the alarm signal with the F57 code is activated. Opening the door works only in emergency.

I read that this code could mean damage to the motor circuit. Can the engine be checked somehow? I removed the engine module and after careful inspection, no damage is visible, the connections of the connectors are also ok. Attached are photos of the module with the removed heat sink. I am asking for any suggestions. Thank you in advance

Remove and check the engine.

Ok. How to do it yourself?

Remove the motor from the washing machine and check:
- whether the brushes are too short and whether the lice are no longer going on the commutator
- if the bearings do not have any noticeable play (rather there should not be any
- whether the winding of the speed and direction of rotation sensor is open

Aj! He's actually cracking me off! This is not a commutator motor, I should notice it after the outputs from the driver.

Oh, I think this motor has no brushes, but maybe I'm wrong.

Exactly the motor is brushless and has 3 connectors.

then the water pump starts up and the alarm signal with the F57 code

Maybe here is the answer, check the dirty water drain pump not only for blockage but also for the continuity of the winding, or you can give it a direct power supply from the outside. By the way, also check with a multimeter what it shows on these three motor connectors in different configurations, you may have to try to give it power directly. With the module on the table, check also if the relay contacts are not shorted.

Moderated By mrhari:

3.1.11. Don't post messages that add nothing to the discussion. They are misleading, dangerous or do not solve the user's problem.

wiesiekmisiek - man you don't know, don't advise stupid things. This motor is controlled by the inverter and there is probably a problem in it

Well, I was able to find - unfortunately the F57 error is a failure of the inverter.

After all, on these legs of a large system, like a bull, you can see a cold February soldering system and it may work.

I have a request for the owner of the washing machine - can you please post some photos of the washing machine's motor here?

I will replace the founder of the post. Here you can see Kol. Magir carefully
https://north.pl/karta/silnik-napedowy-do-pralki-bosch-was28743pl-01,KYZ-AL-CMM1-A6W.html

wiesiekmisiek wrote:

By the way, also check with a multimeter what it shows on these three motor connectors in different configurations, you may have to try to give it power directly.

Buddy - don't mislead people! You don't even know what you're writing about. This motor is powered by 3 phases from the inverter module and each "giving it power" will only end badly for the author of the topic!

h jaworski wrote:

After all, on these legs of a large system, like a bull, you can see a cold February soldering system and it may work.

There is a specific answer here and the author should do so.

Washing machine motor module damaged, replace with a new one.