No spin on washing machine AEG L6FBA674

[stomanata]

Hi,
This washing machine has power module emc18aecn1 and programmer ewx14931 914913208.
It stop after electric shock.
When i choose only spin it show 12min remaining. After 1min it start drain pump, after
second it start relay (measured 12v ot relay`s coil) that deliver 230V to power module.
This is also ~1second and then pump and relay stop. After ~2min this repeat - pump,
after it relay and both stop.
There is no error.
Can somebody help me to try to fix it?

[CapLeaker]

Did you check the motor? Been known for the no spin cycle problem the brushes getting stuck or worn out and or the magnet is bad / broken that sits on the shaft.

[petehall347]

there is normally a service mode to test each thing .
check pressure sensor pipe . also check the pump filter and if the pump is free to turn .
what do you mean by electric shock. ?

[stomanata]

Thanks for reply.
Motor is welling yxt320-2e(l) - so it is without brushes. May be i can just
check resistance between every wire.
Washing machine was working excellent and stop after
electric shock - this is overvoltage or undervoltage for short time.
In most cases this is overvoltage and this is danger for electronics.

[stomanata]

Anybody to know how can i reset this machine?
I check a lot of clips in Youtube but all of them has
different look - display and buttons. It is Lavamat 6000 prosense

[petehall347]

see if this helps .
https://www.youtube.com/watch?v=V2OqiQFVnkc

[stomanata]

see if this helps .
https://www.youtube.com/watch?v=V2OqiQFVnkc

Thank you. I saw clip like this, but today i prefer to test even that display
is different than my.
It goes in some kind of service mode and show me E57.
As i read this is problem in inverter. Error meaning is "too high current at motor"
Try again to press both buttons to clear code, but no luck - it stay at E57

[petehall347]

is the drum free to turn ?

[stomanata]

is the drum free to turn ?

Yes. Washing machine was in very good condition until electric shock (overvoltage).

[CapLeaker]

Try selecting a wash program and see if the drum turns. If not give the motor some help by spinning the drum with your hand. If it keeps spinning after you helped it, it's the motor control board. You could be in for a motor, a motor control board, or both. Also look at the Electrolux service manual. Probably not the same, but should give you an idea.

[stomanata]

No luck with helping the drum. Now i have only E57 - may be motor current over 15A (as read over internet).
I delete it, it display E00, but again no start.
Motor is Welling YXT320-2E(L) and it has only 4 wire socket. This 4 wires came from inverter. 1 wire is connected
to motor ground and other 3 wires (3-phases) goes to the motor. Even i did not see tacho.
Between 3 wires i have 7.2-8ohm resistance, and no resistance to ground.
So may be it is inverter problem/fault...

[R_J]

The fault is likely with the motor driver ic on the inverter board, this will be a 3-phase motor driver, from other pictures it looks like the ic would need to be removed from the circuit board to see any numbers, it may be that the vcc voltages for the other ic's on that board may be missing.

[stomanata]

Thanks. Do you mean biggest IC - may be that produce 3 phases?
On top board i have choke, bridge, capacitor and 1 small IC. So there i have 310V= and 16V=.
On other PCB there is 1 big IC and other. I try to check all smd transistor and they are OK.
May be when i see biggest IC number i can find option to test it...

[stomanata]

biggest IC is GIF5CH60TS-X. Over internet most sites offer GIF5CH60TS-L.
Do you know can i check it if i apply only 230V~ on inverter, without programmer
and to measure some voltages or other?

[CapLeaker]

Thanks. Do you mean biggest IC - may be that produce 3 phases?
On top board i have choke, bridge, capacitor and 1 small IC. So there i have 310V= and 16V=.
On other PCB there is 1 big IC and other. I try to check all smd transistor and they are OK.
May be when i see biggest IC number i can find option to test it...

Here is the spec sheet of the driver IC. Read it and pay attention to the fault management, The output to the motor starts here and the over current problem is between this IC and the motor itself. Also notice that there is a NTC involved, Probe around and maybe you A find a short or B its going into some sort of protection mode for one reason or other.

[stomanata]

Thank you.
I desolder gif5ch60ts-x and start to measure and found
short circiut between #20 and #23. I hope that this is
whole problem.
#18, #19 and #20 on PCB are grounded and #23 I
third phase output to motor.
Btw over internet I found gif5ch60ts-L instead gif5ch60ts-x.
In datasheet is not labaled what is the meaning of every
letter, but I hope that they are the same.

[redwire]

It's good you found something wrong, the shorted IGBT.
"L" is long leads. Difference between STGIF5CH60TS-X and STGIF5CH60TS-L, that I find is the length of the pins:
SDIP2F-26L type L package 14mm (C2)
SDIP2F-26L type X package 11.70mm (C2)

I guess extra 2.3mm leaves more room for IC to sit up high and more room for heatsink and screws.

[stomanata]

Thank you. It is not problem. Over PCB there is PVC plate and this IC goest into it. So extra length will be
on opposite side of PCB and i can cut them.
I`ll purchase from somewhere, because there is no bulgarian firm that offer it.
Hope that this will be the only problem for whole washing machine.