Bosch Logixx7 washing machine

[bruce kez]

Hi All,
I have a problem with my Bosch Logixx7 washing machine,

It Flashes START/PAUSE & 400/SPIN/END at the same time together with a peeping sound.

I have replaced the motor brushes & fitted a new drain pump.

Any help greatly appreciated
Kez

[electrofix]

where the brushes worn down to nothing ?

Dave

[bruce kez]

Hi Dave,
No the brushes were around 1/2″ lomg.
Thanks Dave

[electrofix]

was this the original problem or has it changed since you fitted parts ?

Dave

[bruce kez]

no this was the original problem.
nothing has changed since fitting the parts
Roger

[electrofix]

well Bosch fault codes are hard to get

next thing i would check is the thermistor

how does the fault present

turn on fault there
or
turn on set programme and fault only there after pressing start

does the door lock ?

Dave

[bruce kez]

where do i find the thermistor & how do i check it?

start a program the door locks & machine washes (quite violently) but wont spin thats when fault code arrives.

Roger

[electrofix]

Ah you may have something

would you say it tries to go into spin while full of water. Is it that violent ?

Dave

[bruce kez]

when washing the drum is not rotating fully & it is violent, the water is pumped out but it will not go into spin. thats when lights flash but the pump is constantly running.

Roger

[electrofix]

that sounds like the tacho on the motor is not feeding back to the timer

you would need to test the motor tacho output is there

the tacho is a spinning magnet in the motor that turns in a coil. this generates a small ac voltage that feeds back to the board. if this voltage is not there the module assumes the motor is stationary and accelerates it

am thinking the magnet may have split which is part of the motor

Dave

[bruce kez]

Hi,
turn the machine on to any wash program, door doesnt lock & 800/LOCK/SPIN all flash & deep…. nothing else happens!
getting desperate now, my wife isnt happy!
thanks in advance.
Roger

[electrofix]

well i assume from what your saying that before it would start and run violently but now it wont run

sounds like it needs resetting and there is a safety lockout on motor problems. It wont cure the original problem but it will get it going again

you can search for bosch resets and see what you find. would need to see control panel to try to guess which proceedure may work

Dave

[bruce kez]

I have done the reset.
when you select any program it now locks the door, fills with water but does nothing else. You can hear the control panel clicking but nothing happens.
thanks Roger

[electrofix]

thats means its a motor fault of some kind

still think the voilent movements are the start of it
its possible its blown a circuit board track through high current flowing when the motor was speeding

to go from here depends on the tools you have and skill level

Dave

[bruce kez]

iam an engineer by trade with plenty to tools, so skill level isnt a problem.
Do you think the motor needs replacing or repairing?
Thanks
Roger

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