Bosch Classixx 6 1400 – Not spinning (F:21 error & 1min)

[wideawakewesley]

Hi,

I’m trying to investigate a fault with my Bosch Classixx 6 1400. The first sign of any problem was an F:21 error, which seems to related to a motor or PCB fault. Having cleared the error, it seems the washer is also failing to spin (not even partially). When placed directly into a spin cycle the machine ticks occasionally while the timer shows 12mins, but shortly afterwards the timer drops to 1min and sits there.

Although I’ve done some repairs on a tumble dryer, I’ve never attempted anything on a Washing Machine and have limited time and skill. I’ve opened it up, checked the belt is ok and put the machine on it’s side to get a look at the motor, but from it’s position inside the washer it looks like you’d have to disassemble the whole thing to get it off.

Looking at the prices of motors online it looks like it would be cheaper to ditch the washer and buy a new one, although I’ve no idea how much repairs cost etc. I hate the idea of buying if I can repair for considerably cheaper, but going without a washer for an extended period is a no go.

Any advice would be welcome.

[Muv]

Re: Bosch Classixx 6 1400 – Not spinning (F:21 error & 1min)

Motor brushes are more than likely worn.
Remove rear panel,you will then see the motor mounting bolts x2
Remove these then just put them back in a few turns, this will stop the motor from dropping out when you attempt to slide it forward off its mounts ,once it is loose. Remove the bolts and lower motor to the floor..
Remove the multi connector and also the earth lead. ..
Then it’s just a matter of checking the brushes for wear.
Brushes can be a bit fiddly to remove
You have to pull off the connecting
Lead, then slide the brass plate to one side till it disengages and just lift out of the holder… Anything less than quarter of an inch in length then they need replacing.

Martin

Sent from my iPhone using Tapatalk

[wideawakewesley]

Re: Bosch Classixx 6 1400 – Not spinning (F:21 error & 1min)

Cheers Martin, getting the motor off was easier than I expected. Didn’t realise there was a piece of the rear panel you could remove. The brushes are indeed worn, so I’m going to purchase some new ones and give them a go. Will report back. Thanks!

[Muv]

Re: Bosch Classixx 6 1400 – Not spinning (F:21 error & 1min)

When you have renewed the brushes,spin the motor by hand,if you hear any sort of clicking noise,then one of the brushes is installed the wrong way round,.

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[wideawakewesley]

Re: Bosch Classixx 6 1400 – Not spinning (F:21 error & 1min)

Hi Martin,

My local parts supplier recommended I buy Bosch brushes which are more expensive than unbranded as they claim that the carbon on some brushes can get into the motor on Bosch’s specifically and cause damage. They have some for £36 in stock, but I see generic ones here and elsewhere for about £10. The ones here even specify they use the same grade of carbon. Any thoughts on that?

Wes

[Andy jones]

Re: Bosch Classixx 6 1400 – Not spinning (F:21 error & 1min)

If you go for pattern ones make sure they slide in and out easily

[lerch]

Re: Bosch Classixx 6 1400 – Not spinning (F:21 error & 1min)

Stuck on 1 minute is normally the heater

[wideawakewesley]

Re: Bosch Classixx 6 1400 – Not spinning (F:21 error & 1min)

Thanks for the help so far, looks like I could use some more. Story so far…

1. Bought and fitted new official Bosch carbon brushes. For my model, the brushes are actually longer than normal.
2. Did a test spin. Everything was ok.
3. First wash. Everything was ok.
4. 2nd wash failed with F:21 error.
5. Tried a machine spin. Failed.
6. Opened up the machine. Motor looks ok, manual spin from rear and inside drum seem ok.
7. Tried a machine spin. Started ok, but failed before it got up to speed. During the slow part of the spin, a strange almost constant ticking like sound was coming from the motor.

Haven’t been able to get it to do anything since. Any ideas?

[Muv]

Re: Bosch Classixx 6 1400 – Not spinning (F:21 error & 1min)

A small amount of clicking with new brushes is normal, until they bed themselves in, but it sounds as thought you may have not fitted them correctly maybe?
I would take the motor out and check that the whole surface of the brush is in contact with the armature, and not just the tip of them..
And also that the brushes when installed correctly are pushed in to the holder, ther mistny be any resistance, as this may cause the symtoms you describe, as in one brush may have just lost contact with the armature due to it not being free to move agains the spring pressure..
Is the machine showing any error codes or flashing lights?

Martin

[wideawakewesley]

Re: Bosch Classixx 6 1400 – Not spinning (F:21 error & 1min)

Muv wrote:A small amount of clicking with new brushes is normal, until they bed themselves in, but it sounds as thought you may have not fitted them correctly maybe?
I would take the motor out and check that the whole surface of the brush is in contact with the armature, and not just the tip of them..
And also that the brushes when installed correctly are pushed in to the holder, ther mistny be any resistance, as this may cause the symtoms you describe, as in one brush may have just lost contact with the armature due to it not being free to move agains the spring pressure..
Is the machine showing any error codes or flashing lights?

Martin

These particular brushes were longer than normal and the springs were pretty much fully compressed when I had the brushes locked in place. It seemed VERY tight to me, but this is the first time I’ve ever done this.

The only error code I’ve had was F:21 and since that one instance (post-refit) there’s no spinning at all. I’ll take the motor off again and check the brushes.

When you say no resistance, I assume the brushes shouldn’t be fitted very tightly against the armature as I’m describing these are?

[Andy jones]

Re: Bosch Classixx 6 1400 – Not spinning (F:21 error & 1min)

The carbon part of the brush should slide up and down easily before fitting spring. If not there will not be a decent contact with the armature

[wideawakewesley]

Re: Bosch Classixx 6 1400 – Not spinning (F:21 error & 1min)

Andy jones wrote:The carbon part of the brush should slide up and down easily before fitting spring. If not there will not be a decent contact with the armature

Hi Andy,

Not sure what you mean when you say up and down? They only appear to slide in and out of the slot they’re inserted into to make contact with the armature.

The carbon piece fitted into that slot ok, but I had to really cram the spring in behind it to the point where all the coils we so tightly bunched there were no gaps between them once the clip was inserted to hold them in place.

[Martin]

Bosch Classixx 6 1400 – Not spinning (F:21 error & 1min)

You’ve bought the wrong brushes. The long ones are for a later model.

The higher resistance of the longer brush will allow the microprocessor to go AWOL.

[wideawakewesley]

Re: Bosch Classixx 6 1400 – Not spinning (F:21 error & 1min)

Martin wrote:You’ve bought the wrong brushes. The long ones are for a later model.

The higher resistance of the longer brush will allow the microprocessor to go AWOL.

I will be complaining at the local shop tomorrow then. Any chance I’ve done permanent damage?

[Martin]

Re: Bosch Classixx 6 1400 – Not spinning (F:21 error & 1min)

wideawakewesley wrote:I will be complaining at the local shop tomorrow then. Any chance I’ve done permanent damage?

What is the full model number of your machine and what was the part number of the genuine brushes your local shop supplied?

[Author]

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