[Toothbrushes]

Re: BOSCH WFP 3300 FAULT CODE F05

The nearest mine was to anything on the Brush/Commutator Wear Guide website was “grooving” but instead of two grooves as shown in the picture I had just the one. My feeling is that the commutator is designed to last roughly as long as the brushes. Brush replacement is worth a try because it’s cheap but don’t expect them to last and use the time to save for a new machine.

[Toothbrushes]

Re: SGS0902GB/04 “Not started”

Thanks Penguin. I don’t think the metal loop is at fault as “Not started” comes up as soon as the power button is depressed with the door open. To me it appears that the machine thinks that a programme has been selected even though I don’t get the chance and is waiting for the door to close.
I have tried pushing the latch to the closed position with the door open and it makes no difference.

[Toothbrushes]

Re: Bosch SGS 0902GB/04 will not turn on

I think I may have the same or similar problem.

I have had occasional problems with the machine not working and needing a small tilt to get going but now it won’t start. The display comes up with “not started yet” on the front display when the power button is depressed and when it is released the main menu briefly flashes up on the top display. I suspected the switch and took it out and tested it but it is fine. All other connectors are secure.

I fear I may need a new control module but any other ideas?

Part number 269978
Substitute 484322
Description Module-control
Price 148.01 GBP

[Toothbrushes]

I decided to order a new machine. Rather than risk £200 for the motor I have gone for a new LG for £370 with a five year guarantee.

Thanks for all your advice.
PS
Anyone want a well used but good WFP3300 (minus motor) for free?

[Toothbrushes]

I’ve had a close look and I think the commutator is worn. The segments aren’t raised but three or four are showing signs of wear on their edges so instead of a nice straight gap of about 0.5mm some go in about 1-2mm in the middle. The whole commutator is also shaped slightly to match the profile of a brush.

Curiously I tried replacing a brush that had worn right down with an old one that still had about a third of it’s life left but I still got F05.

I think my options are pay £200+ for a motor or get a new machine.

[Toothbrushes]

The commutator was fine and span smooth. The only thing I missed was to clean it up with emery cloth but it wasn’t that bad. I’ll check the commutator anyway.

My guess was if a connection somewhere that was HR could be the cause of premature wear.

[Toothbrushes]

The replacement brushes wore down very quickly so I bought the complete unit from Bosch (496875) in October. I am now getting the F05 error yet again.
Something is wearing out the brushes too quick. I have also noticed slight interference to the radio & digital TV when on the spin cycle.
Any thoughts?

[Toothbrushes]

Re: BOSCH WFP 3300 FAULT CODE F05

“special terminals to eliminate the need for soldering in to the carbon shield”

The special terminal is the slide-on/spade arrangement that I mentioned before. Spade shaped edge connector might be a better description.
From the quote it sounds as though the braid on the old brushes are soldererd and as there is no connector to push the “special terminal” onto that means pushing it onto the braid is the only way to do it.

They work fine but it does look a bit of a bodge which made me think I was doing it wrong. I might leave it and if they give me problems then I will order the full Bosch part.

[Toothbrushes]

Re: BOSCH WFP 3300 FAULT CODE F05

Brushes quickly delivered and are now fitted.

The fault was down to the brushes so thanks for being persistent with me. I was reading 4.6 Ohms. There must be a resistance detection circuit to monitor the wear of the brushes.

The brushes supplied are a perfect fit however the wire tail is different. I’m not sure what the new connector is called but it is a kind of slide-on/spade arrangement with an insulated tail. The original is a bare copper braid that is stamped/soldered/brazed(?) onto a busbar embeded in plastic (probably Bosch part 096809). What I have had to do is cut off the old brushes and slide the new connector over a doubled up piece of braiding. I can’t see any other way of making the connection and I fear that it will only be a matter of time before the connection fails so I will probably order Bosch part 496875 in readiness.

Any suggestions for a better method of fitting?

[Toothbrushes]

Re: BOSCH WFP 3300 FAULT CODE F05

I’ve ordered the brushes and will post the results.

The picture of the part on BSH (096809) looks identical to mine so I agree they should be correct.

Fingers crossed!

[Toothbrushes]

Re: BOSCH WFP 3300 FAULT CODE F05

OK I’m going to try new brushes.

The brushes are marked 1200.
The motor has the following numbers on it in various places:
151.60003.26
137.01.61/II
M1
129.19.193
135 15A

Part BS12102 looks similar and has WFP3300GB/01 listed against it. Is this the part I need? I’m a bit worried as the part number doesn’t match.
http://www.ukwhitegoods.co.uk/modules.p … cts_id=422

[Toothbrushes]

Re: BOSCH WFP 3300 FAULT CODE F05

The spring tweaking was never intended to be a repair. It was just a way of proving if the brushes were the cause of the F05 code and it looks as though they were not as I have proved good connectivity with the commutator.
Any idea of what the fault could be? Is it possible that even with a good connection the brushes are the cause?

If I get the fault fixed I intend to replace the brushes at the same time.

The tweak consisted of very slightly straightening the end of the spring where it pushes on the heavily worn brush. If you were to compare the tweaked & untweaked springs I doubt that you could spot the difference unless it was pointed out. It is <0.5mm which should be enough to turn the motor briefly but not enough to cause harm.

[Toothbrushes]

Re: BOSCH WFP 3300 FAULT CODE F05

I didn’t want to wait for brushes while the fault lay elsewhere. The spring tweaking was very mild (<0.5mm) and was just a way of checking if it was the brushes at fault. I might not be an expert but I know enough to not trash the motor. I wish I had checked the resistance before and after.
As the fault didn’t change I suspect that another part is at fault but which one? I don’t know what resistance the coils should have but 3 Ohms is not open circuit and is probably too high for a short. A short would also probably smell and trip a breaker.

[Toothbrushes]

Re: BOSCH WFP 3300 FAULT CODE F05

I’ve got the same error.

I pulled the motor apart and have noticed that the one brush has almost had it. I tweaked the spring to get a bit more life out of it and cleaned up the commutator. I had expected the motor to work for at least a few seconds but nothing.

Then I checked the resistance of the coils (nearly 3 Ohms) and continuity through the brushes. I then checked the resistance from the far end of the wiring loom and still had 3 Ohms. This to me indicates that the wiring, connectors and brushes are all probably OK but it still doesn’t work.

Any ideas? Is just under 3 Ohms a good reading?

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