Baumatic BDF 683 SS Locking up

[Minetymenace]

Hi, newbie here, please be gentle.

I have a Baumatic (yes I know, Beaumatic :rolls: ) 683SS dishwasher that locks up at a certain part of any cycle. After the lock-up it defaults to the start of the 3in1 program. It hangs near the end of any program I select, near when I would expect it to drain the dishwasher (there is always water in the machine when it hangs). The start of all programs seems to be a drain cycle and it drains sucessfully at the beginning of all programs.)

Here we go: If I press the “^” and “v” at the same time while switching on, it apears to go into a test mode (all LEDs flashing), if I then press the far right button, it appears to go through 18 test steps (counting down), it fails in the 7th step (11 indicated on the LED) with an error code b7.

Any ideas anyone?

[kwatt]

Re: Baumatic BDF 683 SS Locking up

There is very little technical on that model and, the error you have isn’t detailed either. 🙁

Almsot all dishwashers will drain when switched on to clear the sump so that doesn’t help really.

K.

[Minetymenace]

Re: Baumatic BDF 683 SS Locking up

As there is little tech about this machine I thought I’d put up what I can see of the test mode (pressing the far right button advances the program to the next test)
Test 18 ?
Test 17 Long beep then machine fills
Test 16 Wash. Top bar only spinning
Test 15 Open soap tray
Test 14 Wash. Top bar only spinning
Test 13 ?
Test 12 ?
Test 11 Drain
no test 10 as my machine fails with error code b7. I think it fails test 10 rather than test 11.
Where I cannot see anything happening during the test I have put”?”, I guess these are things like heating element tests or what ever. Each test lasts about ten seconds.

The error code is curious, it is not the normal “E” number mentioned in the user manual, so what I realy need is the service manual with service fault codes or whatever.

What would be realy useful would be a description of each program (eg: fill, heat, spray, wait, spray, drain, fill, soap, heat, spray, drain, dry).

There are also a level sensors and one for detecting how dirty the water is in the sump. They look like optical sensors of some sort, curious to know how the feedback from these affects the function.

No info means that I am fast becomming the world expert on this model, but nowhere nearer to resolving the issue.

[lee8]

Re: Baumatic BDF 683 SS Locking up

Go get some petrol and some matches. When its finished burning you’ll have the fault wiped and it’ll probably work better.

Or you could do what all Baumatic employed engineers do and throw multiple parts at it and hope someone else gets to fit them.

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[Minetymenace]

Re: Baumatic BDF 683 SS Locking up

I’ve chosen to try and fault find raher than parts change. Looking at the cost of parts if you don’t identify the fault first time, it is not worth fixing as the cost of a new machine is about the same as a board and a sensor. I was kind of hoping that someone might know about these machines.

I have sourced a parts list and circuit diagram. I also have a copy/description of a BDS67x machine self test program which seems to work on this model too. It is similar to the procedure described earlier except the test numbers count up and I have a description of what the machine is supposed to be doing. I will let it run its course and report back, if anyone is interested…

[lee8]

Re: Baumatic BDF 683 SS Locking up

You missed my obvious point, there is a reason why people throw multi parts, the same reason your struggling.:idea:

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[Martin]

Re: Baumatic BDF 683 SS Locking up

Minetymenace wrote:I’ve chosen to try and fault find raher than parts change.

Good for you, so my advice would be to get stuck in and check each component in turn (ie Drain pump, inlet valve, heater, circulation pump, Turbidity sensor etc) in order to get to the possible solution. Relying on spurious and unreliable test cycles and error codes is not only misleading but generally of no use whatsoever. Get in there and check it out. All machines are fixable, some, like Baumatic, are extremely challenging to say the least (and beyond the ability of lee8 judging by his comments. 😉 ) so hang on in there and do let us know how you get on! 😀

[lee8]

Re: Baumatic BDF 683 SS Locking up

Life is too short to waste trying to solve a fault on a product that is so poorly designed and built with poor quality compnents, the exercise will be repeated many times.

Experience brings wisdom, enabling one to win all the battles one chooses and allowing the foolish to battle along with that inner voice of arrogance and determined resolve only to reach the blinding obvious conclusion , there is no point trying to polish a turd :lol:.

PS i’ve worked on Baumatics for Baumatic for a few yrs.;-)

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[Minetymenace]

Re: Baumatic BDF 683 SS Locking up

I cannot afford to bin a dishwasher just because there are better ones around. My time is my own and I cannot afford to buy a new one.

I have run the test cycle,I’d like to upload a scan of the instructions, but don’t know how or if I can on this forum (I don’t use photo bucket etc) so here is an abridged version:

To enter test mode:

Open door, press and hold “Rapid Prog” (far RH button) and turn on machine. Close door.

Initialization Display = 8.88 Turned on and ready

Water Inlet Display = 0A Valve open,3.6l of water (confirmed by water meter on my water softener)

Dispenser Display = 09 Wash pump and Dispenser on for 1min

Heating element Display = 08 Wash pump & heating element on until 60DegC

At this point you have to press “Rapid Prog” to advance to the next step (more of this later)

Drainage Display = 07 Drain pump for 1min

Pauses Display = 06 Pause for 15 secs

Inlet Valve Display = 05 3.6l of water (if your model has a fan it is tested here, if not Display = 99

Wash Pump Display = 04 Wash pump on for 3min.

1/2 Load valve Display = 03 Wash pump off 1/2 load valve for 3mins

Wash pump & 1/2 load valve Display = 02 as it says for 3 mins

Regen valve and drain pump Display = 01 as it says for 1min.

EOT Display = F0 End Of Test.

So all that passed the test, so I have made some assumptions (tell me if you think they are wrong and why please):
All the pumps, valves, flow meter and heater seem to work OK.

I notice that the tests are timed rather than cancelled by a sensor eg the drain cycle in the test runs for 1 minute.

Would it be safe to assume that when the machine is running, the drain cycle will be ended by the sensor saying that the machine was empty rather than a timer running out?

I see no level sensor on the diagram. The only sensor seems to be the Nephelometer (turbidity sensor). Interesting things these, they don’t measure the cloudiness, but the light reflected by the bits of muck. so something stuck on the sensor might confuse it. Do these go wrong? What is the failure mode? (I havn’t washed any motorbike bits in it for ages)

So my thinking at the moment is the muck sensor or the control board (the cost of these two is about the price of a new machine, so I need to narrow it down to one or the other).

Anyone got any ideas?

Thanks for the encouragement Martin, I need it!

I am training the lumpy front to use the machine in test mode, she can manualy time the wash cycle and determin how long it takes to seperate the spot welded dinner from the plates 😯

[Martin]

Re: Baumatic BDF 683 SS Locking up

The draining is timed rather than sensed. Turbidity sensors are forever an issue though they rarely fail electronically but rather the light channel gets so crudded up that the infra red device can’t see! Dishwashers used in hard water areas without salt cause big time Turbidity sensor problems. Also in Slough (Berkshire) so many curry vindaloos bring out a rash of problems for those that can afford a dishwasher.

Let’s hang on in there with this not only for your benefit but to help lee8 get over his problem with the challenging Baumatic brand. 😀

[lee8]

Re: Baumatic BDF 683 SS Locking up

The info available to Baumatic engineers is at best poor, Bau ships large amounts of junk at very low prices with no tech info, the only available is general guide that covers all. Hence the guess work. Hence the advice to walk away instead of spending money on parts you cannot verify are working.

But to give you some advice i’ve never replaced the parts you’ve mention apart from the PCB, which we all used to replace daily on all models, van stock had 12 different PCB’s, the other parts you mentioned where not van stocked.;-)

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