Siemens SE24A230GB/17 Sequence

[AlbertHenry]

Hi all, I have got one of these dishwashers and have had no problems with it up to now, ( Date code FD8309 ) Ser No 000181. I am now getting washing issues, have cleaned all the fill pipes to the sump and float chambers ect on the left hand side of the machine.
What determines the water level in the machine, the yellow pressure chamber with diaphragm and blue lever does not seem to operate in relation to the water level, should it ?
What causes the circ pump to start as at the moment it starts before the water inlet flow stops !!!!!
I am interested in the flow diverter in the circ pump unit, does anyone out there know of the operational sequence of this machine as in: set program and switch on it then fills then circ pump operates, heater comes on ect ect.
Any info would be of great help.

Thanks

[Penguin45]

Re: Siemens SE24A230GB/17 Sequence

What is the actual problem, Albert? Your description does not describe a fault.

The motor will start after a set period of time or the first contact on the pressure switch, depending on the model.

Penguin45.

[AlbertHenry]

Re: Siemens SE24A230GB/17 Sequence

Penguin45 wrote:What is the actual problem, Albert? Your description does not describe a fault.

The motor will start after a set period of time or the first contact on the pressure switch, depending on the model.

Penguin45.

Thanks for the reply Penguin45, Getting dirty glasses and bowels now and then, have cleaned all the usual bits behind left hand side panel and the flexy fill pipe to the sump.
In watching the filling sequence, the circ pump starts before filling has completed ( what starts this )
Also the fill sometimes stops before the pressure switch has operated ( the yellow one by the red flood float behind the left side panel ) is there any other pressure switches somewhere else ?
I have not removed the base from the top cabinet yet !!
I have checked the diverter in the sump it looks to be clean and the disc is white it does change position from lower arm to top arm ( but I do not know how frequently this should change back and forth ? )

The reason I asked for the operational sequence is so I can watch it through a cycle and prove it is doing what it should be doing at each point.
Worked for 10 years as a service engineer for Southern Electric but that was about 12 years ago and don’t have any spec for this !!!!
Would post some pics of the fill chambers and pressure switches but I can’t upload to this forum, is there a number of posts I have to reach first ?
Albert

[Penguin45]

Re: Siemens SE24A230GB/17 Sequence

I regret that I have no access to the sequence charts.

Posting pics is most easliy done through a hosting site – Photobucket, Flickr and the like.

Penguin45.

[AlbertHenry]

Re: Siemens SE24A230GB/17 Sequence

Do you know of the sort of common problems with this machine ?
What sort of bits are attached to the sump, obviously drain pump circ pump heater box. anything else to warrant striping down the base off the cabinet ?
What about other pressure switches temp sensors ect ?

[Penguin45]

Re: Siemens SE24A230GB/17 Sequence

The standard (endemic) problem is underfilling.

If you have the machine pulled out and the l/h cover off and start a programme, typically, the machine will drain for about a minute and you will see water pulsing through the rear portion of the matrix.

It should then start to fill. If it’s working properly, the central column of the matrix will fill, then water will overflow down the front channel and through the chamber with the the pressure switch and the hose. The water level will rise in the machine and water will accumulate in the chamber, eventually causing the blue arm to move across and work the switch. Circulation should start at this pont.

The suction of the circulation motor will cause the water level to drop and fill should continue until sufficient water enters the machine to activate the pressure switch a second time. If it’s all working properly, the water level should finish 1/3 -1/2 way up the salt cap inside the machine.

You shouldn’t need to remove the base for testing purposes. There is only the one level sensor.

HTH,

Penguin45.

[AlbertHenry]

Re: Siemens SE24A230GB/17 Sequence

After cleaning all the common problems the performance seems to have got better. So that’s a good thing.

Do still get the ker chonk ker chonk sound but this seems to be some where around the pumping out rinsing bit but not sure as you cant tell where the machine is in its programme !!!! as it is filling the drain pump operates and pumps out also stopping the fill then the drain pump stops and filling continues this happens several times what is it doing ??

Just one other thing
can you tell me what bits and bobs there are on the machine, ie: the programmer is in the door under the digital display ? one pressure switch on left hand side water matrix with flood switch ? down under the machine by the sump there is the drain pump, circ pump and heating unit what else is down there and are there any other sensors or switches anywhere else ?

[eddie1234567]

Re: Siemens SE24A230GB/17 Sequence

Hi, I am having some issues with the this machine as well but FD8205 340036.

Gladly create my own thread for this, but it seemed like a good continuation of Albert last reply.

Initially the machine would stay at 1 minute never finish the wash. There was no heat in the water. Couple of resets and still nothing.

So good old search and this is where I found this thread.
In the matrix the top float was totally solid with gunk as was the float in the pressure switches.

Machine was isolated from the mains and I removed the “water in”, “water out” and “circulation pipe”. After about an hour of shaking the matrix with various cleaning solutions all the gunk finally washed out, similar with the pressure switch chamber – apart from the major shaking.

I then hooked everything back up again, but feel that the matrix connectors on the side that goes to fill the machine etc are not sitting right, but I cannnot see any other way for them to sit, also the connector that goes direct to the pressure switch chamber and following through to the connector it has to the machine seems to let droplets of water through.

After making everything safe I reconnected to mains and ran a test, it seemed to fill ok initially, and on the drain it drains ok, but the arms don’t go around and there is the ker chonk ker chonk as mentioned above as if it keeps trying to fill. The input pipe jerks about as does the waste pipe.

I do appreciate that with no hot water it looks like BER as the heater has gone, but I was hoping that the gunk was stopping the activation of the heater. I do have a new one (machine) arriving today just in case. But would be good to find out.

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