Bosch SVG56A13/25 cycle sticks at 1 minute left

[johnbutt]

Bosch built in model SGV56A13/25 – 3 years old.
The wash cycle cleans ok but takes ages to finish or just sticks at display of 1 minute to go. While in this state ,there is a quiet hum like a motor running. If door is opened at the 1 minute display, the sump is about a third full of water and water is still trickling frow lower arm for a few seconds.
Dishes are warm but not as hot as would have been before fault. Also some are still damp.
Pressing the reset buttons causes the program to finish in about one more minute, leaving dishes still damp. Without reset it just keeps humming.
There is a Bosch parts list but no Bosch diagram for model /25 on their site, but there is one for /27 which looks as though it is very close.
Any advice?

[gegsy]

Re: Bosch SVG56A13/25 cycle sticks at 1 minute left

Hi
Do a search for bosch on here with similar fault, its a well known problem.

Greg

[iwhite3]

Re: Bosch SVG56A13/25 cycle sticks at 1 minute left

I had the same fault on my Siemens. See post lower down the list (Siemens & Bosch m/c’s are the same). Now fixed. My understanding of likely causes / fixes:

1) Try taking the filters out in the bottom inside the m/c. Feel for a hole at 7 oclock. Try rodding down the this hole using some flexible wire or a small bottle brush (dont force anything). There is a tube down there running towards the front L of the m/c which gets bunged up with sludge. This didnt fix mine though.

2) If above doesnt work remove m/c front lower panel (under door) and side panels. You need torx driver. You will see the tube mentioned above running from the pressure chamber 480748 (translucent moulding with orange float in it and pressure sensor) to the sump. Tube pulls off and you can then clean properly (I rodded it then poured boiling water into sump to flush it through. Look at pressure chamber to see if this is full of gunk. If so you will need to clean this out too (bit more difficult to disassemble though).
Also check matrix / heat ex 216452 as mine had sludge in top LH corner.
To get this all out you need to unbolt the 2 metal straps from matrix. Remove the 2 mouldings at top corners of m/c (front pulls off, back has 1 screw). Pull tubes out of matrix. Then the matrix pulls upwards (the connections are push fit). Water will spill from matrix at this point. You can then clean the matrix by filling with boiling water and shaking…. You can remove the pressure chamber disassemble clean and reassemble.

Its not as hard as it sounds if you are reasonably mechanically minded (ie if you are used to DIY / car repairs for example). If not I would get a pro in to do it………

Cleaning the tube alone did not fix mine. Fault was caused by either the pressure chamber blockage or the matrix gunk (dont know which)……

Numbers I mentioned are part numbers in Bosch/Siemens spares diagram 4/6.

[johnbutt]

Re: Bosch SVG56A13/25 cycle sticks at 1 minute left

Thanks – greg and esp. iwhite3. Did as advised. There wasn’t much gunk but i cleaned it off anyway.
Didn’t think it was enough to make any difference but reassembled – and hey presto – the problem has gone.

Brilliant website. Thanks again to all. 😀

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