Hi
I have a Bosch dishwasher SGV43A03GB which is about 4 years old. It
has worked very well until recently - the wash quality is now very hit
and miss, sometimes getting everything spotless, other times leaving
deposits especially on the top rack.
I've tried using dishwasher cleaner and have disassembled the spray
bars and checked there is no blockage or scale, manually cleaned out
any grease build ups etc but still can't work out what's wrong.
The one thing I noticed is if I put it on the prewash cycle and pull
the door open whilst it's wasing, the bottom rotor is spinning but the
top one isnt although water is coming out of the rotor bar. It is free
to move and as previously mentioned has been cleaned and I am sure
there are no blockages. I have removed the grey plastic trunking
between the bottom of the dishwasher to the top and it is definitely
not blocked.
Once the trunking is removed it is evident that the bottom and top
rotors are fed from different channels.
Does this indicate a problem or is it that the program selects the top
rotor at different times to the bottom rotor or should they always
operate simultaneously ? If it indicates a blocked pump is this
possible to look at in-situ ? This model is built in so is a fair
amount of work to remove from the worktop.
Any advice or tips welcome !!

wrote in message
oups.com...
Hi
I have a Bosch dishwasher SGV43A03GB which is about 4 years old. It
has worked very well until recently - the wash quality is now very hit
and miss, sometimes getting everything spotless, other times leaving
deposits especially on the top rack.
I've tried using dishwasher cleaner and have disassembled the spray
bars and checked there is no blockage or scale, manually cleaned out
any grease build ups etc but still can't work out what's wrong.
The one thing I noticed is if I put it on the prewash cycle and pull
the door open whilst it's wasing, the bottom rotor is spinning but the
top one isnt although water is coming out of the rotor bar. It is free
to move and as previously mentioned has been cleaned and I am sure
there are no blockages. I have removed the grey plastic trunking
between the bottom of the dishwasher to the top and it is definitely
not blocked.
Once the trunking is removed it is evident that the bottom and top
rotors are fed from different channels.
Does this indicate a problem or is it that the program selects the top
rotor at different times to the bottom rotor or should they always
operate simultaneously ? If it indicates a blocked pump is this
possible to look at in-situ ? This model is built in so is a fair
amount of work to remove from the worktop.
Any advice or tips welcome !!

First - are you sure you haven't set it on a programme to only wash the
bottom level?

Is the top drawer properly opening up something at the back which admits
water to the top arm?

(I have a Candy / Hoover so I can't comment on exact details)

On Wed, 10 Oct 2007 10:04:30 UTC, wrote:

I have a Bosch dishwasher SGV43A03GB which is about 4 years old. It
has worked very well until recently - the wash quality is now very hit
and miss, sometimes getting everything spotless, other times leaving
deposits especially on the top rack.

You haven't mentioned the sump filters (there are two in ours). They are
accessed (in ours) by rotating the thing over the drain hold (in the
bottom on the washing compartment) anticlockwise and lifting the base
plate out. One is attached to the plate, one is a loose gauze cylinder.

If these are blocked there may not be enough water getting through to
feed both rotors adequately.

--
The information contained in this post is copyright the
poster, and specifically may not be published in, or used by
http://www.diybanter.com

The sump filters are both clean - I rinse these out every couple of
cycles.

On Wed, 10 Oct 2007 10:52:42 UTC, wrote:

The sump filters are both clean - I rinse these out every couple of
cycles.

Just in case the rotor thing is a red herring (although I'd check the
water feed from the back of the basket to the centre of the rotor)....

Salt. Is there a salt feed problem; it can give these symptoms. Is the
salt OK, and has the salt selection lever been moved accidentally?

--
The information contained in this post is copyright the
poster, and specifically may not be published in, or used by
http://www.diybanter.com

wrote in message
ps.com...
The sump filters are both clean - I rinse these out every couple of
cycles.

Are there lemon or orange pips in the rotor arms. These often block the end
jets which provide most of the motive power to circulate the spray arms but
fall back into the arms when there is no flow. This happened quite a lot
with my Bosch. Take the arms out and see if they rattle?


--
Bob Mannix
(anti-spam is as easy as 1-2-3 - not)

On 10 Oct, 14:44, "Bob Mannix" wrote:
wrote in message

ps.com... The sump filters are both clean - I rinse these out every couple of
cycles.

Are there lemon or orange pips in the rotor arms. These often block the end
jets which provide most of the motive power to circulate the spray arms but
fall back into the arms when there is no flow. This happened quite a lot
with my Bosch. Take the arms out and see if they rattle?

--
Bob Mannix
(anti-spam is as easy as 1-2-3 - not)

No, I am sure they are completely clear.

My gut feeling is that the pump is blocked and insufficient water is
being pumped up to the rotor - hence my question about what is
involved in accessing the pump.

wrote in message
ups.com...
On 10 Oct, 14:44, "Bob Mannix" wrote:
wrote in message

ps.com... The sump
filters are both clean - I rinse these out every couple of
cycles.

Are there lemon or orange pips in the rotor arms. These often block the
end
jets which provide most of the motive power to circulate the spray arms
but
fall back into the arms when there is no flow. This happened quite a lot
with my Bosch. Take the arms out and see if they rattle?

--
Bob Mannix
(anti-spam is as easy as 1-2-3 - not)

No, I am sure they are completely clear.

My gut feeling is that the pump is blocked and insufficient water is
being pumped up to the rotor - hence my question about what is
involved in accessing the pump.

Fair enough - does sound like a blockage somewhere then. Some things were
accessible from the front on mine but for a full pump investigation I think
we are talking remove machine and strip down. On mine there was a sort of
finned exit hole from the sump, below the filters. I often had to clear
these channels out with a pointy implement, dragging the stuff out into the
base of the sump and fishing out by hand. You could even try drain unblocker
but no liability accepted etc!!!


--
Bob Mannix
(anti-spam is as easy as 1-2-3 - not)

wrote:

I have a Bosch dishwasher SGV43A03GB which is about 4 years old. It
has worked very well until recently - the wash quality is now very hit
and miss, sometimes getting everything spotless, other times leaving
deposits especially on the top rack.

Blimey, what the hell is it with Bosch dishwashers this week ?!!

Ours showed symptoms very much like this a couple of years back, and I
couldn't get to the bottom of it at all. In the end we got an engineer
out, and he quickly found the problem was due to totally clogged up
pipes inside the machine - it looked totally disgusting, bit like those
photos you sometimes see of smoker's arteries. He cleaned it all out,
and it worked fine thereafter. I think it was the pipe at the bottom,
leading to/from the pump which he removed.

Presumably the part-blockage in the pipe prevents adequate water getting
to the upper rack, and what does get through is likely to be
contaminated by the pipe contents.

The bloke said that every so often we ought to use one of those
'dishwasher freshener' products (where you run the machine empty on a
hot cycle with this power-detergent stuff) - we've never done so as we
regarded them as a marketing con. Anyway, FWIW we use them now, and the
machine's been fine since (but then again, it took 4 years for the
problem to become apparent in the first place, so who knows!)

David

writes:

I have a Bosch dishwasher SGV43A03GB which is about 4 years old. It
has worked very well until recently - the wash quality is now very hit
and miss, sometimes getting everything spotless, other times leaving
deposits especially on the top rack.

Is there a blocked filter at the far end of the cold water inlet pipe?
The filter may be found inside when you unscrew the 3/4" BSP coupling.

Do you have a self cutting fitting? When my maching had similar
problems both the filter and the fitting were badly clogged up.

--
Alan J. Wylie http://www.wylie.me.uk/
"Perfection [in design] is achieved not when there is nothing left to add,
but rather when there is nothing left to take away."
-- Antoine de Saint-Exupery

On 10 Oct, 22:53, (Alan J. Wylie) wrote:
writes:
I have a Bosch dishwasher SGV43A03GB which is about 4 years old. It
has worked very well until recently - the wash quality is now very hit
and miss, sometimes getting everything spotless, other times leaving
deposits especially on the top rack.

Is there a blocked filter at the far end of the cold water inlet pipe?
The filter may be found inside when you unscrew the 3/4" BSP coupling.

Do you have a self cutting fitting? When my maching had similar
problems both the filter and the fitting were badly clogged up.

--
Alan J. Wylie http://www.wylie.me.uk/
"Perfection [in design] is achieved not when there is nothing left to add,
but rather when there is nothing left to take away."
-- Antoine de Saint-Exupery

OK - looks like a stripdown tonight !!

I guess I'll have to remove the whole thing out of the kitchen units -
is the pipe work then accessible or do I need to take covers of the
dishwasher ?

Are there any service manuals or drawings available online ?

Thanks so far for everyone's help.

wrote in message
ups.com...
On 10 Oct, 22:53, (Alan J. Wylie) wrote:
writes:
I have a Bosch dishwasher SGV43A03GB which is about 4 years old. It
has worked very well until recently - the wash quality is now very hit
and miss, sometimes getting everything spotless, other times leaving
deposits especially on the top rack.

Is there a blocked filter at the far end of the cold water inlet pipe?
The filter may be found inside when you unscrew the 3/4" BSP coupling.

Do you have a self cutting fitting? When my maching had similar
problems both the filter and the fitting were badly clogged up.

--
Alan J. Wylie
http://www.wylie.me.uk/
"Perfection [in design] is achieved not when there is nothing left to
add,
but rather when there is nothing left to take away."
-- Antoine de Saint-Exupery

OK - looks like a stripdown tonight !!

I guess I'll have to remove the whole thing out of the kitchen units -
is the pipe work then accessible or do I need to take covers of the
dishwasher ?

Are there any service manuals or drawings available online ?

Thanks so far for everyone's help.

Is the spraybar a part of the top rack? If so, have you investigated how it
gets its water supply when pushed in? (or is it a fixed spraybar?) Reason
for asking, is mine has a plunger that opens a valve at the back. If this
was broken then the symptoms would be as you describe.

wrote:
On 10 Oct, 22:53, (Alan J. Wylie) wrote:
writes:
I have a Bosch dishwasher SGV43A03GB which is about 4 years old. It
has worked very well until recently - the wash quality is now very hit
and miss, sometimes getting everything spotless, other times leaving
deposits especially on the top rack.
Is there a blocked filter at the far end of the cold water inlet pipe?
The filter may be found inside when you unscrew the 3/4" BSP coupling.

Do you have a self cutting fitting? When my maching had similar
problems both the filter and the fitting were badly clogged up.


OK - looks like a stripdown tonight !!

Good luck - it's a pig of a job. All the parts are incredibly
inaccessible I'm afraid.

I guess I'll have to remove the whole thing out of the kitchen units -
is the pipe work then accessible or do I need to take covers of the
dishwasher ?

Are there any service manuals or drawings available online ?

The only drawings I've coe across are at the Boasch spares site at:
http://www.bshappliancecare.com/Bosch/boschspares.html
(click "quickfinder")
but they aren't a lot of help for dismantling etc.

David

On Oct 11, 10:42 am, wrote:
OK - looks like a stripdown tonight !!

I guess I'll have to remove the whole thing out of the kitchen units -
is the pipe work then accessible or do I need to take covers of the
dishwasher ?

Are there any service manuals or drawings available online ?

Thanks so far for everyone's help.
Hi,

I'd try a few washes on the hottest setting.

cheers,
Pete.

Well I spent a couple of hours last night and think I'm making
progress.

Once the dishwasher was out of the kitchen units (it's built in
integrated dishwasher) I took the left hand side cover off and a metal
cover at the bottom front off, both held on by 2 screws (torx)

It was immediately obvious that the pipe running at the bottom between
the sump and the large plastic 'slab' at the side was gunged up. The
pipe just pulls off and after rinsing out thoroughly (the amount of
sludge removed was unbelievable) it cleaned up fine. I also remove the
plastic thing at the side with various valves and switches attached,
this too was very sludged up.

I ran the dishwasher up with the covers still removed and I could see
water circulating OK, also the noise of the water sloshing around the
inside was much more evident than usual so I think it hadn't been
working that well for ages (which ties in with the the gradual
deterioration in wash performance)

To start with the top rotor still didn't spin but later in the cycle
it was, so possibly this is by design, or maybe with the majority of
the sludge removed, the last few bits are being shifted and the
remaining contamination will clear. I'm going to run it tonight with
some proper dishwasher cleaner to hopefully clear the last of the
sludge and hopefullt that'll be it.

The lesson to learn I think is to use cleaner regularly. Despite my
machine looking immaculate on the inside yet totally clogged inside
was a real eye opener.

I'll report back when I've done the final clean !

Thanks to everyone for their suggestions

Have now done about 4 wash cycles and the performance is perfect !!

I think the thing to check for is the state of the water in the sump
after a wash, previously, with the filter out, it was about half full
of murky water, now, it is almost empty with the water at the bottom
clean. I think that alone is a pretty good indication of whether the
pipes are blocked.

Clearly the dishwasher hasn't been working at its best for some time -
although a fiddly job didn't actually cost anything other than a
bottle of dishwasher cleaner I used after I'd stripped it down.

On Oct 12, 9:23 am, wrote:
Well I spent a couple of hours last night and think I'm making
progress.

Once the dishwasher was out of the kitchen units (it's built in
integrated dishwasher) I took the left hand side cover off and a metal
cover at the bottom front off, both held on by 2 screws (torx)


Hi,

I'm getting exactly the same problem, but I cannot get the sides off.
I've removed the two torx screws from the left hand panel but it seems
to be stuck at the back of the machine and will not come off. I don't
want to bend the panels, but I've been wriggling the blasted thing for
about 15 minutes and it won't budge.

Any suggestions?

I really don't want to call out the bloke to fix it again and spend
£50 for him to remove the side panel and clean out some peas from the
pipes (for the THIRD time)

The really annoying thing is we try to rinse everything a bit before
we put it in, but some stuff seems to still get missed. Almost not
worth having a dishwasher if you have to clean everything before you
put it in!!

Thanks all!

Steve

On Nov 13, 7:30 pm, wrote:

The really annoying thing is we try to rinse everything a bit before
we put it in, but some stuff seems to still get missed.

If the plates are stacked before rinsing, sometimes peas and orange
pips can hide on the *bottom* of a plate.

cheers,
Pete.

wrote:
On Oct 12, 9:23 am, wrote:
Well I spent a couple of hours last night and think I'm making
progress.

Once the dishwasher was out of the kitchen units (it's built in
integrated dishwasher) I took the left hand side cover off and a
metal cover at the bottom front off, both held on by 2 screws
(torx)


I'm getting exactly the same problem, but I cannot get the sides off.
I've removed the two torx screws from the left hand panel but it
seems to be stuck at the back of the machine and will not come off. I
don't want to bend the panels, but I've been wriggling the blasted
thing for about 15 minutes and it won't budge.

Any suggestions?

There are no other fixings per se. ISTR there were two circular indents
in the back face of the panel - ie, on the 1" 'lip' which bends round
the corner to the back of the machine - at the top and bottom. There's
a small hole at the bottom of each indent which accepts a tiny circular
plastic lug on the back of the machine, holding the panel in place, so
ISTR having unscrewed your two torx screws, you need to be splaying the
panel out sideways a bit, then push it backwards to disengage the lugs.

Mine's still leaking; haven't quite plucked up the courage to start
dismantling the gubbins yet...

David