Respekta GSP U 42 A User's Manual & Installation Instructions page 61

Problem
Stained filter interior Detergent with
White film on
inside surface
There are rust
stains on cutlery
Knocking noise in
the dishwasher
Rattling noise in
the dishwasher
Knocking noise in
the water pipes
The dishes
are not clean
Possible Causes
colourant may
have been used.
Hard water minerals.
The affected items
are not corrosion
resistant.
A spray arm is
knocking against
an item in a basket
Items of crockery
are loose in the
dishwasher.
This may be caused
by on-site installation
or the cross-section
of the piping.
The dishes were not
loaded correctly.
The program was
not powerful enough.
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What To Do
Make sure that the detergent has no
colourant.
To clean the interior, use a damp
sponge with dishwasher detergent
and wear rubber gloves. Never use
any other cleaner than dishwasher
detergent otherwise, it may cause
foaming or suds.
Avoid washing items that are not
corrosion resistant in the dishwasher.
Interrupt the program and
rearrange the items which are
obstructing the spray arm.
Interrupt the program and
rearrange the items of crockery.
This has no influence on the
dishwasher function. If in doubt,
contact a qualified plumber.
See notes in "Loading & unloading
your dishwasher".
Select a more intensive program.