Troubleshooting - Smeg CW 420 User Manual

If the system fails to pump out because the drain pump is
fouled (as a result of incorrect filter positioning), proceed as
follows:
Bale out the dishwasher with a basin and disconnect it from
the electrical mains.
Unscrew the screw A, release the tang B and lift it.
Check that the impeller of the drain pump underneath the
cover turns freely, and is free from dirt, limescale residues, or
pieces of glass. Never use tools, screwdrivers, scissors, etc.
PROBLEM
LIGHT S1 DOES NOT COME ON
WASHING PROGRAM DOES
NOT START
POOR WASHING RESULTS

TROUBLESHOOTING

12
POSSIBLE CAUSE
Mains power failure
The dishwasher has not yet
finished filling.
The word CLOSE remains on
the display
Spray arm washing holes
blocked by dirt or limescale
Filter fouled
Too little or unsuitable
detergent or rinse aid
No or not enough detergent or
rinse aid being supplied:
detergent or rinse aid not being
taken from the relative
container.
Plates/glasses badly arranged
Low washing temperature
Inappropriate cycle set
Spray arm nozzles fouled
- CW 420/430
POSSIBLE REMEDY
Check electrical mains connection.
Wait for the word FILL to go out.
If the word CLOSE remains on the
display even with the door closed,
call the after-sales service.
Remove spray arms and clean
them
(11.2 Routine inspection)
See "Cleaning the filter during the
day"
Check type and quantity of
detergent.
Pipe inside detergent and/or rinse
aid peristaltic pump worn or broke,
have it replaced by the After-Sales
Service.
Arrange plates/glasses correctly.
Check temperature shown on the
display, call the after-sales service
if less than 50℃
Increase washing duration,
especially if dishes are very dirty or
dirt has dried on.
- Check that nozzles are clean, and
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