Basic Dishwasher Troubleshooting; Viii. Troubleshooting - Bosch SHI4302 Manual

VIII. Troubleshooting

VIII. Troubleshooting

Basic Dishwasher Troubleshooting

Basic Dishwasher Troubleshooting
Problem
Washability
problems (dishwasher
won't clean properly)
HINT : Water level will not
affect washab ility as water
fill is measured
pressure, not time – water
level cannot b e adjusted.
Suds or foam
remains in dishwasher.
Possible Cause
Inappropriate
detergent used.
Blocked or clogged upper/ lower
spray arms.
Water doesn't circulate properly
due to debris in circulation motor
impeller.
Filter not locked down securely,
allowing debris to enter sump.
CAUTION : Use caution when removing
deb ris from sump to avoid b eing cut b y
sharp deb ris such as aluminum can tab s
or b roken glass.
Drain hose behind dishwasher
doesn't have an adequate loop.
b y
Partially clogged air gap, allowing
wastewater from prior washes to
circulate in dishwasher.
Water doesn't drain properly
Soap doesn't enter dishwasher
due to dispenser actuator (A2 ) failure.
HINT : Must pull out dishwasher and
remove left side panel to access float
switch.
Too much detergent used.
Improper detergent used (other
than powdered dishwasher detergent).
Dishwasher
properly.
dishwasher Instruct customer to use a powdered
dishwasher detergent (e.g. Cascade powder).
Check spray arms – clean or replace as
needed.
Twist and remove filter, then remove debris
from right side of sump where water enters
circulation pump impeller.
jammed
dishwasher, remove tank, remove circulation
motor and unscrew and clean out imp
HINT :
impeller assemb ly or it won't seal adequately.
Twist and remove filter, then remove debris
from sump. Instruct customer to twist and
lock filter (cylinder) securely into sump.
HINT :
b reaking down food deb ris and triple filtering
system trapping food deb ris, filters shouldn't
normally clog up. Prob lem often caused b y filter
not b eing
customer to twist and l
Loop drain hose behind the dishwasher
(with the top of the loop) at least 20" above the
floor.
Unclog sink air gap.
NOTE : Cleaning sink air gaps is not covered
under warranty.
See Water doesn't drain properly on
page xx.
Turn off dishwasher and test actuator –
replace if faulty.
HINT :
detergent and rinse aid dispensers through a
mechanical linkage. The system always resets
when door closes. Check linkage b y moving it
manually.
continuity check on its terminals.
Instruct customer to use less.
Instruct customer to use a powdered
dishwasher detergent (e.g. Cascade powder).
doesn't drain See Water doesn't drain properly on
page xx.
62
Suggested Action
impeller, turn off and
If impeller is damaged, replace entire
Due to high temperature rinse (161
securely locked
One "wax" motor operates b oth the
Check "wax" motor b y running a
If debris has
pull out
o
down. Instruct