Bosch BCM8450UC Use And Care Manual page 33

Problem
The personally selected
volume is not reached.
Coffee dispensing slows to a
trickle or stops completely.
Hot water milky or tastes
of coffee.
Coffee has no "crema".
Coffee is too "acidic".
Coffee is too "bitter".
Coffee tastes burnt.
Coffee is too "weak".
Cause
Coffee is ground too finely.
Preground coffee is too fine.
Heavy build-up of limescale in
the appliance.
The brewing unit is soiled.
Milk tube has not been
removed.
Milk or coffee residue in the
beverage outlet.
Unsuitable type of coffee.
The beans are no longer fresh. Use fresh beans.
The grinding level is not
suitable for the beans.
The grinding level is too
coarse. Preground coffee is
too coarse.
Unsuitable type of coffee.
Coffee is ground too finely.
Preground coffee is too fine.
Unsuitable type of coffee.
The brewing temperature is
too high.
Coffee is ground too finely.
Preground coffee is too fine.
Unsuitable type of coffee.
Coffee strength selected is
too weak.
Ground coffee jammed in the
coffee drawer.
Simple troubleshooting
Solution
Adjust the grinding level
to a coarser setting. Use a
coarser ground coffee.
Descale the appliance
according to the instructions,
see the section "Service
programs".
Clean brewing unit, see
chapter "Cleaning the
brewing unit".
Remove the milk tube from
the milk container.
Clean the beverage outlet.
Use a type of coffee with a
higher proportion of robusta
beans.
Adjust the grinding unit to a
finer setting.
Adjust the grinding unit to
a finer setting. Use a finer
ground coffee.
Change the type of coffee.
Adjust the grinding level
to a coarser setting. Use a
coarser ground coffee.
Change the type of coffee.
Reduce the temperature,
see the section "Drink
adjustment".
Adjust the grinding level
to a coarser setting. Use a
coarser ground coffee.
Change the type of coffee.
Raise the strength of the
coffee, see the section "Drink
adjustment".
Remove the ground coffee
drawer, clean and dry
thoroughly.
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