Bosch WOT24455BY Instruction Manual And Installation Instructions page 18

Filter in drain pump blocked
The washing machine is fitted with a self-cleaning pump. The filter
catches objects such as buttons, coins, etc.
Check the filter regularly (at least two or three times a year). In
particular:
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Ø
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Warning!
Risk of scalding!
When you wash at high temperatures, the water gets
very hot. If you come into contact with the hot water,
you may be scalded.
Allow the water to cool down.
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Turn off the tap so that no more water can flow in and has to be
drained via the drain pump.
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if the washing machine is not draining or spinning correctly.
if the "clean pump" display lights up.
Switch off the appliance. Disconnect the mains plug.
Open the access to the pump, e.g. with a screwdriver.
Place a bowl underneath.
Slowly turn the filter anti-clockwise. Do not remove it yet!
Allow the water to drain out.
Unscrew the filter completely.
Clean the filter and filter compartment.
Make sure that the pump impeller (behind the filter in the
housing) can move.
Refit the filter. Screw in tightly as far as it will go in a
clockwise direction.
Pour 1 litre of water into the drum to ensure that no water
escapes from the filter.
Close the access to the pump.
Connect the mains plug.