Electrolux EWM21xx Service Manual page 19

Wrong choice of an option is displayed by Err, when a function not
compatible with the chosen programme is selected.
The wrong selection is also signalled by an acoustic alarm (if activated).
An alarm code indicates an error of the appliance operation.
Simultaneously to the displaying of the code, the START/PAUSE
flashes.
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Buzzer
See page12.
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