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Bosch SMS4012GB dishwasher. Refused to fill. Found tray full of water in base of unit. Mopped up water about 2 litres. Machine works but lower reservoir on the side of the machine with float switch overfills and overflow leaks about an eggcup full each cycle. What is causing the overflow please?


Answers :

An electric switch activated by air pressure. This device detects air pressure exerted on it through a flexible tube connecting it to part of a water tub.
\015\012When activated, this switch then opens an electrical circuit stopping further filling of water into the machine.. May also be called a PRESSURE SWITCH. if not activated definately it will cause overflow.
\015\012
\015\012Check the wire harness to the pressure switch. or tap your float switch with finger tips may be it get stacked. if nothin happen replace the pressure switch.
\015\012Rate my solution if useful.
\015\012
\015\012Prince P
Problem was not electrical but a blockage and general scale build up not allowing the metered water to fill the cabinet quickly enough. Thanks for the input Prince P it set me off on the right track.
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