# Rectifying faults

- If a fault (e.g. a filter damage) occurs, the vacuum cleaner must be switched off immediately. The fault must be repaired before resuming operation.

Problem | Corrective measures
--- | ---
The suction turbine will not switch on. | Check the mains cable, mains plug, fuse, socket and fill level sensors (35).
The mode selector switch (6) is set to "automatic start/stop". Set the mode selector switch (6) to the "extraction" symbol or switch on the power tool plugged into the electric socket (4).
The suction turbine switches off. | Empty the container (1).
The suction turbine will not switch on again after the container has been emptied. | Switch the dust extractor off and wait five seconds before switching it back on.
Clean the fill level sensors (35) and the space between the fill level sensors (35) using a brush.
The suction power is decreasing. | Remove any blockages from the vacuum nozzle, suction tube (29), vacuum hose (21) or flat-pleated filter (24).
Change the disposal bag (23) or dust bag.
Make sure the filter cover (34) is engaged correctly.
Place the top part of the dust extractor (10) on correctly and close the catches (11).
Change the flat-pleated filter (24).
Dust is escaping when vacuuming | Check that the flat-pleated filter (24) has been fitted correctly.
Change the flat-pleated filter (24).
Automatic switch-off (wet vacuuming) is not working. | Clean the fill level sensors (35) and the space between the fill level sensors (35) using a brush.
Automatic switch-off will not work in the presence of non-conductive liquids or foaming. Check the fill level regularly.
The automatic filter cleaning function is not working. | Activate the automatic filter cleaning function (press the AFC button (3)).
Connect the vacuum hose (21).
The automatic filter cleaning function will not switch off. | Contact an authorised Bosch after-sales service centre.
The automatic filter cleaning function will not switch on. | Contact an authorised Bosch after-sales service centre.