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.

Warning! The dust extractor contains dust particles that pose a risk to health. Observe all the safety warnings in these instructions.

Problem	Corrective measures
Suction turbine will not switch on.	Check the mains cable, mains plug, fuse, socket and fill level sensors (40).
Suction turbine will not switch on.	The mode selector switch (7) is set to "automatic start/stop". Set the mode selector switch (7) to the "vacuuming" symbol or switch on the power tool plugged into the plug socket (5).
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 (40) and the space between the fill level sensors (40) using a brush.
The suction power is decreasing.	Remove any blockages from the vacuum nozzle, suction tube (33), vacuum hose (25) or flat-pleated filter (28).
	Change the disposal bag (27) or safety filter bag (26).
	Make sure the filter cover (39) is engaged correctly.
	Place the top part of the dust extractor (12) on correctly and close the catches (13).
	Change the flat-pleated filter (28).
Dust is escaping during extraction	Check that the flat-pleated filter (28) has been fitted correctly.
Dust is escaping during extraction	Change the flat-pleated filter (28).
Automatic switch-off (wet extraction) is not working.	Clean the fill level sensors (40) and the space between the fill level sensors (40) using a brush.
Automatic switch-off (wet extraction) is not working.	Automatic switch-off will not work in the presence of non-conductive liquids or foaming. Check the fill level regularly.
Acoustic warning signal sounds.	Suction power setting too low. Set the suction power regulator (8) to a higher setting.
	Hose diameter setting is wrong. Set the volume flow controller (6) to the correct vacuum hose diameter.
	Vacuum hose (25) is blocked or twisted. Remove blockage or untwist hose.
	Disposal bag/safety filter bag full. Change the disposal bag (27) or safety filter bag (26).
	Flat-pleated filter (28) is dirty. Clean or change the flat-pleated filter if required.
	The airflow supplied by the connected power tool is insufficient. Open the false air intake (36) on the dust extraction adapter (23): Turn the ring on the dust extraction adapter until the false air intake is fully open. Open the false air intake on the power tool if there is one.
	Malfunction of the monitoring electronics. Contact an authorised Bosch after-sales service centre.
The automatic filter cleaning function is not working.	Activate the automatic filter cleaning function (press the AFC button (9)).
The automatic filter cleaning function is not working.	Connect the vacuum hose (25).
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.