Fault
The motor doesn't restart.
en
The appliance switches
itself off or on inadvert-
ently or the user receives
electric shocks (static dis-
charge).
The charging station
status LED blinks.
Doesn't switch over to a
discharged battery.
The motor doesn't run
when set to "AUTO".
The automatic filter ele-
ment cleaning system
doesn't work.
9.3 Battery-powered operation
Fault
The appliance doesn't
work.
The power tool doesn't
work and 1 LED blinks.
The appliance doesn't
work and the charging
station LED blinks.
The battery runs down
more quickly than usual.
46
Possible cause
The container is full.
Electrostatic charge is not dis-
sipated correctly; the appli-
ance is connected to an un-
earthed/ungrounded power
outlet.
The battery is too hot or too
cold.
No contact.
The battery was not detected.
The electric tool is faulty or is
not plugged in fully.
No suction hose is connected.
APFC button is in the OFF pos-
ition (LED doesn't light).
Possible cause
The wrong battery has been
used.
The battery is discharged or
fitted incorrectly.
Electrical fault.
The battery is too hot or too
cold.
The battery is discharged.
The battery is too hot or too
cold.
The overheating prevention
cut-out has been activated.
Battery condition is not op-
timal.
Remedy
Switch the appliance off.
Empty the container.
See section: 7.9.2 Emptying
the waste material container
when no dust bag is fitted
(collecting liquids)
Connect the appliance to an
earthed/grounded power out-
let; use an antistatic hose.
Bring the battery to room tem-
perature.
Reinsert the battery.
Remove the battery from the
appliance and contact Hilti.
Check the electric tool for cor-
rect operation and plug it in
fully.
Connect the suction hose.
Press the APFC button.
Remedy
Fit the correct battery.
The battery must engage with
an audible click or, respect-
ively, needs to be charged.
Remove the battery from the
power tool and contact Hilti
Service.
Bring the battery to room tem-
perature.
Change the battery and re-
charge the discharged battery.
Bring the battery to room tem-
perature.
Allow the power tool to cool
down.
Have the battery condition
checked by Hilti or replace the
battery.