Hilti 3497779 Gebrauchs- und Pflegehandbuch PDF herunterladen (Seite 17)

9. Troubleshooting

Fault Possible cause Remedy

The power tool doesn’t run.

The battery is discharged or fitted

incorrectly.

The battery must be heard to en-

gage with a double click or, respec-

tively, needs to be charged.

Electrical fault. Remove the battery from the power

tool and contact Hilti Service.

The power tool switches it-

self off and all 4 LEDs on the

battery blink.

The overload cut-out has been acti-

vated.

Release the control switch, reduce

the load on the power tool and then

press the switch again.

The power tool doesn’t run

and 1 LED blinks.

The battery is discharged.

Change the battery and recharge

the discharged battery.

The battery is too hot or too cold. Bring the battery to the recom-

mended working temperature.

The control switch can’t be

pressed, i.e. the switch is

locked.

The forward / reverse switch is in

the middle position (safety lock

engaged).

Push the forward / reverse switch

to the left or right.

The screw cannot be driven,

although the drive spindle

rotates.

The forward / reverse switch is set

to the wrong direction of rotation.

Set the forward / reverse switch to

the correct direction of rotation.

An incorrect or worn bit / bit holder

/ setter is used.

Check that the correct bit / bit

holder / setter is used or fit a new

one.

Running speed suddenly

drops considerably.

The battery is discharged.

Change the battery and recharge

the discharged battery.

Speed cannot be controlled

by the switch, it simply

switches on / off.

The control switch is defective. Contact Hilti Service.

The battery doesn’t engage

with an audible double click.

The retaining lugs on the battery

are dirty.

Clean the retaining lugs and check

that the battery engages securely.

Contact Hilti Service if the problem

persists.

The power tool or the battery

gets very warm.

Electrical fault. Switch the power tool off imme-

diately, remove the battery and

contact Hilti Service.

The tool has been overloaded. Allow the power tool to cool down.

The screw is pressed too

tightly against the surface.

The depth gauge is set incorrectly. Turn the depth gauge to the right.

The screw is not pressed

tightly enough against the

surface.

The depth gauge is set incorrectly.

Turn the depth gauge to the left.

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