Troubleshooting - Hilti NUN 054 IE-A22 Original Operating Instructions

▶ Do not send batteries through the mail. Consult your shipper for instructions on how to ship undamaged
batteries.
▶ Prior to each use and before and after prolonged transport, check the product and the batteries for
damage.
Storage
WARNING
Accidental damage caused by defective or leaking batteries !
▶ Always store your products with the batteries removed!
▶ Store the product and the batteries in a cool and dry place. Comply with the temperature limits stated in
the technical data.
▶ Do not store batteries on the charger. Always remove the battery from the charger when the charging
operation has completed.
▶ Never leave batteries in direct sunlight, on sources of heat, or behind glass.
▶ Store the product and batteries where they cannot be accessed by children or unauthorized persons.
▶ Prior to each use and before and after prolonged storage, check the product and the batteries for
damage.
8

Troubleshooting

If the trouble you are experiencing is not listed in this table or you are unable to remedy the problem by
yourself, please contact Hilti Service.
8.1 The crimping / cutting tool is not in working order.
Malfunction
The LEDs on the battery indi-
cate nothing.
1 LED on the battery blinks.
4 LEDs on the battery blink.
Red LED => lights continu-
ously and a warning tone is
emitted.
Red LED => blinks at short
intervals and a warning tone
is emitted.
Red LED => lights briefly and
no warning tone is emitted.
8.2 The crimping / cutting tool is in working order.
Trouble or fault
The battery runs down more
quickly than usual.
The battery does not en-
gage with an audible "double
click".
10 English
Possible cause
The battery is not correctly in-
serted.
Battery is discharged.
The battery is too hot or too cold.
Battery is discharged.
The battery is too hot or too cold.
The crimping tool has been briefly
overloaded.
Technical problem.
The state of charge of the battery
is too low to allow a complete op-
erating cycle.
The tool has overheated.
Possible cause
Very low ambient temperature.
The retaining lugs on the battery
are dirty.
Action to be taken
▶ Push the battery in until it
engages with a double click.
▶ Change the battery and charge
the empty battery.
▶ Allow the battery to cool
down or to warm up to room
temperature.
▶ Change the battery and charge
the empty battery.
▶ Allow the battery to cool
down or to warm up to room
temperature.
▶ Allow the tool to cool down.
▶ Incorrect operation is possible!
Contact Hilti Service.
▶ Change the battery and charge
the empty battery.
▶ Allow the tool to cool down.
Action to be taken
▶ Allow the battery to warm up
slowly to room temperature.
▶ Clean the retaining lugs and refit
the battery.
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