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masonfrankJul 26, 2025
What to do if the Hilti DD 120 Drill service indicator shows nothing?
- JJack GarciaJul 26, 2025
If the service indicator on your Hilti Drill isn't showing anything, there are several potential causes. First, ensure the PRCD is switched on and functioning. If that's not the issue, check for any interruptions in the electrical supply by testing other devices and inspecting plug connections, the supply cord, the power supply line, and the main supply fuse. A defective on/off switch or a fault in the electronics could also be the reason, in which case, have the machine repaired by Hilti Service. Finally, if there's water in the motor, allow the drill to dry out completely in a warm, dry place.
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