Why is the service indicator blinking red on my Hilti Rotary Hammer?
- CCatherine FowlerSep 4, 2025
If the service indicator on your Hilti Rotary Hammer blinks red, it could be because the voltage provided by the electric supply is too high. Try using a different power outlet and check the electric supply. Alternatively, the overheating prevention cut-out might have been activated. In this case, allow the tool to cool down and clean the air vents. Note that running under no load is still possible.