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Sarah TaylorAug 11, 2025
What to do if my Hilti SIW 9-A22 doesn’t start and 4 LEDs blink?
- MMarie WrightAug 11, 2025
If your Hilti Power Tool doesn't start and 4 LEDs are blinking, it indicates that the power tool was briefly overloaded. To resolve this, release the control switch and then press it again.