Hilti
Intermittent Power Loss
Vacuum shuts off randomly during use without any error indication
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Loose battery connection, Worn battery contacts, Cracked solder joints on PCB, Failing on/off switch
How to Fix / Troubleshooting
Safety first: Remove the battery before inspecting contacts.
- Check battery fit: Ensure the battery locks firmly into place and does not wobble. Replace damaged latches.
- Inspect contacts: Look for discoloration or pitting on the battery and tool contacts. Clean gently with a dry cloth.
- Wiggle test: With the vacuum running (use caution), gently move the battery and handle. If movement causes shutoff, there is a connection or switch issue.
- Service recommendation: Intermittent faults often require PCB or switch replacement by a technician.
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Repair Difficulty
Medium
3/5
Required Part
Battery Interface Assembly or On/Off Switch
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