Milwaukee Intermittent Thermal or Overcurrent Trip

Vacuum shuts off after a few seconds of use but restarts after waiting a short time.

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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

Partially blocked airflow path, Overloaded motor from heavy debris, Weak thermal protector in motor assembly, Failing motor windings

How to Fix / Troubleshooting

Safety first: Remove the battery before inspection.

  • 1. Clear all blockages: Remove the nozzle, wand, and hose. Check each section for obstructions and clean thoroughly.
  • 2. Clean filter and canister: A dirty filter can cause rapid overheating. Clean or replace the filter and empty the canister.
  • 3. Allow full cool-down: Let the vacuum sit for 30–45 minutes to fully cool, then test again under light load.
  • 4. Monitor runtime: If it still shuts off quickly under light use, the thermal protector or motor windings may be failing. The motor assembly should be replaced.
  • 5. Avoid overloading: Use the appropriate nozzle and avoid continuous heavy-duty use beyond the tool’s rating.
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Repair Difficulty

Medium 3/5

Required Part

Motor Assembly with Thermal Protector
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