F3
TCL High-Power Mode Overload Protection

Vacuum shows F3 and runs only in low power or shuts off when switching to turbo mode.

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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 causing high load in turbo, Weak battery unable to supply turbo current, Failing main motor drawing excessive current at high speed, Faulty power mode control on PCB

How to Fix / Troubleshooting

Safety first: Turn OFF the vacuum and remove the battery before cleaning.

  • 1. Clear all blockages: Empty the dust bin, clean filters, and check wand and floor head for obstructions.
  • 2. Test in standard mode: Run the vacuum in normal mode. If it operates normally, the issue is limited to high‑power operation.
  • 3. Fully charge battery: Charge the battery to 100% and then test turbo mode again. Weak batteries often trigger F3 under high load.
  • 4. Short test bursts: Try turbo mode for 5–10 seconds at a time. If F3 appears immediately with clear airflow and full battery, the motor or PCB may be faulty.

Service note: Persistent F3 in turbo mode with a new or known‑good battery suggests a failing main motor or control board. These components should be tested and replaced by a technician.

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Repair Difficulty

Medium 3/5

Required Part

Main Suction Motor Assembly
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