Hi
Sencor High Temperature Protection (Motor or Battery)

Display shows "Hi" and the vacuum refuses to start or stops suddenly during use.

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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

Continuous use on MAX power, Blocked filters causing overheating, Battery pack temperature too high, Faulty temperature sensor on motor or battery in Sencor unit

How to Fix / Troubleshooting

Safety first: Turn OFF the vacuum and remove the battery. Allow both the vacuum and battery to cool.

  • Cool down: Let the unit rest for at least 30 minutes in a cool, shaded area.
  • Clean filters: Remove and clean all filters and check for blockages in the airflow path to improve cooling.
  • Use lower power: After cooling, use ECO or normal mode instead of MAX for extended cleaning sessions.
  • Persistent overheating: If "Hi" appears quickly even with clean filters and moderate use, the temperature sensor or motor may be faulty. Have the vacuum inspected and possibly replace the motor assembly or battery pack.
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Repair Difficulty

Medium 3/5

Required Part

Temperature Sensor on Motor / Battery
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