Tristar Insulation Degradation / Heat Shield Failure

Exterior of the multicooker becomes excessively hot to the touch during normal operation.

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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

Damaged internal thermal insulation, Missing or mispositioned heat shield, Blocked ventilation, Overfilled cooker causing excessive steam

How to Fix / Troubleshooting

Safety first: Avoid touching hot surfaces; use handles and keep children away from the appliance.

  • Check placement: Ensure adequate clearance around the cooker and do not operate it under low cabinets where heat can accumulate.
  • Monitor temperature: Some warmth is normal, but if you cannot briefly touch the sides, there may be an internal issue.
  • Inspect vents: Clean any dust or grease from vents to improve airflow.
  • Internal inspection (advanced): With the unit unplugged and cooled, remove the outer shell (if serviceable) to check that reflective heat shields and insulation are intact and correctly positioned.

If insulation or shields are damaged or missing, they should be replaced to prevent overheating of the exterior and nearby surfaces.

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Repair Difficulty

Hard 4/5

Required Part

Internal Thermal Insulation / Heat Shield
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