Commercial Chef Overcurrent or Overheat Shutdown

Microwave runs for a few seconds then shuts off completely, sometimes resetting the clock.

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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

Weak household circuit or breaker, failing high-voltage component drawing excess current, overheating thermal fuse opening, loose power cord connection

How to Fix / Troubleshooting

Safety: Repeated shutdowns can indicate an internal fault; avoid repeated restarts.

User checks:

  • Plug the microwave directly into a dedicated outlet (no extension cords or power strips).
  • Verify the circuit is not overloaded with other high-wattage appliances.
  • Allow the unit to cool for 30 minutes and try a short test.

If problem persists:

  • An internal component (e.g., magnetron, transformer, thermal fuse) may be overheating or drawing too much current. Professional diagnosis is recommended.
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Repair Difficulty

Hard 4/5

Required Part

Thermal Fuse
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