Sub-Zero
Short Circuit Under Load
Oven trips the circuit breaker when heating.
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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
Shorted heating element to chassis, Pinched or bare wiring contacting metal, Faulty control board causing overcurrent, Incorrect breaker size or shared circuit
How to Fix / Troubleshooting
Safety: Do not repeatedly reset a breaker that trips immediately; this indicates a potentially dangerous fault.
- Identify when it trips: Note whether the breaker trips immediately when the oven is turned on or only when it reaches higher temperatures.
- Inspect elements: With power off, visually inspect elements for spots where the sheath may be touching metal or is cracked.
- Check wiring: Remove rear and top panels to inspect wiring harnesses for pinched or bare wires contacting the chassis.
- Test elements: Use a multimeter to check for continuity between each element terminal and the oven chassis. Any continuity indicates a shorted element that must be replaced.
- Consult electrician: Verify that the oven is on a dedicated circuit with the correct breaker size.
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Repair Difficulty
Hard
4/5
Required Part
Bake or Broil Heating Element
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