Bush Overheating Electrical Component or Insulation Odour

Freezer emits a strong chemical or burning smell when running.

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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

Burning start relay/PTC, Overheated wiring at compressor terminals, Failing main control PCB component

How to Fix / Troubleshooting

Safety first: Immediately unplug the freezer if you smell burning or see smoke. Do not continue to operate the appliance.

  • Inspect rear compartment: After allowing components to cool, remove the rear panel and look for discoloured or melted plastic around the compressor start relay/PTC and wiring.
  • Check control board: If the smell seems to come from the control housing, remove the cover and inspect the main control PCB for burnt components.
  • Replace burnt parts: Any visibly damaged relay, wiring, or PCB must be replaced with Bush-compatible parts. Do not attempt to reuse burnt components.

Because burning smells indicate a fire risk, consider having a qualified technician perform a full safety inspection before returning the freezer to service.

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Repair Difficulty

Professional Required 5/5

Required Part

Compressor Start Relay/PTC
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