Bauknecht No Cooling Due to Power or Control Failure

Freezer not cooling at all, interior warm, compressor not running, display may be on

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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

Faulty main control board, Defective compressor start relay, Open thermal overload on compressor, Broken power cord or mains connection

How to Fix / Troubleshooting

Safety: Always unplug the freezer before removing panels or touching electrical parts.

  • Verify power: Check the wall outlet with another appliance. Inspect the freezer plug and cord for damage.
  • Check control settings: Ensure the freezer is not in standby or demo mode and that the temperature is set to a freezing value.
  • Listen for compressor: After plugging in, listen at the back for a humming or clicking. No sound may indicate a control or relay issue.
  • Inspect compressor start device: Remove the rear panel and check the start relay and overload on the compressor for burn marks or loose connections. Replace if damaged.
  • Control board: If the start device is good and the compressor windings test OK but never receive power, the main PCB is likely faulty and should be replaced by a professional.
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Repair Difficulty

Hard 4/5

Required Part

Main Control Board (PCB)
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