Zanussi Compressor start device or main control failure

Refrigerator not cooling in both fridge and freezer compartments, compressor not 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

Failed compressor start relay/PTC, Faulty main control board not energising compressor, Loose compressor wiring, Overload protector tripped

How to Fix / Troubleshooting

Safety: Unplug the refrigerator before accessing the rear components.

Steps:

  • Listen for compressor: When previously powered, note if you heard clicking every few minutes (start relay issue) or complete silence (control issue).
  • Access compressor: Remove the rear lower cover to expose the compressor and start device.
  • Inspect start device: Remove the plastic housing on the compressor terminals. Look for burn marks or a burnt smell. Gently shake the relay/PTC; if it rattles, it is likely faulty.
  • Check connections: Ensure all spade connectors are firmly attached to the compressor and start device.
  • Replace start device: If suspect, replace with the correct Zanussi start relay/PTC kit.
  • Control board: If the compressor still does not attempt to start, the main PCB may not be sending power and should be checked by a technician.
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Repair Difficulty

Hard 4/5

Required Part

Compressor Start Relay / PTC
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