F18
Miele Compressor Overload / Thermal Protection Fault

Display shows F18 and the unit may not cool or may shut down unexpectedly; compressor protection may be active.

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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

Overheated compressor due to poor ventilation, Failing compressor drawing high current, Defective overload protector, Blocked condenser coil

How to Fix / Troubleshooting

Safety first: Unplug the appliance and allow the compressor to cool before touching. Components may be very hot.

F18 suggests that the compressor’s thermal or current protection has been triggered.

  • 1. Improve ventilation:
    • Ensure the wine cooler has adequate clearance around ventilation grilles.
    • Remove any obstructions from front and rear vents.
  • 2. Clean condenser:
    • Access the condenser coil and clean thoroughly with a brush and vacuum.
  • 3. Inspect overload protector:
    • Locate the overload device on the compressor.
    • Check for discoloration or cracking; replace if damaged.
  • 4. Monitor compressor operation:
    • After cooling and cleaning, restore power and listen for the compressor starting and running smoothly.
    • If it repeatedly trips the overload, the compressor may be failing.
  • 5. Professional service: Persistent F18 with a hot or noisy compressor indicates a sealed-system issue; contact a refrigeration-certified technician for diagnosis and possible compressor replacement.
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Repair Difficulty

Professional Required 5/5

Required Part

Compressor Overload Protector
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