Zanussi Reduced Cooling Capacity / Partial Refrigerant Loss

Freezer runs but does not reach -18°C; food is soft or slowly thawing.

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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

Refrigerant leak in evaporator or pipework, Partially blocked capillary tube, Weak compressor, Severely dirty condenser coils

How to Fix / Troubleshooting

Safety: Unplug before cleaning or moving the appliance. Do not attempt to open the sealed refrigeration system yourself.

  • Check condenser cleanliness: Clean dust and lint from the condenser coils at the rear or base using a brush and vacuum.
  • Ensure ventilation: Confirm there is adequate clearance around the freezer and that warm air can escape from the rear or top vents.
  • Inspect door gasket: Make sure the door seal is intact and not allowing warm air ingress.
  • Observe frost pattern: Remove the internal rear panel (if accessible) and look at the evaporator. A healthy system shows even frost across most of the coil. Frost only on a small section often indicates low refrigerant or a restriction.
  • Call a technician: If frost pattern is abnormal or cooling remains poor after cleaning and gasket checks, a certified technician must check for leaks, evacuate, and recharge the system or replace the compressor.
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Repair Difficulty

Professional Required 5/5

Required Part

Evaporator Coil
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