Miele Partial Loss of Refrigerant or Reduced Cooling Capacity

Freezer runs constantly but does not reach set temperature (slightly cool but not freezing)

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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

Slow refrigerant leak in evaporator or condenser, Weak compressor, Partially blocked capillary tube, Condenser coil heavily clogged with dust

How to Fix / Troubleshooting

Safety first: Disconnect power before cleaning coils or accessing the compressor area.

Steps:

  • 1. Clean condenser: Thoroughly vacuum and brush the condenser coil. Poor heat rejection can mimic low refrigerant symptoms.
  • 2. Check door sealing: Inspect the door gasket for gaps or damage that could allow warm air in, increasing load.
  • 3. Monitor frost pattern: With the inner rear panel removed (if accessible), briefly run the unit and observe the evaporator. A healthy system will frost evenly across most of the coil. Frost only at the inlet or in a small section suggests low charge or restriction.
  • 4. Avoid DIY refrigerant work: Do not attempt to top up refrigerant. Miele systems require precise charging and leak repair by a certified technician.
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Repair Difficulty

Professional Required 5/5
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