E07
Neff Compressor Start / Inverter Fault

E07 error, compressor does not start or stops quickly, no cooling

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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 or PTC, Faulty inverter module (on inverter‑driven models), Overload protector tripping due to high current, Internal compressor failure

How to Fix / Troubleshooting

Safety: Work on compressor circuits only with power disconnected. Refrigerant system is sealed and must not be opened by unqualified persons.

Steps:

  • Listen for start attempts: After restoring power, listen for clicking or humming from the compressor area. Rapid clicking suggests start device issues.
  • Inspect start device: Remove the cover on the compressor terminals and check the Neff start relay/PTC and overload protector for burn marks or rattling pieces.
  • Test continuity: With power off, test the overload and PTC for continuity per Neff specifications.
  • Check ventilation: Ensure condenser coils are clean and the unit has adequate airflow around it to prevent overheating.

Resolution: Replace the compressor start device or inverter module if defective. If the compressor is locked or drawing excessive current, a professional sealed‑system repair or compressor replacement is required.

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Repair Difficulty

Professional Required 5/5

Required Part

Compressor Start Device / Inverter Module
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