E12
Zanussi Detergent Dosing System Fault

Detergent mixing error; machine runs but does not draw detergent from cartridge or tank, E12 shown

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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

Blocked detergent inlet, Faulty detergent solenoid valve, Kinked detergent hose, Empty or incorrectly seated detergent cartridge

How to Fix / Troubleshooting

Safety: Unplug the unit and remove any detergent cartridges before service.

  • Check detergent supply: Ensure the Zanussi detergent tank or cartridge is filled and correctly locked into place. Verify any caps or seals are removed as per the user manual.
  • Clean detergent inlet: Inspect the inlet port and filter screen where the cartridge connects. Rinse and clear any dried detergent residue.
  • Inspect detergent hose: Access the internal detergent line from the cartridge to the mixing point. Straighten any kinks and replace brittle or cracked hoses.
  • Test solenoid valve: Locate the detergent solenoid valve. With the unit powered (qualified person only), check if the valve receives voltage when detergent mode is selected. If it does but does not open, replace the valve.
  • Flush system: After repairs, run warm water through the detergent circuit to ensure free flow and clear the E12 error.
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Repair Difficulty

Medium 3/5

Required Part

Detergent Solenoid Valve
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