Zanussi Stuck Solution Valve or Trigger Switch

Solution sprays continuously even when trigger is released

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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

Sticking mechanical valve in handle, Jammed trigger mechanism, Shorted trigger microswitch, Debris in solenoid valve

How to Fix / Troubleshooting

Safety: Unplug the unit and empty the clean water tank.

  • Inspect trigger: Open the Zanussi handle housing and check that the trigger returns fully. Clean any dried detergent causing it to stick.
  • Check microswitch: Test the trigger switch with a multimeter. If it remains closed when released, replace it.
  • Inspect solenoid valve: Access the solution solenoid valve and check for debris preventing it from closing. Flush with clean water or replace if stuck open.
  • Test with water: Reassemble, refill the tank, and confirm that spraying only occurs when the trigger is pressed.
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Repair Difficulty

Medium 3/5

Required Part

Solution Solenoid Valve
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