Dishwasher displays error code i30

Last updated 26/04/2024 11:12


  • Dishwasher displays error code i30
  • Dishwasher beeps 3 times, or the LED flashes 3 times
  • Dishwasher drain pump runs constantly (background hum/rumbling noise low down)
  • Dishwasher leaking constantly 
  • The anti-flood device is on (hence pump running)

Applies to

  • Integrated dishwasher
  • Freestanding dishwasher


It is possible that after leaving the machine for several hours, or overnight (with the water supply turned off), the error may disappear and the programme will run again. However, if the source of the leak into the base has not been rectified, it is likely the i30 error will return. If this step doesn't resolve the issue, then a service visit by one of our approved service providers is recommended. 

Error message i30 may indicate an internal leak, caused by water collecting in the base of the appliance. In this case, a visit by an authorised service technician is recommended.

The anti-flood device is on. The display shows i30.

  • Close the water tap.
  • Make sure that the appliance is correctly installed.
  • Make sure the baskets are loaded as instructed in the user manual.
  • Make sure the filters, spray arms and sump are clean

Warning: Turn off the dishwasher's water supply to avoid any risk of flooding.

Tips for saving energy at home when using your dishwasher

With energy prices soaring, it’s never been a better time to rethink how you use the appliances in your home to save energy and money. Besides helping your household budget, it will also benefit the planet, reducing CO2 emissions. Here are some helpful tips on how to reduce energy when using your dishwasher

  • Use the ECO program when dishwashing. It takes a bit longer, but the dishwasher doesn’t have to work as hard, which means it uses less energy. Compare it to if you run or walk 1km. Running is faster but you need to use a lot more energy. If you walk instead it takes longer, but you use much less energy. The same logic goes for the ECO program
  • If you have an hourly electricity rate, do the dishes when the price is at its lowest 
  • If you have an old dishwasher, it will have a low energy class – you can save energy just by replacing it with a new one

See other helpful tips to save energy and money

Efficient energy-saving tips for your home to lower your energy costs


  • Over foaming:

On some occasions, excess foam inside the tub can lead to incidents of i30. If this is the case, switch off the dishwasher at the mains, leaving it overnight to allow the foam to disperse, then refer to our article 'Foam in my Dishwasher' for more advice on this topic. 

  • Spray arm rotation impeded or large item deflecting water jet:

Occasionally a large item may block or impede the spray arm rotation, leading to water being sprayed consistently in one position only, this may put undue pressure on one area of the door seal and lead to inundation and leaking in that particular area. Check the loading and ensure the spray arms can rotate freely and that no unusually large item is either blocking movement, or perhaps deflecting water spray into a corner of the dishwasher, or back onto the internal door panel. After adjusting the load and/or removing the large item, leave the machine off overnight to allow the base to dry out a little and try again the next day. 

  • Leaking:

It may indicate an internal leak leading to the water collecting in the base of the appliance. In this case, a visit by an authorised service technician will be required.

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