Whitegoods Help article

10 appears in digital display

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Quick Answer

Error code 10 = water not filling. The dishwasher cannot confirm water is entering the machine. Check the supply tap is fully open and the fill hose is not kinked. If these basics are clear, a faulty inlet valve or water level detection fault is likely – call an engineer.

Error code 10 on a John Lewis JLBIDW1200 dishwasher (manufactured by Neff) indicates a water fill fault. The dishwasher is not detecting water entering the machine.

What Causes Error Code 10?

The dishwasher detects that water is not getting inside, but does not identify the specific reason. Possible causes range from straightforward to more involved:

  • A kinked or blocked fill hose
  • The water supply tap not turned on fully
  • A faulty water inlet valve
  • A fault in the water level detection system

The diagnostic approach is the same as for a washing machine not filling. Although the linked guide covers washing machines, the principle of checking all the basics first applies equally to dishwashers: machine won’t fill with water.

If these checks do not identify the cause, a qualified engineer will be needed to investigate further.

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Last reviewed: April 2025.

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