I have a built in dishwasher bought from John Lewis model number JLBIDW1200 (manufactured by NEFF), which displays error codes in the digital display. If ,10 appears in red LED it means there is a problem with the water. For some reason it’s detecting that water isn’t getting inside.
This could be caused by something as simple as a kinked fill hose or the water tap not turned on properly or it could be something more complex. The best thing to do is follow the advice in my washing machine help article machine won’t fill with water because although written for washing machines the principle is exactly the same. This guide will help find or discount the most common associated faults. If it doesn’t help I would advise finding an appliance engineer
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