How do I adjust the water softener setting on my dishwasher?
Make sure the dishwasher is off, then hold the Programme Selection button while pressing the ON/OFF button until a brief audible signal sounds. Keep the Programme Selection button pressed for at least 5 seconds until another signal sounds, then press the button repeatedly to cycle through settings d0 to d7. Turn off the dishwasher using the ON/OFF button to confirm the new setting. (Page 8)
From the official Hoover Hoover H Wash 500 Washing Machine Instructions manual, page 8
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