Question about Fisher and Paykel 23 in. DD603H SS Free-standing Dishwasher

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Beeping and red light stating U3

When I turn it on Normal cycle after about 1-2 minutes it will stop and turn red and start beeping. in the screen its says U3.

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  • Anonymous Feb 13, 2009

    MY MODEL # IS DD602-SS-USA-V2

  • cath1277 May 23, 2009

    My upper drawer dishwasher will run for a few minutes and the start beeping and has a red light saying U3. What is wrong?

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  • 145 Answers

Hi and welcome.
You posted your question in the DD/DS603 series section, but code U3 is usually seen on a DD/DS601 or DD602 series. When this code appears, most comon cause is that the machine is set in LP or LOW PRESSURE mode and needs to be set to HP or HIGH PRESSURE.
The fault is sensing water level too high in the drawer, which can also be caused by a blocked drain or inoperative pump. I can tell you exactly how to tell if the machine in in the wrong mode if you can tell us the correct model number. The machine's pump/drain system can easily be checked by putting the machine in diagnostic mode and running the drain pump.

Posted on Feb 04, 2009

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