Fisher and Paykel 23 in. DD603H SS Free-standing Dishwasher
Problem for Fisher and Paykel 23 in. DD603H SS Free-standing...

Beeping and red light stating U3




By ashsanford on Feb 03, 2009

" "
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.

Same Problem

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? -   cath1277

Feb 13, 2009

-   MY MODEL # IS DD602-SS-USA-V2 -   Guest

Best Solution

posted on Feb 04, 2009
Very Helpful)

RescueTech

Rank: Guru 
Rating: 96%, 161 votes
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.
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