Bottom drawer has error code u3 after 3 to 5 min of operation, just had service so can't be to much. any ideas?

Donna Brett, September 2009

Hi guys! Soni got the u3 error msg and as i read theu threads someone suggested checking your water pressure on the unit. He said turn the unit off door closed. Open unit and as the lights beep and light up press each cycle along th top of the inner door simutaneously. Hold for 5 secs each and the unit will light up on screen LP or HP. Select HP. Turn drawer off. This will now have changed and locked in HP high pressure. I then proceeded to turn on the drawer selected rinse as a quick run to teat amd Voila!! Its working thru its cycle again!! Awesome!! This answers all my questions give it a go!

Rhonda, July 2021

Hokay, heres what ya gotta do....First have the unit turned off. Then open up the drawer thats givin you trubbel.
The badge ought to be lit.
Now simultaneously press those static touch pads on each end of those led status lites (the ones on the drawer top?) (Cycle Select, and Eco-sensor pads)
Hold them for about 5 seconds.
Now If you have a metal front machine, the badge display will either show HP or LP. Assuming you have normal water pressure here like about 50 - 70 psi you want ta select the HP setting.
Do that by pressing the start button till you get what you want, then press power off to lock the setting in.
If you have an integrated model (you know.... matching your fancy smancy kitchen cabinets?)
Listen for a Hi or Low beep instead of looking for a display in the badge window.

this applies to 602's only. The 603's got smart and figgered out the difference all by themselves

Bob Sankie
Coastal Appliance Heating & AC
North County San Diego
"If you didn't call us, you paid too much"
http://www.coastalappliance.net

Read more: Fisher Paykel DD602 Fault Code U3 - The Kitchen Appliance Repair Forum - Do-It-Yourself Appliance Repair Help - ApplianceGuru.com: The Samurai Appliance Repair Forums http://applianceguru.com/forum1/163.html#ixzz1DLjShyjw
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copiedfromapplianceguru, February 2011

U3 means: Time to fill was too short, indicating water was still in the tub.
Is it draining all the water out at end of cycle? If no then remove rotor under the spray arm & check for any debris which may be blocking it.
If water is drained fully then it could be either set for a Low Pressure water system when it should be on a High pressure setting. Check your hand book it will tell you how to check & change it. It can also be caused by a control module fault.

Lincoln Appliance NZ, September 2009