Fisher and Paykel DD603I - F2 Error - Parts Replaced

[vwcampin]

Been a couple years since I last needed support, but I’m back.  Fisher and Paykel DD603I double drawer dishwasher that we have had for years.  Recently the upper drawer has gotten progressively louder over many months and a couple weeks ago stopped functioning and threw an F2 error.  Upon inspection the motor did not want to come out and when it did, it appeared that the coating around the magnet had started to come off and caused things to run against the rotor housing and generally mess things up.  As a result I order the following and replaced them:

- 524185P Fisher Paykel Dishwasher Motor Rotor to Replace obsolete 525884P and 524307P
- 528042 Fisher Paykel Dishwasher Pump Base

After installing both and reassembling when I put the drawer in diagnostic mode, the motor runs, but an incredibly slower pace than the bottom drawer.  Attempting to run the top drawer results in an F2 error about 10-20 seconds after starting it.

To me the parts appear to be connected properly and I swapped the motor rotor with the bottom drawer and it works as expected.

thoughts?  I have a video I’ll look to attach a little later.

 

[J5*]

Did you get a rps as well ?

i would bet the rps is corroded or not fitted properly 

[vwcampin]

I did not order a replacement RPS but did remove and fit the existing one.  I will say it definitely had some corrosion on it that I attempted to clean up before I fitted it to the new pump base.  As I first replaced the motor rotor before the pump base, I will say that the slow rotation was the same, so I’ll ‘assume’ I have fitted it properly.

[vwcampin]

Video link: https://drive.google.com/file/d/1umgpVPJMafeRIP1nwg6O6QWCIj8vMEj-/view?usp=drivesdk

[J5*]

You can swap the rps and the control module from the other drawer to confirm what the issue is 

[vwcampin]

I went ahead and ordered one.  I thought of swapping them out but decided to leave the working one alone as I’d rather not disturb ‘old plastic’ since it’s working flawlessly at the moment.  Knowing my luck I’d break off a plastic tab and have no dishwasher.  Part should be here today or tomorrow hopefully.

[vwcampin]

J5*, you hit the nail on the head.  The RPS/Hall sensor was the culprit and the top drawer is purring away again!  Appreciate your advice and thanks for sharing your expertise!