Chosen Solution
The washer was giving SUD/F35 error. I installed a new CCU and a new Pressure Switch. It immediately gave F32 error at about 7 minutes of starting the wash. If I pull the plug and restart (so that the door will unlock), it gives F99, which goes away if I hit the power button, but F32 comes back in about 7 minutes of starting the wash. I also checked the voltage on PS8 socket pin 1 and 2, and it shows 0.5V when the tub is empty, and when it starts filling, it slowly rises to 3.0V, and then I get F32 error. The fill, spin, drain seem to work just fine. I checked the pressure sensor tube at the top and it seems fine (although did not check the bottom, as it would require moving the machine). I cleaned the filter to the drain-pump, and checked the pump for any debris. When I run the diagnosis option 1, it immediately gives F99 error and stops. If I run the Diagnosis Only test (option #2), it cycles through C00 to C04, spends a long time on C04, and then throws F32. What do you think is the issue? Thanks for your help.
Hi @noeinstein , I realize that you replaced the control board but did you get the exact same board model for a replacement? Have read that there are several boards available but they have to be an exact match with the machine. Check what is printed on the board (or sticker) on the board and compare it to the original, if you still have it. The Whirlpool part number for the board (if it is printed on it) is WPW10156258 and this supplier says that it is compatible Looking at the tech sheet for the washer, an F99 code means it could also be a mismatch between the CCU and the UI boards. (see p.8), that’s why I asked about the board number. FYI. Sometimes the Ifixit website’s spam iRobot gets it wrong. It thinks that long number strings e.g. model numbers, are spam phone numbers and deletes the post. I have re-opened your deleted posts and then deleted any duplicated posts to avoid any confusion. This will restore your reputation points on the forum. For every deleted spam post 100 points are deducted. Moderator.
this is a list of the error codes https://www.searspartsdirect.com/diy/err… F99 is the control F32 is water level sensor. Given your testing, I am leaning toward the control, but since a sensor is a lot cheaper, I would test that first.
