I opened the cover panel of the control board. I visually checked for burns on the board and verified all connectors were firmly seated.
I opened the bottom of the unit, and I saw the service manual in a zip-lock bag. From this manual, I verified that the drain pump resistance is good, the start capacitor is good, and the lid switch is good.
I entered diagnostic service mode. Persistent alarms are 4 and 25.Error 4 means Reset Monitor, while Error 25 means Pressure Sensor Dropout. I successfully tested the Pressure Sensor (10), Recirculate Pump (11), Lid Switch (13), Spin (14), and Agitate (15). These tests indicate the main pump and belt work. The Drain Pump (12) test failed.
At this point, I was confident about the drain pump. As an additional test, I used a voltmeter to measure the AC voltage to the drain pump. While in diagnostics mode, I initiated the Drain Pump test and verified that AC power was present, but the drain pump did not turn on (I heard a buzzing noise).
I ordered (the evening of Nov 7) the appropriate drain pump. I also ordered the control board - I came across a similar story where the customer replaced the control board.
Solution:
The parts arrived Nov 9 - fast shipping!. I replaced the drain pump first. Entered service diagnostics mode and successfully tested the drain pump. I was confident at this point that it was fixed. I verified that the washer now works.
Now I will have to return the control board.
Overall, the website is very helpful, especially the stories posted by other users. This encouraged me to post my own story, hopeful that someone would find it useful.
Ronnel L.
E. Patchogue. NY