My Whirlpool WTW6200SW0 washing machine stopped in the middle of a wash over the weekend, displaying a F50 code. I have read through the service manual and performed the various tests set forth there. The tub spins freely by hand, so it is not jammed. Using manual mode I can verify that the RPS is functioning (three lights go on and off alternately when the tub is spun by hand. The resistances at P5 and P10 look good (the motor terminals are 32 ohms, not 16 ohms as stated some places in the service manual, but I believe this to be correct judging by the schematic). According to Test #3 in the tech sheet I should replace the RPS, but I just tested it and it appeared to work fine. I’m wondering if I should just replace the motor and machine controller. Anybody got any ideas?
As an added complication, I noticed that the stator has a small radial crack. This does not extend to the center of the stator or to the coils. I cannot imagine that such a crack could prevent the motor from spinning, but I mention it for completeness.
jiaailun said:
My Whirlpool WTW6200SW0 washing machine stopped in the middle of a wash over the weekend, displaying a F50 code. I have read through the service manual and performed the various tests set forth there. The tub spins freely by hand, so it is not jammed. Using manual mode I can verify that the RPS is functioning (three lights go on and off alternately when the tub is spun by hand. The resistances at P5 and P10 look good (the motor terminals are 32 ohms, not 16 ohms as stated some places in the service manual, but I believe this to be correct judging by the schematic). According to Test #3 in the tech sheet I should replace the RPS, but I just tested it and it appeared to work fine. I’m wondering if I should just replace the motor and machine controller. Anybody got any ideas?
As an added complication, I noticed that the stator has a small radial crack. This does not extend to the center of the stator or to the coils. I cannot imagine that such a crack could prevent the motor from spinning, but I mention it for completeness.
I had almost the exact same experience with my Cabrio, slightly different model number but essentially the same. I also did the diagnostics with the same results - including 32 ohm rather than 16 for the motor winding resistances. Again, my unit would not spin and gave me the F50 code and, similarly, the RPS checked out OK using the manual diagnostic mode. My reading of the tech sheet is that all this indicates a bad main board. The tech at the local repair shop agreed so I bought and installed a new unit, about $180 before tax, and it solved the problem.
As a follow up for others with similar problems. I ordered both the RPS and the controller, as I did not want to be without my washer for any longer than necessary, and based on what I had read online the RPS version that I had was prone to other problems. I replaced the RPS first, which involved running a new harness from the controller to the RPS. This did not fix the problem, which did not surprise me, but has hopefully eliminated the potential of a future problem with the RPS. Replacing the controller did fix the problem.
So in summary, if you have similar symptoms ignore the service manual and replace the machine controller, not the RPS.