John for Model Number WFW9400SW00 I get the F-25 error message after a load has run for about 30 minutes. When I run the diagnostic mode (empty) it runs through all steps no problem. I've already checked all of the connections, replaced the MCU and CCU. The motor reads 6 ohms between 1-2, 2-3 and 1-3 and 185 between 4-5. When the load is in, it runs through the wash, empties, starts slow spin, then fast spin and then gives me the code in the rinse section. Both hot and cold water go into machine fine. Don't know what to try next.
Answer Hello John, I'm concerned about the tach circuit, (Terminals 4 and 5). You stated that you got a reading of 185O. This reading should have been 115O. This is close enough to allow the unit to go through most of the cycle before it actually shuts down with the fault code. The tech sheet states: 1. Verify the shipping system including shipping bolts, spacers and the power cord are removed. 2. Unplug washer or disconnect power. 3. Check drive motor tachometer resistance. It should be approx. 115 O. 4. Check wire harness connections between the drive motor and the Motor Control Unit (MCU), and between the MCU and the Central Control Unit (CCU). 5. Plug in washer or reconnect power. 6. Check the MCU by looking for operations of the drive motor. 7. Check the drive motor for powered rotations. Let us know if you require further assistance. Read More... Answered by AppliancePartsPros.com | Wednesday, October 17, 2012