Fpric for Model Number WFW8300SW03 I ran the diagnostic test on a wfw8300sw03 and got a F-28. Replaced the MCU and I still get a F28. I checked the wiring. The drum turns during the diagnostic test but the F-28 displays when it tries to spin fast to drain. What should I check next?
Answer Fpric, The F28 is a serial communication problem between the Central control unit and the motor control unit. Which means that the 2 boards are not communicating. With the MCU already being replaced and the wires checking ok and the issue would be in the CCU which is part number WPW10525351. Read More... Answered by AppliancePartsPros.com | Wednesday, September 17, 2014