f-28 is a serial communication error. either your main cntrl or motor control is going to be bad. hard to say which one without a multi meter and the machine in front of me though.
If your OHM meter is set to RX1 then the motor is bad. Infinite readings on the motor windings mean a bad motor, according to the Tech Sheet. Have you run the Diagnostic tests mentioned in the tech sheet yet?
Jimbo is this one of them reversing dryers with 3 phase dc motor?
My dryer just quit working It gives me just one error code f-28. Model Number: wfw8500sr0
Scott, you'll find the MCU on the floor in the left front corner, part # W10163007It may also need to be replaced if the motor went out. Try to go to the motor and make sure none of the small wires going to it are damaged. I have replaced a lot of harnesses between the MCU and the motor before due to broken wiring on the connector harness.
Now that you have access to the motor, unplug the harness and verify the motor windings again while directly in front of the motor, not from the CCU harness. See if it still shows the same readings as before.
Don't know about you, but I'd be on my way out to my truck to fetch a new MCU. The motor is OK, just be sure the tiny wires on the connections to it are ok.
The last time I checked, Hawaii is still America, so shipping is a moot issue Follow this link to order the motor control, part # W10163007