As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THIS WAS THE THIRD TIME IN ONE-WEEK FADEC DEGRADE/RESTART FAULT WAS DISPLAYED ON THE CAUTION WARNING PANEL DURING RUN UP. AFTER CONNECTING TO THE ECU WITH A COMPUTER, FAULTS WFMVFLT AND WFMVRTFLT WERE FOUND, THESE SAME FAULTS WERE FOUND ON THE PREVIOUS INCIDENTS. AFTER PERFORMING PISTON PARKING PROCEDURE, CLEARING FAULTS AND PERFORMING SOME TROUBLESHOOTING I SPOKE WITH ROLLS ROYCE REP. GREG HOUSTON, WHO ADVISED REPLACING THE HMU.