As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN ODOR: STRONG MILDEW OR MUSTY SMELL IN CABIN WHEN THE VCS IS SELECTED ON. CLEANED DEBRIS FROM THE FORWARD AND AFT EVAPORATORS, RAN VCS AND CHECKED FOR WATER LEAKS. NO DISCREPANCIES NOTED. SYSTEM OPS CHECKS GOOD. WORK PERFORMED IAW THE PHENOM 300 AMM, CHAPTER 21-52-03.