As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE IN COCKPIT AFTER APU HAD BEEN RUNNING10 MIN, NO CIRCUIT BREAKERS OR CAS MESSAGES. PERFORMED APU RUNAND FOUND CABIN TEMP RISING AND RH ACM SUPPLY DUCT HOT. GAINED ACCESS TO ACM AND FOUND SEIZED AND FAILED TORQUE CHECK. ALL WORK DONE IAW G5000 GVFD AMM 21-00-00 862-801 INSTALLED NEW ACM IAW G5000 AMM 21-52-09 REV 48 REINSTALLED TEMP CONTROL VALVE IAW G5000 AMM 21-52-33-400-801 REV 48.