As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE IN CABIN. VERIFIED NO SMOKE IN THE CABIN. FOUND LT HP VALVE STICKING AND NOT SHUTTING OFF AS IT SHOULD AT 64 DEG SWITCH. REMOVED AND REPLACED LT HP VALVE IAW AMM 36-11-10-02. PERFORMED OPS CHECKS IAW AMM 36-11-00. OPS CHECK GOOD.