As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PSC - PASSING THROUGH APPROXIMATELY 15000' AIR CONDITION PACK HOT CAUTION LIGHT ILLUMINATED FOR 1 MINUTE. RAN CHECKLIST WENT TO MANUAL ON CABIN A BUMPED UP TEMP. LIGHT FLICKERED AND WENT OUT. DUCT TEMP INDICATED APPROXIMATELY 20C WHEN LIGHT CAME ON. REPLACED THE ACM IAW D8-200 AMM TASK 21-50-11-000-801 AND 21-50-11-400-801. OPERATIONAL CHECK GOOD AIRCRAFT RETURNED TO SERVICE.