As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT 17,000 FEET, RT PACK LIGHT ILLUMINATED. IAW QRH, WARMER TEMP SELECTED & RESET. THE LIGHT CAME BACK ON. THE FLIGHT RETURNED & LANDED WITHOUT FURTHER INCIDENT. NO EMER WAS DECLARED. INSTALLED PLACARD FOR RT PACK MEL. R & R RT PACK TEMP CONTROL VLV IAW AMM 21-21-1. OPERATIONALLY CHECKED GOOD. MEL RESTORED, PLACARD REMOVED & MIC SHEET CLEARED.