As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PACK LIGHT ILLUMINATED FOLLOWING QRH MASTER RECALL RESET AND RT PACK LIGHT WENT OUT. ACFT GROUNDED. PERFORMED PACK BITE TEST. RIGHT PACK TEMP CONTROL VALVE FAILED. REPLACED RIGHT PACK TEMP CONTROL VALVE, REF AMM 21-51-10. OPS CHECK RT PACK, OPS NORMAL.