As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONTROL CABIN ZONE TEMP LIGHT ILLUMINATES DURING RECALL. LIGHT EXTINGUISHES WITH MASTER CAUTION RESET. ACFT GROUNDED. R & R CONTROL CABIN TRIM MOD VALVE V143 IAW AMM 21-61-21/401. NR 1 AND NR 2 ZONE TEMP CONTROLLER BITE TESTED GOOD. VALVE LEAKS CHECKED GOOD. BOTH PACKS OPS CHECKED NORMAL.