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 ILLUMINATED DURING RECALL, EXTINGUISHED WHEN MASTER CAUTION LIGHT PUSHED. ACFT GROUNDED. VERIFIED FAULT ON TEMP CONTROLLER BITE. REPLACED THE CONTROL CABIN TRIM AIR MODULATING VALVE IAW AMM 21-61-21/401. OPS & LEAK CHECKED GOOD.