As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON RECALL, CONTROL CABIN ZONE TEMP LIGHT ILLUMINATED, EXTINGUISHED ON MASTER CAUTION RESET. ACFT GROUNDED. NR 1 TEMPERATURE CONTROLLER SHOWS FLIGHT DECK SELECTOR FAULT ON PREVIOUS FLIGHT BITE. REPLACED FLIGHT DECK TEMPERATURE SELECTOR. OPS CHECKED GOOD. BITE CHECKED BOTH CONTROLLERS GOOD, IAW AMM 21-61-07.