As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONTOL CABIN ZONE TEMP ILLUMINATES ON MC RECALL, RESETS WITH MASTER CAUTION. CONTROLLABLE WITH CONTROL CABIN TEMP SELECTOR. ACFT GROUNDED. PERFORMED PACK ZONE TEMP. CONTROLLER BITE TEST IAW AMM 21-61-00. FOUND FAULT ON CONTROL CABIN TRIM AIR MODULATING VALVE. R & R CONTROL CABIN TRIM AIR MODULATING VALVE IAW AMM 21-61-21. OPS CHECKED NORMAL, NO LEAKS NOTED. ACCOMPLISHED BITE TEST, NO FAULT NOTED.