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 ON RECALL LIGHT RESET NORMALLY. CONTROLLERS BITE CHECK BAD WITH CONTROL CABIN TRIM MODULATING VALVE FAULT. ALSO SYSTEM HAD A PREVIOUS WRITE UP. R & R CONTROL CABIN ZONE TRIM AIR MODULATIING VALVE IAW AMM 21-61-21-000-801 AND 21-61-21-400-801. OPS CHECKED GOOD.