As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONT CABIN ZONE TEMP ILLUM ON RECALL BITE CHECK BOTH TEMP CONTROLLERS RT CONTROLLER SHOWED FLT DECK TRIM VALVE FAULT WHICH CLEARED. DUE PREVIOUS HISTORY 15 APR CONTINUED MEL 21 21C. INSTALLED PLAC VERIFIED FAULT REF MM 21 60 00, FOUND AIR FILTER OBSTRUCTED & SENSOR ELEMENT COVERED WITH CONTAMINANTS. CLEAN FILTER & SENSOR. OPERATED PACK & CONFIRMED GOOD TEMP RESPONSE SYS OPS NML. CLEARED MEL 21 21C CN 6424720 P C REM.