As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENGINE START DURING MASTER RECALL, CONT CAB ZONE TEMP LIGHT ILLUMINATED. EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED - YES. REMOVED AND REPLACED FLIGHT DECK TRIM AIR MODULATING VALVE REF AMM 21-61-21. BITE CHECK GOOD. OPS AND LEAK CHECK GOOD. THIS CLEARS MEL 21-21G.