As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT ZONE TEMP LIGHT ILLUMINATED ON RECALL. EXTINGUISHED ON MASTER CAUTION RESET. GROUNDED - YES. INITIALLY HAD FAULT FOR AFT CABIN TRIM MODULATING VALVE. RESET SYSTEM AND RAN BOTH PACKS FOR 30 MINUTES, VARIED SUCCESSFULLY TEMPERATURE FOR ALL ZONES. AFTER RUNNING BOTH PACKS FOR 30 MINUTES, NO FAULTS AFTER RECALL BUTTON PUSHED. GROUND VERIFICATION CHECK WAS GOOD IAW AMM 21-61-21-400-801. BOTH CONTROLLERS BITE CHECK GOOD AFTER PACKS RUN.