As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONTROLLER CABIN ZONE TEMP LIGHT ILLUMINATED ON RECALL, EXTINGUISHED AFTER RESET. ACFT GROUNDED. PERFORMED PACK/ZONE TEMP. CONTROLLER BITE AND RESET VERIFIED ON 1 AND 2 CONTROLLER CABIN ZONE TEMP LIGHT EXTINGUISHED AND GREEN GO LIGHTS ON REF AMM 21-61-00/501. THIS CLEARS MEL 21-21F.