As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN TEMP CONTROLLERS INDICATED INOP ON EICAS FOR "FWD" , "AFT", AND "FLT DK" ON OVHD PANEL. AIRCRAFT BACK TO BLOCK AND GROUNDED BY MAINTENANCE. MAINTENANCE RESET CABIN TEMP ZONE CONTROLLER REF AMM 21-61-00 OPS CHECK OK. AIRCRAFT RETURNED TO SERVICE.