As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON RECALL RT PACK LIGHT ILLUMINATED ALONG WITH CONTROLLER CAB AND FWD CAB ZONE TEMP LIGHTS. QRH ACCOMPLISHED. PACK LIGHT & ZONE TEMP WOULD NOT EXTINGUISH. ACFT GROUNDED. FOUND NR 2 ZONE TEMP CONT FAILED, NO TEST, NO LIGHTS. CYCLED C/B'S - NO HELP. REPLACED PACK/ZONE TEMP CONTROLLER IAW AMM 21-61-20.