As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ZONE TEMP CONTROLLER CABIN LIGHT ILLUMINATES ON RECALL. LIGHT GOES OUT ON MASTER CAUTION RESET. ACFT GROUNDED. PERFORMED PACK FLOW TEMP CONTROLLER BITE TEST, REF AMM 21-61-00-740-801-002. NEITHER PFTC SHOWS AN EXISTING FAULT. FAULT HISTORY SHOWS ON FLT 7 ON BOTH PFTC'S, 2 EA FAULTS - PFTC CONTROLLER INOPERATIVE 21-51117 AND 21-51123 IAW EA 900ER-21EA-16940, ACCOMPLISHED BITE PROCEDURE IAW FIM TASK 21-62 801, PAR B 2 AND PARA C. NO EXISTING FAULTS FOUND.