What was found
AFTER PUSHBACK AND ENGINE START, ZONE TEMP, LIGHT ILLUMINATED ON RECALL FOR CONTROL CABIN. PERFORMED QRH PROCEDURE, LIGHT EXTINGUISHES ON MASTER CAUTION RESET. ACFT GROUNDED. PERFORMED BITE OF LT AND RT PACK FLOW TEMP CONTROLLERS IAW FIM 21-62, TASK 801. NO EXISTING FAULTS AND NO FAULTS LOGGED FOR LAST NINE LEGS. PERFORMED GROUND TEST FOR PFTC-L AND PFTC-R PER FIM PARA E. ALL TESTS PASS. PERFORMED OPS TEST OF CABIN TEMPERATURE CONTROL AND INDICATION SYS IAW AMM 21-61-00-700-807-002. ALL TESTS PASS.