What was found
F/A REPORTED CABIN TEMP VERY HOT FROM ROWS 6-15. FOLLOWED QRH PROCEDURE-TURNED TRIM AIR SWITCH OFF. AFTER 15 MINUTES CABIN TEMP WAS REPORTED VERY GOOD. TRIM AIR SWITCH LEFT IN OFF POSITION. ACFT GROUNDED. ACCOMPLISHED FIM TASK 21-62, 801, P/2 TEMP CONTROL BITE NO FAULTS LOGGED, BITE TEST OK. CLEANED CABIN TEMP SENSOR FILTERS, REF AMM 21-61-06, PB 400. ACCOMPLISHED FIM TASK 21-62, NR 849, PASSENGER CABIN CONTROL TEMP. NORMAL, NO DEFECTS NOTED.