What was found
F/A REPORTS HOT ZONE ROW 6-14, NEVER COOLED OFF WHILE FWD AND AFT CABIN FREEZING. ACFT GROUNDED. ACCOMPLISHED FIM TASK 21-62, TASK 801, PERFORMED PACK TEMP CONTROLLER BITE CHECK NO FAULTS FOUND. CLEANED FWD AND AFT CABIN TEMP SENSOR FILTERS REF AMM 21-61-10-100-801. SET FWD AND AFT CABIN TEMP CONTROLLER TO FULL COLD, CABIN COOLED COCKPIT CABIN TEMP GAGE READS +-1 DEGREE C, THEN SELECTED FULL WARM, BOTH FWD AND AFT CABIN GOT HOT AGAIN COCKPIT CABIN TEMP GAUGE READS, CABIN FWD AND AFT HOT WITHIN 1 DEGREE C, REF AMM 21-61-00-700-807-002.