What was found
ON AFTER START CHECKS AIR COND LIGHT ILLUMINATED WITH CONT CABIN TEMP ZONE ON MASTER CAUTION RECALL AND RESETS ON SUBSEQUENT RECALL. GROUNDED - YES. PERFORMED BITE FOR BOTH PACK TEMP CONTROLLERS, REF FIM 21-62 TASK 801, BOTH CONTROLLERS TEST PASSED, NO FAULTS NOTED. CLEARS MEL 21-21F. PLACARDS REMOVED, NO HISTORY 90 DAYS.