As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WINDOW HEAT INOP LEFT SIDE WINDOW. SAMC TEXT: SWAPPED M191 & M192 FAULT FOLLOWED. RETURNED TO ORIGINAL POSN. NEEDS MR30415-194. REPLACED CURRENTLY INSTALLED IN M192 POSN. RT FWD WINDOW HEAT OPERATES NORMAL, BOTH LEFT SIDE WINDOW HEAT SYSTEM INOP. DEFERRED LEFT SIDE NR 2 WINDOW HEAT PER MEL 3041P CB OPEN ON P37 PANEL. RPLC'D M192 WINDOW HEAT CONTROLLER.