What was found
WINDOW HEAT OVERHEAT LIGHT COMES ON PERFORMED BITE ON WHCU #2. P5-9 FAULT LIGHT ILLUMINTED FOR R#1 WINDOW. SWAPPED WHCU #1 AND #2. FAULT DID NOT FOLLOW. SUSPECT MODULE, WINDOW/PITOT HEAT P005-9. PLACED #2 WHCU, #1 WINDOW SENSOR TO OVER RIDE MODE. NO HELP. PLACING RIGHT FWD WINDOW HEAT ON MEL PLACED ON MEL. DDP C/W REPLACED WINDOW/PITOT HEAT MODULE (P5-9) PER AMM: 30-00-02/401. OPERATIONAL TEST SATISFACTORY, MEL CLEARED, PLACARD REMOVE.