I held out little hope that the solution to my problem would be as simple as this, but thought Id give it a try. 히터 전면 커버를 벗겨서 살짝 들여다보니 설명이 없는 흰색 플라스틱 조각이 보였습니다. I tried to push it in and, lo and behold, it made a resounding click!