diff --git a/src/components/floor-plan/modal/basic/step/Orientation.jsx b/src/components/floor-plan/modal/basic/step/Orientation.jsx
index d815bd2c..0b603aed 100644
--- a/src/components/floor-plan/modal/basic/step/Orientation.jsx
+++ b/src/components/floor-plan/modal/basic/step/Orientation.jsx
@@ -262,6 +262,12 @@ export const Orientation = forwardRef((props, ref) => {
     setRoofsStore(newRoofs)
   }
 
+  useEffect(() => {
+    // 컴포넌트가 마운트될 때 selectedModules가 없으면 handleChangeModule 호출
+    if (moduleList.length > 0 && (!selectedModules || !selectedModules.itemId)) {
+      handleChangeModule(moduleList[0]);
+    }
+  }, [moduleList]); // 빈 의존성 배열로 마운트 시 한 번만 실행
   return (
     <>
       <div className="properties-setting-wrap">