fix NDIR 关联的HF变量/CEXH关联的IsCEXHOn变量

Furnace/FurnaceUI/Views/Maintenances/Maintenances/ELK/GasPanelViewModel.cs

@@ -2064,9 +2064,9 @@ namespace FurnaceUI.Views.Maintenances.Maintenances.ELK
             }
             else
             {
-                if (DictChangedPumpValve.ContainsKey("IsHFClnOn"))
+                if (DictChangedPumpValve.ContainsKey("IsCEXHOn"))
                 {
-                    DictChangedPumpValve.Remove("IsHFClnOn");
+                    DictChangedPumpValve.Remove("IsCEXHOn");
                 }
             }
             if (IsHTR1Enable != IsOldHTR1Enable)