diff --git a/app/Main.c b/app/Main.c
index 6ef013e..6c1b471 100644
--- a/app/Main.c
+++ b/app/Main.c
@@ -26,6 +26,10 @@ void main()
 				Channel1_Error_Flag = System_Fault;	//通道1温度传感器故障
 				// PWM.Heating_Flag1 = System_Fault;
 			}
+			else if (ADC.Display_Temp1_Value == 500)
+			{
+				Channel1_Error_Flag = System_Fault;	//通道1温度传感器故障
+			}
 			else
 			{
 				Channel1_Error_Flag = FALSE;
@@ -44,6 +48,10 @@ void main()
 				Channel2_Error_Flag = System_Fault;	//通道2温度传感器故障
 				// PWM.Heating_Flag2 = System_Fault;
 			}
+			else if (ADC.Display_Temp2_Value == 500)
+			{
+				Channel2_Error_Flag = System_Fault;	//通道1温度传感器故障
+			}
 			else
 			{
 				Channel2_Error_Flag = FALSE;
diff --git a/app/PWM.c b/app/PWM.c
index 2a46848..5686e2f 100644
--- a/app/PWM.c
+++ b/app/PWM.c
@@ -92,6 +92,7 @@ static void PWM1_HeatingSetting(uint8_t Percent)
 		else
 		{
 			PWM.Heating_Flag1 = System_Fault;
+			Temp_Value = 0;
 		}
 		
 	}
@@ -131,6 +132,7 @@ static void PWM2_HeatingSetting(uint8_t Percent)
 		else
 		{
 			PWM.Heating_Flag2 = System_Fault;
+			Temp_Value = 0;
 		}
 		
 	}