Trane SEN02528 Flame Sensor

The Trane SEN02528 is a safety device meant for use by Trane gas-fired heating and air-conditioning systems, especially furnaces. This small but significant sensor is essential for secure and consistent function. The serves as a flame guard, which is used to sense the presence of a flame within the burner assembly. It then uses a light detection system to constantly check the flame. If a flame is detected, the sensor sends an electric signal to the control board so that it may continue to run the furnace. If the flame is for any reason put off, the detects that there is no light and switches on the emergency signal on the control board.