Carrier LH33WZ520 Flame Sensor

The Carrier LH33WZ520 is a Flame Sensor an essential safety device for your Carrier Heating and Cooling system. It is a small, but essentialpart, with dimensions of 0.7 inches long, 3.5 inches wide, and 0.2 inches high. It is a small component, it has an essentialfunction of maintaining the safety and efficiency of your furnace. The flame sensor is mounted inside the furnace to sense the flame of the furnace. It uses a bar that becomes red when placed near the flame. This change in temperature tells the furnace control board that combustion is proceeding as it should. If the sensor does not detect a flame or the signal is interrupted, the board will turn off the gas supply to avoid a leakage or an explosion.