Others will change them as part of their preventative maintenance every two or three years. Some experienced technicians will change the flame sensor any time there is a flame current issue, while others usually just clean them. The 52W29 flame sensors overall length is 4 7/8 The metal tip is 2 3/4 long and the white porcelain is 1 1/2 long.
![lennox furnace parts flame sensor lennox furnace parts flame sensor](https://www.ufixit.com/files/Flame-Sensor-for-Goodman-JS-L38-035.jpg)
The LB-74940A flame sensor kit comes in a factory sealed parts bag. This flame sensor also has part number 52W29 on the sealed flame sensor bag. So you can connect the flame sensor wire to a screwdriver and put the screwdriver into the flames. We sell a brand new genuine Lennox OEM furnace Flame Sensor Kit Part number LB-74940A. the flame sensor is just a way of exposing the voltage on the flame sensor wire to the furnace burner flames. Call 88 to shop with confidence from an authorized Lennox Parts Dealer and save money and time. Regarding this, can you bypass a flame sensor?Īctually, you can bypass the flame sensor. Lennox 17J56 Flame Sensor 65209300, PSE-HC2-SB in stock for quick ship. Bad flame sensor: When the furnace has fired and is burning hot, a bad flame sensor won't sense the heat and will shut down the furnace. The purpose of the flame sensor is to confirm to the system that whenever the gas valve is open, a fire is actually present.Īlso Know, how do you know if a flame sensor is bad? Good flame sensor: A properly functioning flame sensor will shut down the gas valve when it does not sense a flame when the furnace should be firing. It's not much more than a thin, usually bent, metallic rod that sits in front of the flame stream inside the furnace.
![lennox furnace parts flame sensor lennox furnace parts flame sensor](https://www.amresupply.com/thumbnail/product/1444388/625/469/1444388-33F37-Lennox-Flame-Sensor.jpg)
Steel wool or a fine sand paper can be used to polish (clean) the sensor rod and remove the coating. As always, turn off all electrical power to the furnace while you are performing this repair.
#LENNOX FURNACE PARTS FLAME SENSOR CRACKED#
The flame sensor is a rather simple device located at the burner assembly. We have thousands of genuine OEM Lennox, Rheem, Ruud, Goodman, Trane, Heil, Quaker, Bryant, Carrier, Payne and other leading brand maintenance and repair parts and accessories in stock, ready to. Broken or cracked ceramic are signs that the flame sensor is defective. Likewise, people ask, where is my flame sensor on my furnace? Remove the screw that holds the flame sensor rod in place. Sensor Measures Approximately: 3-1/4 Long. Measures Approximately: 4-7/8 L x 1/2 W x 7/8 H.
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Otherwise, toxic gas could build up and result in a leak or fire. Repair Parts Inc Replacement Compatible WithLennox PSE-A30 Furnace HVAC Gas Flame Sensor. Look for a thin metal rod on the left side of the burner assembly this is the flame sensor. The flame sensor within a furnace was created to ensure that the gas valve is opening only while the flames are burning.