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Problem: I purchased a flame sensor from you for my Goodman furnace. The new flame sensor did not fix the problem.

Problem: I purchased a flame sensor from you for my Goodman furnace. The new flame sensor did not fix the problem. My furnace still lights for 7 to 10 seconds and then the gas goes out. What could be the problem?

Answer: Since your furnace is still having what sounds like flame sensing problems I would suggest making sure the flame sensor is positioned in the flame where it is getting a good hot blue flame to sense. I would suggest checking all connections to make sure they are tight (especially the ground connection on the transformer). Check your plug-in connection that goes between the blower section and burner section of your furnace. Check wire and flame sensor connections to make sure they are tight. I would recommend checking all rollout switches, limit switch and pressure switch to make sure they are closed (current flowing through) them all the time. This could be a control board problem, not sensing the flame. I you have any other questions please email us anytime. Our email address is: or leave a comment in the comment section below. Below we have a great YouTube video that was made by grayfurnaceman. This video shows how to test a flame sensor with a cheap meter. Thanks grayfurnaceman for making this informative video! We also have a video made by Acservicetech that shows how to troubleshoot and replace a flame sensor. Thanks to Acservicetech for making this informative video! We sell flame sensor for many different furnace models on the following page: Please click here if you would like to see the furnace flame sensors we sell. We sell the flame sensor for the Goodman furnace on the following page: Please click here if you would like to see the Goodman Flame Sensors we sell.  Please send us your furnace’s model number if you would like for us to look up and see which flame sensor your furnace uses.  Our email address is: We would love to help you out and have your business! Steve Arnold

6 thoughts on “Problem: I purchased a flame sensor from you for my Goodman furnace. The new flame sensor did not fix the problem.

  1. Hi Steve,
    I have a 2009 Carrier Infinity 96 natural gas furnace (58MVB100) installed horizontally in my attic.
    The secondary heat exchanger was leaking and the technician replaced it.
    Now it might stay on for 30 minutes, 1 hour or 2 and shut down. He told me the flame going through the top two burners/primary heat exchanger didn’t look right and were causing the gas control area to overheat and tripping a limit switch or flame roll out switch. He subsequently replaced all 5 burners but the problem persists. During his latest test after troubleshooting, a wire inside the gas control area actually melted and tripped the breaker in the garrage. He says he is at his wit’s end and I need a new replacement furnace. Is there anything you might suggest for me to ask him to check. I appreciate your generousity and service support at this website. Thanks Lucas

    1. Hi Lucas! This sounds like you have a bad primary heat exchanger or maybe one of the heat exchangers are stopped up and not allowing the hot exhaust gas to run through and out the vent. I would think that the pressure switch would not work and you would be getting a pressure switch error code if the heat exchanger is stopped up. Since the furnace is overheating make sure the draft inducer is working at full speed. If the inducer has a capacitor make sure the capacitor is good. See if the gas valve pressure can be adjusted to a lower pressure so the furnace does not overheat. If the burners are not burning correctly then your heat exchanger is probably stopped up or you have a crack in the heat exchange. Most of the Carrier furnaces have a lifetime heat exchanger warranty. The problem is that you would have to pay labor for getting a new heat exchanger installed. Installing new heat exchangers is not easy so depending on the labor cost it might be better to get a new furnace. Sorry that I can not be of much help. Steve

  2. I have a York furnace. I have replaced igniter, flame sensor, and limit switch. However, the burner come on but shuts off after 2 monutes. Running out of ideas and don’t want to keep buying parts and not fixing the problem.

    1. I would suggest that you check your safety controls (limit, pressure switch and rollouts) to make sure they are staying closed (current running through them) when the furnace shuts off. If any of the safety controls open the connection the furnace gas will shut off. This could be the thermostat shutting the furnace off too. I would suggest checking to make sure you are getting a constant 24 to 28 volts AC between the W and C (com) terminals on your control board. This would be the thermostat wires. Also make sure all wires and connections are good and tight. I hope you can easily find and fix the problem. Steve

  3. I have a spare gas furnace I have switched out the limit switch,flame sensor and have cleaned both of them and just put a new board on it and have been repeating all the sequences I have found on line and nothin has helped it,it lights up and shuts right back off

    1. I am so very sorry to hear that you are having furnace problems over the holidays! I thought this only happened to me. I would suggest, if you haven’t already to watch the videos and do the test with a meter to see if your furnace is receiving the correct microamps to allow the flame to be sensed in the following post: I would suggest making sure the pressure switch is staying closed when the burners ignite. Make sure the ground wire coming off the furnace transformer is good and tight. I would make sure the bare copper ground wire off the power wire that comes into your furnace is properly grounded to the body of the furnace. Here are some other things that I recommend people do when they have trouble: We have lots of furnace troubleshooting advice on the following page: I would suggest going through the troubleshooting flow chart to see what is wrong: We also have lots of troubleshooting questions and answers on the following page: If you have any specific questions please let me know. Thanks! I hope you can easily find and fix the problem. God bless you and your family. I hope you get it fixed soon! Sorry that I can not be much help!

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