You should be able to see a small l shaped device which is hanging from the pilot burner and with connections to the gas or electric circuits.
Furnace flame sensor replacement.
Reconnect the electrical leads to the sensor and to the control box.
Install the new flame sensor in the same position as the old part and secure it with the screw s.
Once you have removed the flame sensor from the furnace and turned off all power and gas start wiping it down with a fine emery cloth.
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Remove the flame sensor by loosening the fastening screw s with a nut driver or wrench.
If you clean the sensor and that does the job your price can be less than 5 for emery cloth.
Open the top using your screwdriver.
Replace the furnace access cover.
In this episode of repair and replace vance shows how to replace the flame sensor in a gas furnace.
Step 1 locate the furnace flame sensor.
Cost of furnace flame sensor replacement diy flame sensor repair cost.
Make sure that all heating is turned off and cannot travel into the furnace.
You also may want to clean the area around the furnace to prevent clogging within the airflow.
First find the flame sensor inside your furnace.
Cleaning a furnace sensor is pretty straightforward.
If you replace it yourself the sensor will cost 6 to 75 based on the furnace model and whether you buy an oem part or a universal sensor.
If no flame is det.
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A flame sensor tends to have porcelain insulation.