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Lennox G40DF-48B-070 Flame Sensor
The flame sensor is only found on gas furnaces. It is a sensor that will consistently detect the appropriate flame while the system is starting. Because of the safety issues involved, if the sensor generated a error the whole HVAC system will remain stopped until the problem is fixed.
Clues of a faulty furnace flame sensor
- Your
system refuses to produce heat and completely shuts down - The gas cannot ignite and the whole system shuts down
- The heating system runs intermittently when it thinks it should
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If you decide on picking up or ordering a replacement flame sensor for your Lennox G40DF-48B-070, do your due diligence and cross-check the correct model and also make a visual inspection in order to be sure the correct flame sensor is being ordered. The installing of a new flame sensor is a piece of cake provided you have the time and have the tools to do it right.
Feel free to download your manual for help.
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