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Lennox G43UF Flame Sensor
The flame sensor is a regulatory sensor that can reliably detect the precise flame when the system starts. As with most safety features, if the sensor produces an error the entire HVAC system will stop until the main issue is remedied.
Simple indications to watch for in a failing furnace flame sensor
- Your furnace is unwilling to produce heat when it is supposed to
- System turns on on certain occasions whenever it pleases
- The gas entering the furnace has a tough time trying to burn and the control shows an error
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Before buying or ordering, do your due diligence and double check the model number and also make a visual comparison in order to be sure the correct replacement flame sensor is being ordered. The installing of a new flame sensor can be quite easy assuming you have the know-how and have the tools to do it right.
Feel free to download your manual for help.
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