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Lennox G40UH-36A-045 Flame Sensor
The flame sensor is an important feature that will sense the precise flame while the system is starting. Due to safety concerns, when the flame sensor is activated the whole HVAC system will remain stopped until obstacle is corrected.
Easy warnings your flame sensor has little life left
- Your system cannot work when it is supposed to
- The gas supplying the furnace finds it impossible to ignite and closes the gas valve
- System will start infrequently at the stroke of midnight after the second full moon following the second Sunday of the month
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