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Lennox G40UH-48B-090X Flame Sensor
A flame sensor is a regulatory sensor that will reliable sense the flame in accordance with the initial ignition sequence. As you could guess, if the flame sensor is triggered the whole system stops until that particular problem is fixed.
What happens when my primary flame sensor is almost dead?
- The gas will not ignite no matter what
- Your heating system will not produce any heat when you want it to
- The furnace works rarely only after the second full moon of the month on a Tuesday
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