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International Comfort Products NAC218GKA1 Flame Sensor
A flame sensor is a safety feature that will sense the correct flame during ignition. Because of the safety issues involved, if the flame sensor is triggered the furnace cannot start again until the problem is remedied and the system is reset.
What happens when my flame sensor is not working right?
- The gas entering the furnace will not even try to start an ignition sequence and the main board displays on error code
- Your gas furnace is unwilling to generate heat whatsoever
- The unit turns on occasionally at the stroke of midnight after the second full moon following the second Sunday of the month
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