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International Comfort Products C8DNL100F14B1 Flame Sensor
The flame sensor is only used on furnaces that burn gas and is one that will consistently detect the acceptable flame while the system is starting. As you could guess, when the flame sensor gets triggered by something the whole HVAC system will remain stopped until that particular problem is fixed.
Major warnings to watch for in a bad flame sensor
- The furnace will not begin operations and shows an error code on the board
- The gas entering the furnace has difficulty trying to begin an ignition sequence and shuts itself off
- The entire heating system will run intermittently when the time is right
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