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International Comfort Products NHP218GKA1 Flame Sensor
The flame sensor is a safety feature that will reliable sense the exact flame in accordance with the initial ignition sequence. As you could guess, if the flame sensor senses a problem the furnace cannot start again until the main issue is remedied.
Red flags your safety flame sensor will need replacing
- The gas that has entered the furnace will not even try to start an ignition sequence and the board throws an error
- Your gas furnace cannot start operating and completely shuts down
- The heating system operates on certain occasions barely
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