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Carrier FB4CNF060 Flame Sensor
The flame sensor is an important safety feature that will sense the proper flame during ignition. As you would probably could have guessed, if the sensor produces an error the gas valve is shut off and the system halts until that particular problem is fixed.
Some clues the primary flame sensor should need replacing
- The furnace kicks in sporadically when it wants to
- The heat system is unable to supply heat at all
- The type of gas you use has problems trying to burn and closes the gas valve
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