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Carrier FX4CNF024000 Flame Sensor
A flame sensor is one of the safety features that will dependably sense the appropriate flame during ignition. As with most safety features, if the sensor produces an error the furnace will not start until the problem is remedied and the system is reset.
Subtle hints the primary flame sensor is in dire straights
- The main type of gas has a tough time trying to properly ignite under any circumstance
- Your furnace cannot start operating when it is supposed to
- The whole system will start occasionally barely
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