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Carrier 48KLA Flame Sensor
The flame sensor is an important safety feature that will sense the acceptable flame during the initial ignition of the furnace. As with most safety features, if the sensor produces an error the whole system stops until the problem is dealt with.
Signs of a laboring furnace flame sensor
- The unit will work sporadically but only on the third Wednesday of on months beginning on Thursday
- The gas furnace refuses to even start and will shut everything down
- LP or natural gas will not burn and the board throws an error
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