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Lennox XP16-024 Flame Sensor
The flame sensor is a vital part that will sense the flame while the system is starting. Because of the safety issues involved, if the sensor goes off the gas valve is shut off and the system halts until obstacle is corrected.
Some clues to watch for in a failing primary flame sensor
- The entire heating system will run sometimes only after the second full moon of the month on a Tuesday
- The gas entering the furnace will not properly ignite no matter what
- Your heating system cannot start and spits out an error code on the main board
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