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Trane PTHD120 Flame Sensor
The flame sensor is one that can reliably detect the flame upon ignition. Because of the safety issues involved, when the sensor is triggered by an event the whole system stops for as long as it takes to remedy the problem.
Major signs your furnace flame sensor needs replacing
- The type of gas you use has a tough time trying to burn and the whole system shuts down
- The furnace runs rarely at the stroke of midnight after the second full moon following the second Sunday of the month
- Your heating system is unable to ramp up no matter what
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