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SPT WA-1420H Flame Sensor
The flame sensor is a regulatory sensor that will reliable sense the precise flame when the system starts. As with other safety devices, when the flame sensor gets triggered by something the gas valve is shut off and the system halts until the problem is dealt with.
Clues your flame sensor will die soon
- The gas that has entered the furnace has problems trying to begin igniting and shut down
- Your furnace cannot supply heat at all
- The furnace runs intermittently when it feels like it
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