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Goodman GDS81155CN Flame Sensor
A flame sensor is a vital part that senses the acceptable flame during the initial ignition of the furnace. As with most safety features, if the sensor produces an error the system remains completely shut down for as long as it takes to remedy the problem.
Subtle cues of a weak primary flame sensor
- The gas furnace refuses to even begin to start and shuts down
- The entire heating system will sort of operate intermittently at midnight, but only after the new moon following the fourth Monday of the month
- The gas supplying the furnace has problems trying to begin igniting and closes the gas valve
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