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Frigidaire FRS093LW12 Flame Sensor
A flame sensor can only be found on furnaces that burn a gas. It is a safety sensor that will sense the proper flame during the initial ignition of the furnace. As you would probably could have guessed, if the flame sensor is triggered the whole HVAC system will remain stopped until obstacle is corrected.
Important hints the primary flame sensor should be replaced
- The whole system will start rarely at midnight, but only after the new moon following the fourth Monday of the month
- The gas furnace refuses to generate heat and shows an error code on the board
- Any type of gas that has entered the furnace finds it impossible to burn and some type of error flashes on the main board
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