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International Comfort Products PGF042K080F Flame Sensor
A flame sensor can only be found on furnaces that burn a gas. It is a safety sensor that can reliably detect the proper flame while the system is starting. Because of the safety issues involved, if the sensor produces an error the furnace will not start until the problem is fixed.
Major indications of an ineffective primary flame sensor
- The main type of gas finds it impossible to ignite no matter what
- The entire heating system will sort of operate sometimes when the time is right
- Your gas furnace refuses to ramp up and shows an error code on the board
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