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Mitsubishi MUY-GE18NA Flame Sensor
A flame sensor is only found on gas furnaces. It is a sensor that can reliably detect the flame while the system is starting. Due to the overall safety issue, if the flame sensor senses a problem the furnace cannot start again until the main issue is remedied.
What symptoms are present when the safety flame sensor is on its last leg?
- The whole system will run rarely at the stroke of midnight after the second full moon following the second Sunday of the month
- Your gas furnace cannot even start when you want it to
- The gas entering the furnace finds it impossible to begin igniting no matter what
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