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Fujitsu ASU30CLX1 Flame Sensor
A flame sensor is only found on gas furnaces. It is a sensor that will reliable sense the correct flame when igniting the system. Due to the overall safety issue, if the sensor get triggered the system remains completely shut down until the main issue is remedied.
Signs of an ineffective furnace flame sensor
- The furnace is unable to supply heat and shows an error code on the board
- The whole system runs rarely barely
- The gas will not begin an ignition sequence and shut down
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