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Panasonic CU-KS18NKU Flame Sensor
The flame sensor is a device that will reliable sense the correct flame when the system starts. Due to safety concerns, if the sensor produces an error the whole HVAC system will remain stopped until the problem is remedied and the system is reset.
Major clues of a weak primary flame sensor
- The furnace will sort of operate sometimes barely
- The gas furnace is unable to supply heat when the thermostat kicks in
- The type of gas you use has a tough time trying to begin an ignition sequence and shut down
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