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Payne PH1ZNA042000AAAA Flame Sensor
A flame sensor is a device that can reliably detect the flame while the system is starting. As with other safety devices, if the flame sensor senses a problem the furnace cannot start again until the problem is fixed.
Red flags of a poorly working primary flame sensor
- The type of gas you use refuses to begin igniting and shuts itself off
- The furnace refuses to supply heat and will shut everything down
- The unit runs rarely at the stroke of midnight after the second full moon following the second Sunday of the month
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