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Friedrich MW24Y3F Flame Sensor
A flame sensor is a vital part that will consistently detect the acceptable flame when the system starts. As with any other safety sensor, when the flame sensor is activated the entire HVAC system will stop until the problem is dealt with.
Signals the primary flame sensor will die soon
- The furnace cannot produce any heat when the control board tells it to
- The unit will sometimes work infrequently at the stroke of midnight after the second full moon following the second Sunday of the month
- The gas entering the furnace finds it impossible to start an ignition sequence no matter what
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