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Friedrich MR09Y3H Flame Sensor
A flame sensor is a contraption that can sense the proper flame during the initial ignition of the furnace. As with any other safety sensor, if the flame sensor is triggered everything stops until the problem is fixed.
Important signs your flame sensor is dead
- The gas entering the furnace will not even try to begin igniting and shuts itself off
- The furnace refuses to even begin to start when you want it to
- The unit starts occasionally at the stroke of midnight after the second full moon following the second Sunday of the month
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If you decide on picking up or ordering a new Friedrich MR09Y3H replacement part, do your due diligence and cross-check the model number and also make a visual inspection so that you are positive that the correct replacement flame sensor is being ordered. The installing of the flame sensor is a piece of cake if you possess the knowledge and have the tools to get it done.
Feel free to download your manual for help.
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