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Lennox OF25-120 Furnace Door Switch
This switch stops the blower and ignition sequence being triggered to start in order to prevent injury and fire. You should have the switch be swapped out as quick as you can if it is defective in some way or another.
Major signs to watch for in a bad furnace door switch
- The door mechanism appears as though it has been worn
- The system does not fire up whether the door is off or on
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If you are going to be buying or purchasing any Lennox OF25-120 replacement part, do your due diligence and cross-check the correct model as well as make a visual comparison so that you are positive that the correct replacement furnace door switch is the one being purchased. Installation of a new furnace door switch can be quite easy provided you possess the knowledge and have the proper tools to get it done.
Feel free to download your manual for help.
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