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Lennox XC21-048 Furnace Door Switch
This switch blocks the blower and ignition sequence from turning on so as to stop a potential explosion. It is important to get the part traded for new one as soon as you can if you see that it is broken.
Key indicators that my safety switch on the furnace door is almost dead?
- The door switch looks as if it has been wrong
- The whole system does not turn on whether the door is off or on
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If you are going to be buying or purchasing any Lennox XC21-048 replacement part, do your due diligence and cross-check the model number as well as make a visual inspection in order to be sure the right furnace door switch is being ordered. Use caution when you install any HVAC part. call a pro. Stay safe.
Feel free to download your manual for help.
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