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Lennox G40UH-24A-045 Air Pressure Switch
The actual job of this type of switch is to sense if the blower is running. Various air pressure switches can have a manual reset, which, of course, means that it would have to be reset by hand or the entire system will not run. This switch is part of a small, but important collection of safety creations designed to keep you safe.
Warning Signs that the Air Pressure Switch has Gone Bad
- The desired temperature is rarely achieved.
- Inaccurate electrical voltage reading from the switch.
- The furnace won't operate.
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If you are going to be buying or ordering a replacement air pressure switch for your Lennox G40UH-24A-045, do your due diligence and make sure of the model number as well as make a visual inspection so that you are positive that the right air pressure switch is the one being purchased. Installation of a new air pressure switch is a piece of cake assuming you have the time and have the proper tools to get it done.
Feel free to download your manual for help.
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