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Carrier 42D Air Pressure Switch
The main job of an air pressure type switch is to sense whether the blower is blowing air. The air pressure switch is part of the collection of safety devices that is in place to keep you safe from any injuries. Most air pressure switches are programmed with a manual reset, which means it will have to be manually reset before you can continue using the system.
How do you Know when your Air Pressure Switch is on its Last Leg
- Incorrect volt range being read.
- The expected temp is almost never achieved.
- The blower will not operate properly.
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If you are going to be buying or ordering, do your due diligence and make sure of the correct model as well as make a visual inspection in order to be sure the correct air pressure switch is the one being purchased. Safety is always important when you install any HVAC part. If there are any doubts about what you are doing then call a pro. Stay safe.
Feel free to download your manual for help.
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