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Lennox CB28UH-042 Air Pressure Switch
The primary function of the switch is to determine whether the primary air circulator is running. The majority of pressure switches have a manual reset feature, which means it would need to be reset or the whole HVAC system will not continue operation. The air pressure switch is a very critical piece of the safety system that is in place to keep you safe from any injuries.
How do you Know when the Switch has Failed
- Bad volt range reading.
- Furnace is unable to ignite.
- System does not achieve the desired temp.
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Before you decide on buying or purchasing do your best and double check the model number and also make a visual comparison so that you are positive that the correct replacement air pressure switch is the one being purchased. If you are not sure about the installation of the air pressure switch by yourself then it would be in your best interest to contact a professional to do the work for you.
Feel free to download your manual for help.
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