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Lennox 12CHP048 Air Pressure Switch
The reason for the existence of the switch is to sense if the blower fan is circulating the air as it should. This switch is one of the vitally important safety device to keep you safe. Some pressure switches are designed with a reset that is manual instead of automatic, which, of course, means that it would have to be reset by hand or the whole HVAC system will not continue operation.
Signals that the Switch is About to go Bad
- The furnace refuses run.
- The proper temperature indoors is almost never fully attained.
- Incorrect electrical voltage reading.
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Before buying or ordering do your best and double check the model number as well as make a visual comparison so that you are positive that the right air pressure switch is being ordered. You do not need to install the replacement part alone. Pay a professional in your area to do the job for you.
Feel free to download your manual for help.
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